d0p1/ack
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity
ack/mach/powerpc/ncg/mach.c

313 lines
6.3 KiB
C
Raw Normal View History

Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
/*
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
* See the copyright notice in the ACK home directory, in the file "Copyright".
*
*/
/*
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
* machine dependent back end routines for the PowerPC
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
*/
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
#include <limits.h>
Add a few more error checks and adjustments to reglap. In util/ncgg, add two more errors for tables using reglap: - "Two sizes of reg_float can't be same size" - "Missing reg_float of size %d to contain %s" In mach/proto/ncg, rename macro isregvar_size() to PICK_REGVAR(), so the macro doesn't look like a function. This macro sometimes doesn't evaluate its second argument. In mach/powerpc/ncg/mach.c, change type of lfs_set to uint32_t, and change the left shifts from 1U<<regno to (uint32_t)1<<regno, because 1U would be too small for machines with 16-bit int.
2017-10-19 02:00:12 +00:00
#include <stdint.h>
Get `ack -mosxppc -g` to partly work with gdb. Copy and adapt code from mach/{i386,m68020}/ncg/mach.c to pass the debugging stabs from EM to assembly. The next tools (as, led, cv) already know how to put the stabs in the Mach-o executable. Modify the function prolog/prologue so gdb uses fp, not sp, for N_LSYM and N_PSYM stabs. Simplify prolog() by reducing differences between stabs and no stabs, and zero and nonzero framesize. For files without stabs, the new prolog has the same number of instructions and memory accesses as the old prolog, and to run at about the same speed on my PowerPC Mac. This is enough to see some info for global and local variables in gdb for Mac OS X. I still can't get a backtrace; gdb gets confused because EM and ncg don't link 0(sp) to the previous stack frame. I don't expect `ack -mlinuxppc -g` to work with gdb for Linux, because we prepend underscores to the symbol table, which is correct for Mach-o but wrong for ELF.
2018-01-27 01:08:03 +00:00
#include <stb.h>
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
Get `ack -mosxppc -g` to partly work with gdb. Copy and adapt code from mach/{i386,m68020}/ncg/mach.c to pass the debugging stabs from EM to assembly. The next tools (as, led, cv) already know how to put the stabs in the Mach-o executable. Modify the function prolog/prologue so gdb uses fp, not sp, for N_LSYM and N_PSYM stabs. Simplify prolog() by reducing differences between stabs and no stabs, and zero and nonzero framesize. For files without stabs, the new prolog has the same number of instructions and memory accesses as the old prolog, and to run at about the same speed on my PowerPC Mac. This is enough to see some info for global and local variables in gdb for Mac OS X. I still can't get a backtrace; gdb gets confused because EM and ncg don't link 0(sp) to the previous stack frame. I don't expect `ack -mlinuxppc -g` to work with gdb for Linux, because we prepend underscores to the symbol table, which is correct for Mach-o but wrong for ELF.
2018-01-27 01:08:03 +00:00
static int writing_stabs = 0;
#ifdef REGVARS
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
static long framesize;
Get `ack -mosxppc -g` to partly work with gdb. Copy and adapt code from mach/{i386,m68020}/ncg/mach.c to pass the debugging stabs from EM to assembly. The next tools (as, led, cv) already know how to put the stabs in the Mach-o executable. Modify the function prolog/prologue so gdb uses fp, not sp, for N_LSYM and N_PSYM stabs. Simplify prolog() by reducing differences between stabs and no stabs, and zero and nonzero framesize. For files without stabs, the new prolog has the same number of instructions and memory accesses as the old prolog, and to run at about the same speed on my PowerPC Mac. This is enough to see some info for global and local variables in gdb for Mac OS X. I still can't get a backtrace; gdb gets confused because EM and ncg don't link 0(sp) to the previous stack frame. I don't expect `ack -mlinuxppc -g` to work with gdb for Linux, because we prepend underscores to the symbol table, which is correct for Mach-o but wrong for ELF.
2018-01-27 01:08:03 +00:00
#endif
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
Declare machine-dependent functions in mach/proto/ncg This breaks all machines because the declared return type void disagrees with the implicit return type int (when I compile mach.c with clang). Unbreak i386, i80, i86, m68020, powerpc, vc4 by adding the return types to mach.c. We don't build any other machines; they are broken since commit a46ee91 (May 19, 2013) declared void prolog() and commit fd91851 (Nov 10, 2016) declared void mes(), with both declarations in mach/proto/ncg/fillem.c. Also fix mach/vc4/ncg/mach.c where type full is long, so fprintf() must use "%ld" not "%d" to print full nlocals.
2017-11-13 19:23:44 +00:00
void
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
con_part(int sz, word w)
{
while (part_size % sz)
part_size++;
if (part_size == TEM_WSIZE)
part_flush();
if (sz == 1) {
w &= 0xFF;
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
w <<= 8 * (3 - part_size);
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
part_word |= w;
} else if (sz == 2) {
w &= 0xFFFF;
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
w <<= 8 * (2 - part_size);
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
part_word |= w;
} else {
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
assert(sz == 4);
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
part_word = w;
}
part_size += sz;
}
Declare machine-dependent functions in mach/proto/ncg This breaks all machines because the declared return type void disagrees with the implicit return type int (when I compile mach.c with clang). Unbreak i386, i80, i86, m68020, powerpc, vc4 by adding the return types to mach.c. We don't build any other machines; they are broken since commit a46ee91 (May 19, 2013) declared void prolog() and commit fd91851 (Nov 10, 2016) declared void mes(), with both declarations in mach/proto/ncg/fillem.c. Also fix mach/vc4/ncg/mach.c where type full is long, so fprintf() must use "%ld" not "%d" to print full nlocals.
2017-11-13 19:23:44 +00:00
void
Teach some ncg machines to use .data8 This turns EM `con 5000000000I8` into assembly `.data8 5000000000` for machines i386, i80, i86, m68020, powerpc, vc4. These are the only ncg machines in our build. i80 and i86 get con_mult(sz) for sz == 4 and sz == 8. The other machines only get sz == 8, because they have 4-byte words, and ncg only calls con_mult(sz) when sz is greater than the word size. The tab "\t" after .data4 or .data8 is like the tabs in the con_*() macros of mach/*/ncg/mach.h. i86 now uses .data4, like i80. Also, i86 and i386 now use the numeric string without converting it to an integer and back to a string.
2019-08-13 19:37:05 +00:00
con_mult(word sz) {
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
Teach some ncg machines to use .data8 This turns EM `con 5000000000I8` into assembly `.data8 5000000000` for machines i386, i80, i86, m68020, powerpc, vc4. These are the only ncg machines in our build. i80 and i86 get con_mult(sz) for sz == 4 and sz == 8. The other machines only get sz == 8, because they have 4-byte words, and ncg only calls con_mult(sz) when sz is greater than the word size. The tab "\t" after .data4 or .data8 is like the tabs in the con_*() macros of mach/*/ncg/mach.h. i86 now uses .data4, like i80. Also, i86 and i386 now use the numeric string without converting it to an integer and back to a string.
2019-08-13 19:37:05 +00:00
if (sz != 8)
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
fatal("bad icon/ucon size");
Teach some ncg machines to use .data8 This turns EM `con 5000000000I8` into assembly `.data8 5000000000` for machines i386, i80, i86, m68020, powerpc, vc4. These are the only ncg machines in our build. i80 and i86 get con_mult(sz) for sz == 4 and sz == 8. The other machines only get sz == 8, because they have 4-byte words, and ncg only calls con_mult(sz) when sz is greater than the word size. The tab "\t" after .data4 or .data8 is like the tabs in the con_*() macros of mach/*/ncg/mach.h. i86 now uses .data4, like i80. Also, i86 and i386 now use the numeric string without converting it to an integer and back to a string.
2019-08-13 19:37:05 +00:00
fprintf(codefile,".data8\t%s\n", str);
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
}
#define CODE_GENERATOR
#define IEEEFLOAT
#define FL_MSL_AT_LOW_ADDRESS 1
#define FL_MSW_AT_LOW_ADDRESS 1
#define FL_MSB_AT_LOW_ADDRESS 1
#include <con_float>
Add enough return types to the K&R C that the ACK builds (on Linux) using clang now.
2016-11-10 21:04:18 +00:00
void
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
prolog(full nlocals)
{
Get `ack -mosxppc -g` to partly work with gdb. Copy and adapt code from mach/{i386,m68020}/ncg/mach.c to pass the debugging stabs from EM to assembly. The next tools (as, led, cv) already know how to put the stabs in the Mach-o executable. Modify the function prolog/prologue so gdb uses fp, not sp, for N_LSYM and N_PSYM stabs. Simplify prolog() by reducing differences between stabs and no stabs, and zero and nonzero framesize. For files without stabs, the new prolog has the same number of instructions and memory accesses as the old prolog, and to run at about the same speed on my PowerPC Mac. This is enough to see some info for global and local variables in gdb for Mac OS X. I still can't get a backtrace; gdb gets confused because EM and ncg don't link 0(sp) to the previous stack frame. I don't expect `ack -mlinuxppc -g` to work with gdb for Linux, because we prepend underscores to the symbol table, which is correct for Mach-o but wrong for ELF.
2018-01-27 01:08:03 +00:00
/*
* For N_LSYM and N_PSYM stabs, we want gdb to use fp, not sp.
* The trick is to use "stwu sp, _(sp)" then "addi fp, sp, 0"
* before we save lr with "stw r0, _(sp)".
*
* Tried with Apple's gdb-696. Refer to
* - gdb-696/src/gdb/rs6000-tdep.c, skip_prologue(), line 1101
* - gdb-696/src/gdb/macosx/ppc-macosx-frameinfo.c,
* ppc_parse_instructions(), line 717
* https://opensource.apple.com/release/developer-tools-25.html
*/
fprintf(codefile, "mfspr r0, lr\n");
if (writing_stabs) {
fprintf(codefile, "stwu sp, -8(sp)\n"); /* for gdb */
fprintf(codefile, "stw fp, 0(sp)\n");
} else
fprintf(codefile, "stwu fp, -8(sp)\n");
fprintf(codefile, "addi fp, sp, 0\n"); /* for gdb */
fprintf(codefile, "stw r0, 4(sp)\n");
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
#ifdef REGVARS
Get `ack -mosxppc -g` to partly work with gdb. Copy and adapt code from mach/{i386,m68020}/ncg/mach.c to pass the debugging stabs from EM to assembly. The next tools (as, led, cv) already know how to put the stabs in the Mach-o executable. Modify the function prolog/prologue so gdb uses fp, not sp, for N_LSYM and N_PSYM stabs. Simplify prolog() by reducing differences between stabs and no stabs, and zero and nonzero framesize. For files without stabs, the new prolog has the same number of instructions and memory accesses as the old prolog, and to run at about the same speed on my PowerPC Mac. This is enough to see some info for global and local variables in gdb for Mac OS X. I still can't get a backtrace; gdb gets confused because EM and ncg don't link 0(sp) to the previous stack frame. I don't expect `ack -mlinuxppc -g` to work with gdb for Linux, because we prepend underscores to the symbol table, which is correct for Mach-o but wrong for ELF.
2018-01-27 01:08:03 +00:00
framesize = nlocals;
/* regsave() increases framesize; f_regsave() adjusts sp. */
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
#else
Get `ack -mosxppc -g` to partly work with gdb. Copy and adapt code from mach/{i386,m68020}/ncg/mach.c to pass the debugging stabs from EM to assembly. The next tools (as, led, cv) already know how to put the stabs in the Mach-o executable. Modify the function prolog/prologue so gdb uses fp, not sp, for N_LSYM and N_PSYM stabs. Simplify prolog() by reducing differences between stabs and no stabs, and zero and nonzero framesize. For files without stabs, the new prolog has the same number of instructions and memory accesses as the old prolog, and to run at about the same speed on my PowerPC Mac. This is enough to see some info for global and local variables in gdb for Mac OS X. I still can't get a backtrace; gdb gets confused because EM and ncg don't link 0(sp) to the previous stack frame. I don't expect `ack -mlinuxppc -g` to work with gdb for Linux, because we prepend underscores to the symbol table, which is correct for Mach-o but wrong for ELF.
2018-01-27 01:08:03 +00:00
if (nlocals)
fprintf(codefile, "addi sp, sp, %ld\n", -nlocals);
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
#endif
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
}
Add enough return types to the K&R C that the ACK builds (on Linux) using clang now.
2016-11-10 21:04:18 +00:00
void
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
mes(word type)
{
Get `ack -mosxppc -g` to partly work with gdb. Copy and adapt code from mach/{i386,m68020}/ncg/mach.c to pass the debugging stabs from EM to assembly. The next tools (as, led, cv) already know how to put the stabs in the Mach-o executable. Modify the function prolog/prologue so gdb uses fp, not sp, for N_LSYM and N_PSYM stabs. Simplify prolog() by reducing differences between stabs and no stabs, and zero and nonzero framesize. For files without stabs, the new prolog has the same number of instructions and memory accesses as the old prolog, and to run at about the same speed on my PowerPC Mac. This is enough to see some info for global and local variables in gdb for Mac OS X. I still can't get a backtrace; gdb gets confused because EM and ncg don't link 0(sp) to the previous stack frame. I don't expect `ack -mlinuxppc -g` to work with gdb for Linux, because we prepend underscores to the symbol table, which is correct for Mach-o but wrong for ELF.
2018-01-27 01:08:03 +00:00
int argt, a1, a2 ;
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
switch ( (int)type ) {
case ms_ext :
for (;;) {
switch ( argt=getarg(
ptyp(sp_cend)|ptyp(sp_pnam)|sym_ptyp) ) {
case sp_cend :
return ;
default:
strarg(argt) ;
fprintf(codefile,".define %s\n",argstr) ;
break ;
}
}
Get `ack -mosxppc -g` to partly work with gdb. Copy and adapt code from mach/{i386,m68020}/ncg/mach.c to pass the debugging stabs from EM to assembly. The next tools (as, led, cv) already know how to put the stabs in the Mach-o executable. Modify the function prolog/prologue so gdb uses fp, not sp, for N_LSYM and N_PSYM stabs. Simplify prolog() by reducing differences between stabs and no stabs, and zero and nonzero framesize. For files without stabs, the new prolog has the same number of instructions and memory accesses as the old prolog, and to run at about the same speed on my PowerPC Mac. This is enough to see some info for global and local variables in gdb for Mac OS X. I still can't get a backtrace; gdb gets confused because EM and ncg don't link 0(sp) to the previous stack frame. I don't expect `ack -mlinuxppc -g` to work with gdb for Linux, because we prepend underscores to the symbol table, which is correct for Mach-o but wrong for ELF.
2018-01-27 01:08:03 +00:00
case ms_stb:
argt = getarg(str_ptyp | cst_ptyp);
if (argt == sp_cstx)
fputs(".symb \"\", ", codefile);
else {
fprintf(codefile, ".symb \"%s\", ", str);
argt = getarg(cst_ptyp);
}
a1 = argval;
argt = getarg(cst_ptyp);
a2 = argval;
argt = getarg(cst_ptyp|nof_ptyp|sof_ptyp|ilb_ptyp|pro_ptyp);
if (a1 == N_PSYM) {
/* Change offset from AB into offset from
the frame pointer.
*/
argval += 8;
}
fprintf(codefile, "%s, 0x%x, %d\n", strarg(argt), a1, a2);
argt = getarg(end_ptyp);
break;
case ms_std:
writing_stabs = 1; /* set by first "mes 13,...,100,0" */
argt = getarg(str_ptyp | cst_ptyp);
if (argt == sp_cstx)
str[0] = '\0';
else {
argt = getarg(cst_ptyp);
}
swtxt();
fprintf(codefile, ".symd \"%s\", 0x%x,", str, (int) argval);
argt = getarg(cst_ptyp);
fprintf(codefile, "%d\n", (int) argval);
argt = getarg(end_ptyp);
break;
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
default :
while ( getarg(any_ptyp) != sp_cend ) ;
break ;
}
}
char *segname[] = {
".sect .text",
".sect .data",
".sect .rom",
".sect .bss"
};
#ifdef REGVARS
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
static long savedf[32];
static long savedi[32];
static int savedtop;
Add a few more error checks and adjustments to reglap. In util/ncgg, add two more errors for tables using reglap: - "Two sizes of reg_float can't be same size" - "Missing reg_float of size %d to contain %s" In mach/proto/ncg, rename macro isregvar_size() to PICK_REGVAR(), so the macro doesn't look like a function. This macro sometimes doesn't evaluate its second argument. In mach/powerpc/ncg/mach.c, change type of lfs_set to uint32_t, and change the left shifts from 1U<<regno to (uint32_t)1<<regno, because 1U would be too small for machines with 16-bit int.
2017-10-19 02:00:12 +00:00
static uint32_t lfs_set;
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
/* Calculate the register score of a local variable. */
int
regscore(long offset, int size, int type, int frequency, int totype)
{
int score;
switch (type) {
case reg_float:
For PowerPC, never put a reg_float value in a reg_any. With this type check, I can change the size checks into assertions.
2017-02-17 01:30:17 +00:00
/* Don't put reg_float in reg_any. */
if (totype != reg_float)
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
return -1;
Add reglap to ncg. Add 4-byte reg_float to PowerPC ncg. The new feature "reglap" allows two sizes of floating-point register variables (reg_float), if each register overlaps a single register of the other size. PowerPC ncg uses reglap to define 4-byte instances of f14 to f31 that overlap the 8-byte instances. When ncgg sees the definition of fs14("f14")=f14, it removes the 8-byte f14 from its rvnumbers array, and adds the 4-byte fs14 in its place. Later, when ncg puts a variable in fs14, if it is an 8-byte variable, then ncg switches to the 8-byte f14. The code has /* reglap */ comments in util/ncgg or #ifdef REGLAP in mach/proto/ncg reglap became necessary because my commit a20b87c caused PowerPC ego to allocate reg_float in both 4-byte and 8-byte sizes.
2017-10-14 16:40:04 +00:00
assert(size == 4 || size == 8);
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
break;
default:
For PowerPC, never put a reg_float value in a reg_any. With this type check, I can change the size checks into assertions.
2017-02-17 01:30:17 +00:00
assert(size == 4);
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
break;
}
/* Clamp to avoid overflowing 16-bit int score. */
if (frequency > 8000)
frequency = 8000;
/*
* Each occurence of a regvar saves about 4 bytes by not
* emitting a load or store instruction. The overhead is
* about 8 bytes to save and restore the register, plus
* 4 bytes if the local is a parameter.
*/
score = 4 * frequency - 8 - ((offset >= 0) ? 4 : 0);
For PowerPC, never put a reg_float value in a reg_any. With this type check, I can change the size checks into assertions.
2017-02-17 01:30:17 +00:00
#if 0
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
fprintf(codefile, "! local %ld score %d\n", offset, score);
For PowerPC, never put a reg_float value in a reg_any. With this type check, I can change the size checks into assertions.
2017-02-17 01:30:17 +00:00
#endif
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
return score;
}
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
/* Initialise regvar system for one function. */
Declare machine-dependent functions in mach/proto/ncg This breaks all machines because the declared return type void disagrees with the implicit return type int (when I compile mach.c with clang). Unbreak i386, i80, i86, m68020, powerpc, vc4 by adding the return types to mach.c. We don't build any other machines; they are broken since commit a46ee91 (May 19, 2013) declared void prolog() and commit fd91851 (Nov 10, 2016) declared void mes(), with both declarations in mach/proto/ncg/fillem.c. Also fix mach/vc4/ncg/mach.c where type full is long, so fprintf() must use "%ld" not "%d" to print full nlocals.
2017-11-13 19:23:44 +00:00
void
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
i_regsave(void)
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
{
int i;
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
for (i=0; i<32; i++) {
savedf[i] = LONG_MIN;
savedi[i] = LONG_MIN;
}
/* Set top of register save area, relative to fp. */
savedtop = -framesize;
Add reglap to ncg. Add 4-byte reg_float to PowerPC ncg. The new feature "reglap" allows two sizes of floating-point register variables (reg_float), if each register overlaps a single register of the other size. PowerPC ncg uses reglap to define 4-byte instances of f14 to f31 that overlap the 8-byte instances. When ncgg sees the definition of fs14("f14")=f14, it removes the 8-byte f14 from its rvnumbers array, and adds the 4-byte fs14 in its place. Later, when ncg puts a variable in fs14, if it is an 8-byte variable, then ncg switches to the 8-byte f14. The code has /* reglap */ comments in util/ncgg or #ifdef REGLAP in mach/proto/ncg reglap became necessary because my commit a20b87c caused PowerPC ego to allocate reg_float in both 4-byte and 8-byte sizes.
2017-10-14 16:40:04 +00:00
lfs_set = 0; /* empty set */
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
}
/* Mark a register as being saved. */
Declare machine-dependent functions in mach/proto/ncg This breaks all machines because the declared return type void disagrees with the implicit return type int (when I compile mach.c with clang). Unbreak i386, i80, i86, m68020, powerpc, vc4 by adding the return types to mach.c. We don't build any other machines; they are broken since commit a46ee91 (May 19, 2013) declared void prolog() and commit fd91851 (Nov 10, 2016) declared void mes(), with both declarations in mach/proto/ncg/fillem.c. Also fix mach/vc4/ncg/mach.c where type full is long, so fprintf() must use "%ld" not "%d" to print full nlocals.
2017-11-13 19:23:44 +00:00
void
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
regsave(const char* regname, long offset, int size)
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
{
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
int regnum = atoi(regname + 1);
assert(regnum >= 0 && regnum <= 31);
switch (regname[0]) {
case 'f':
savedf[regnum] = offset;
framesize += 8;
Add reglap to ncg. Add 4-byte reg_float to PowerPC ncg. The new feature "reglap" allows two sizes of floating-point register variables (reg_float), if each register overlaps a single register of the other size. PowerPC ncg uses reglap to define 4-byte instances of f14 to f31 that overlap the 8-byte instances. When ncgg sees the definition of fs14("f14")=f14, it removes the 8-byte f14 from its rvnumbers array, and adds the 4-byte fs14 in its place. Later, when ncg puts a variable in fs14, if it is an 8-byte variable, then ncg switches to the 8-byte f14. The code has /* reglap */ comments in util/ncgg or #ifdef REGLAP in mach/proto/ncg reglap became necessary because my commit a20b87c caused PowerPC ego to allocate reg_float in both 4-byte and 8-byte sizes.
2017-10-14 16:40:04 +00:00
if (size == 4)
Add a few more error checks and adjustments to reglap. In util/ncgg, add two more errors for tables using reglap: - "Two sizes of reg_float can't be same size" - "Missing reg_float of size %d to contain %s" In mach/proto/ncg, rename macro isregvar_size() to PICK_REGVAR(), so the macro doesn't look like a function. This macro sometimes doesn't evaluate its second argument. In mach/powerpc/ncg/mach.c, change type of lfs_set to uint32_t, and change the left shifts from 1U<<regno to (uint32_t)1<<regno, because 1U would be too small for machines with 16-bit int.
2017-10-19 02:00:12 +00:00
lfs_set |= ((uint32_t)1<<regnum);
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
break;
case 'r':
savedi[regnum] = offset;
framesize += 4;
break;
}
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
}
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
static void
saveloadregs(const char* ops, const char* opm, const char *opf)
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
{
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
long offset = savedtop;
int reg;
/* Do floating-point registers. */
for (reg = 31; reg >= 0; reg--) {
if (savedf[reg] != LONG_MIN) {
offset -= 8;
Teach top to merge or delete "addi sp, sp, X". This reduces code size, because ncg emits too many "addi sp, sp, X" instructions when unstacking things. Now top lowers "addi sp, sp, X" by lifting other instructions. This sometimes creates chances to merge or delete _addi_ instructions. If no such chance is found, the _addi_ remains uselessly lowered. Edit ncg/table to remove something that top now does. Edit ncg/mach.c to remove some spaces after commas. This removes a whitespace difference between *.s and *.so files, because top removes the space.
2018-01-05 22:55:50 +00:00
fprintf(codefile, "%s f%d,%ld(fp)\n",
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
opf, reg, offset);
}
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
}
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
if (savedi[31] != LONG_MIN && savedi[30] != LONG_MIN) {
/*
* Do multiple registers from reg to r31.
*
* Using stmw or lmw reduces code size, but in some
* processors, runs slower than the equivalent pile of
* stw or lwz instructions.
*/
reg = 30;
while (reg > 0 && savedi[reg - 1] != LONG_MIN)
reg--;
offset -= (32 - reg) * 4;
Teach top to merge or delete "addi sp, sp, X". This reduces code size, because ncg emits too many "addi sp, sp, X" instructions when unstacking things. Now top lowers "addi sp, sp, X" by lifting other instructions. This sometimes creates chances to merge or delete _addi_ instructions. If no such chance is found, the _addi_ remains uselessly lowered. Edit ncg/table to remove something that top now does. Edit ncg/mach.c to remove some spaces after commas. This removes a whitespace difference between *.s and *.so files, because top removes the space.
2018-01-05 22:55:50 +00:00
fprintf(codefile, "%s r%d,%ld(fp)\n", opm, reg, offset);
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
} else
reg = 32;
/* Do single general-purpose registers. */
for (reg--; reg >= 0; reg--) {
if (savedi[reg] != LONG_MIN) {
offset -= 4;
Teach top to merge or delete "addi sp, sp, X". This reduces code size, because ncg emits too many "addi sp, sp, X" instructions when unstacking things. Now top lowers "addi sp, sp, X" by lifting other instructions. This sometimes creates chances to merge or delete _addi_ instructions. If no such chance is found, the _addi_ remains uselessly lowered. Edit ncg/table to remove something that top now does. Edit ncg/mach.c to remove some spaces after commas. This removes a whitespace difference between *.s and *.so files, because top removes the space.
2018-01-05 22:55:50 +00:00
fprintf(codefile, "%s r%d,%ld(fp)\n",
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
ops, reg, offset);
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
}
}
}
Declare machine-dependent functions in mach/proto/ncg This breaks all machines because the declared return type void disagrees with the implicit return type int (when I compile mach.c with clang). Unbreak i386, i80, i86, m68020, powerpc, vc4 by adding the return types to mach.c. We don't build any other machines; they are broken since commit a46ee91 (May 19, 2013) declared void prolog() and commit fd91851 (Nov 10, 2016) declared void mes(), with both declarations in mach/proto/ncg/fillem.c. Also fix mach/vc4/ncg/mach.c where type full is long, so fprintf() must use "%ld" not "%d" to print full nlocals.
2017-11-13 19:23:44 +00:00
void
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
f_regsave(void)
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
{
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
int reg;
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
Get `ack -mosxppc -g` to partly work with gdb. Copy and adapt code from mach/{i386,m68020}/ncg/mach.c to pass the debugging stabs from EM to assembly. The next tools (as, led, cv) already know how to put the stabs in the Mach-o executable. Modify the function prolog/prologue so gdb uses fp, not sp, for N_LSYM and N_PSYM stabs. Simplify prolog() by reducing differences between stabs and no stabs, and zero and nonzero framesize. For files without stabs, the new prolog has the same number of instructions and memory accesses as the old prolog, and to run at about the same speed on my PowerPC Mac. This is enough to see some info for global and local variables in gdb for Mac OS X. I still can't get a backtrace; gdb gets confused because EM and ncg don't link 0(sp) to the previous stack frame. I don't expect `ack -mlinuxppc -g` to work with gdb for Linux, because we prepend underscores to the symbol table, which is correct for Mach-o but wrong for ELF.
2018-01-27 01:08:03 +00:00
if (framesize)
fprintf(codefile, "addi sp, sp, %ld\n", -framesize);
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
saveloadregs("stw", "stmw", "stfd");
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
Add reglap to ncg. Add 4-byte reg_float to PowerPC ncg. The new feature "reglap" allows two sizes of floating-point register variables (reg_float), if each register overlaps a single register of the other size. PowerPC ncg uses reglap to define 4-byte instances of f14 to f31 that overlap the 8-byte instances. When ncgg sees the definition of fs14("f14")=f14, it removes the 8-byte f14 from its rvnumbers array, and adds the 4-byte fs14 in its place. Later, when ncg puts a variable in fs14, if it is an 8-byte variable, then ncg switches to the 8-byte f14. The code has /* reglap */ comments in util/ncgg or #ifdef REGLAP in mach/proto/ncg reglap became necessary because my commit a20b87c caused PowerPC ego to allocate reg_float in both 4-byte and 8-byte sizes.
2017-10-14 16:40:04 +00:00
/*
* Register variables with offset >= 0 must load an argument
* from that offset.
*/
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
for (reg = 31; reg >= 0; reg--)
if (savedf[reg] >= 0)
Add reglap to ncg. Add 4-byte reg_float to PowerPC ncg. The new feature "reglap" allows two sizes of floating-point register variables (reg_float), if each register overlaps a single register of the other size. PowerPC ncg uses reglap to define 4-byte instances of f14 to f31 that overlap the 8-byte instances. When ncgg sees the definition of fs14("f14")=f14, it removes the 8-byte f14 from its rvnumbers array, and adds the 4-byte fs14 in its place. Later, when ncg puts a variable in fs14, if it is an 8-byte variable, then ncg switches to the 8-byte f14. The code has /* reglap */ comments in util/ncgg or #ifdef REGLAP in mach/proto/ncg reglap became necessary because my commit a20b87c caused PowerPC ego to allocate reg_float in both 4-byte and 8-byte sizes.
2017-10-14 16:40:04 +00:00
fprintf(codefile, "%s f%d, %ld(fp)\n",
Add a few more error checks and adjustments to reglap. In util/ncgg, add two more errors for tables using reglap: - "Two sizes of reg_float can't be same size" - "Missing reg_float of size %d to contain %s" In mach/proto/ncg, rename macro isregvar_size() to PICK_REGVAR(), so the macro doesn't look like a function. This macro sometimes doesn't evaluate its second argument. In mach/powerpc/ncg/mach.c, change type of lfs_set to uint32_t, and change the left shifts from 1U<<regno to (uint32_t)1<<regno, because 1U would be too small for machines with 16-bit int.
2017-10-19 02:00:12 +00:00
(lfs_set & ((uint32_t)1<<reg)) ? "lfs" : "lfd",
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
reg, savedf[reg]);
for (reg = 31; reg >= 0; reg--)
if (savedi[reg] >= 0)
fprintf(codefile, "lwz r%d, %ld(fp)\n",
reg, savedi[reg]);
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
}
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
/* Restore all saved registers. */
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
Declare machine-dependent functions in mach/proto/ncg This breaks all machines because the declared return type void disagrees with the implicit return type int (when I compile mach.c with clang). Unbreak i386, i80, i86, m68020, powerpc, vc4 by adding the return types to mach.c. We don't build any other machines; they are broken since commit a46ee91 (May 19, 2013) declared void prolog() and commit fd91851 (Nov 10, 2016) declared void mes(), with both declarations in mach/proto/ncg/fillem.c. Also fix mach/vc4/ncg/mach.c where type full is long, so fprintf() must use "%ld" not "%d" to print full nlocals.
2017-11-13 19:23:44 +00:00
void
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
regreturn(void)
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
{
Add floating-point register variables to PowerPC ncg. Use f14 to f31 as register variables for 8-byte double-precison. There are no regvars for 4-byte double precision, because all regvar(reg_float) must have the same size. I expect more programs to prefer 8-byte double precision. Teach mach/powerpc/ncg/mach.c to emit stfd and lfd instructions to save and restore 8-byte regvars. Delay emitting the function prolog until f_regsave(), so we can use one addi to make stack space for both local vars and saved registers. Be more careful with types in mach.c; don't assume that int and long and full are the same. In ncg table, add f14 to f31 as register variables, and some rules to use them. Add rules to put the result of fadd, fsub, fmul, fdiv, fneg in a regvar. Without such rules, the result would go in a scratch FREG, and we would need fmr to move it to the regvar. Also add a rule for pat sdl inreg($1)==reg_float with STACK, so we can unstack the value directly into the regvar, again without a scratch FREG and fmr. Edit util/ego/descr/powerpc.descr to tell ego about the new float regvars. This might not be working right; ego usually decides against using any float regvars, so ack -O1 (not running ego) uses the regvars, but ack -O4 (running ego) doesn't use the regvars. Beware that ack -mosxppc runs ego using powerpc.descr but -mlinuxppc and -mqemuppc run ego without a config file (since 8ef7c31). I am testing powerpc.descr with a local edit to plat/linuxppc/descr to run ego with powerpc.descr there, but I did not commit my local edit.
2017-02-16 00:34:07 +00:00
saveloadregs("lwz", "lmw", "lfd");
Archival checkin (semi-working code).
2007-11-02 18:56:58 +00:00
}
#endif
Reference in a new issue Copy permalink