Added
This commit is contained in:
ceriel
parent
443aae6f7a
commit
132d7ddd95
1
mach/m68020/libdb/.distr
Normal file
1
mach/m68020/libdb/.distr
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@ -0,0 +1 @@
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machdep.s
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63
mach/m68020/libdb/machdep.s
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63
mach/m68020/libdb/machdep.s
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@ -0,0 +1,63 @@
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.define ___Get_PC, ___Set_PC, ___u_LiB
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.sect .text; .sect .rom; .sect .data
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! $Header$
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! This is the machine-dependant part of the ACK debugger support.
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! ___Get_PC takes a frame pointer (local base) argument and returns the
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! return address from this frame.
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! ___Set_PC takes a frame pointer (local base) argument plus a return
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! address and sets the return address of this frame to the
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! return address supplied.
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! ___u_LiB saves the scratch registers and then calls ___uX_LiB;
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! when ___uX_LiB returns, the scratch registers are restored.
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! ___u_LiB is the solution chosen for the MC68020 back-end.
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! Other back-ends could choose different solutions.
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! The local base of ___uX_LiB is kind of special: because of ___u_LiB,
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! the "interesting" return address of this particular stack-frame is found
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! in a different place than the one of a normal stack-frame:
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! the "interesting" return address is in fact the return address of
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! ___u_LiB. Therefore, we save the local base of ___uX_LiB in sv_a6.
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.sect .data
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sv_a6:
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.data4 0
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.sect .text
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___Get_PC:
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move.l (4,sp),d0
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beq 1f
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move.l d0,a0
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cmp.l (sv_a6),d0
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beq 2f
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move.l (4,a0),d0
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1:
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rts
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2:
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move.l (32,a0),d0
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rts
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___Set_PC:
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move.l (4,sp),d0
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beq 1f
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move.l d0,a0
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cmp.l (sv_a6),d0
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beq 2f
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move.l (8,sp),(4,a0)
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1:
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rts
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2:
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move.l (8,sp),(32,a0)
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rts
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___u_LiB:
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movem.l d0/d1/d2/a0/a1,-(sp)
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move.l (sv_a6),-(sp)
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move.l sp,d0
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sub.l #8,d0
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move.l d0,(sv_a6) ! this is the LB of __uX_LiB
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jsr (___uX_LiB)
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move.l (sp)+,(sv_a6)
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movem.l (sp)+,d0/d1/d2/a0/a1
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rts
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4
mach/proto/grind/.distr
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4
mach/proto/grind/.distr
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@ -0,0 +1,4 @@
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READ_ME
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atlin.c
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lib.e
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par_misc.e
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17
mach/proto/grind/READ_ME
Normal file
17
mach/proto/grind/READ_ME
Normal file
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@ -0,0 +1,17 @@
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$Header$
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The machine-dependant part of the ACK debugger support requires three
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routines:
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___Get_PC takes a frame pointer (local base) argument and returns the
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return address from this frame.
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___Set_PC takes a frame pointer (local base) argument plus a return
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address and sets the return address of this frame to the
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return address supplied.
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??? a third routine which is called at every line (see for
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instance mach/m68020/ncg/mach.c for an example of how to
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do this). This routine must save the scratch registers
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and then call (or jump to) ___uX_LiB. If this is a call,
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___Get_PC and ___Set_PC are complicated by the existance
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of a procedure frame that we do not want the "grind" user
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to know about. See for instance the mach/m68020/libdb version
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for how to solve this problem.
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508
mach/proto/grind/atlin.c
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508
mach/proto/grind/atlin.c
Normal file
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@ -0,0 +1,508 @@
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/* $Header$ */
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#define DEBUGGEE
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#include "message.h"
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#define MAXBP 128
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#define MAXTRACE 16
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static int nbp; /* # of breakpoints */
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static char *bp[MAXBP];
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static int ntrace;
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static struct trace {
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char *begin_trace, *end_trace;
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} trace_buf[MAXTRACE];
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static struct message_hdr ok_message;
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#define OFF 0
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#define SS 1 /* single stepping */
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#define SSF 2 /* single stepping, counting functions
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as single statements */
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static char *
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BUFTOA(p)
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register char *p;
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{
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register long l = 0;
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register int i;
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for (i = PS; i>0; i--) {
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l = (l << 8) | (*p++ & 0377);
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}
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return (char *) l;
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}
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static long
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BUFTOL(p)
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register char *p;
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{
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register long l = 0;
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register int i;
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for (i = LS; i>0; i--) {
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l = (l << 8) | (*p++ & 0377);
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}
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return l;
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}
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static
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ATOBUF(p, cp)
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register char *p;
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char *cp;
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{
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register int i;
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register long l = (long) cp;
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p += PS;
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for (i = PS; i > 0; i--) {
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*--p = l;
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l >>= 8;
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}
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}
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static
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LTOBUF(p, l)
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register char *p;
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register long l;
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{
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register int i;
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p += LS;
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for (i = LS; i > 0; i--) {
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*--p = l;
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l >>= 8;
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}
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}
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static int single_stepping = OFF;
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static int db_ss = 0;
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static int step_count = 0;
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static char *savedlb;
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static int break_flag = 0;
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static int reading = 0;
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static char *retaddr;
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static char *LB;
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static char *currbrk;
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extern char *__Get_LB();
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extern char *__Get_Hol0();
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extern char *__Get_PC();
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extern char *__Cvt_LB_AB();
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extern char *__Get_HP();
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extern char *_sbrk();
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extern int etext;
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extern __Set_PC();
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static send_ok();
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#define check_ptr(c) (((c) >= (char *)&etext && (c) <= currbrk) || (c) >= LB)
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#define IN_FD 3
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#define OUT_FD 6
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static int
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ureceive(p, c)
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char *p;
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long c;
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{
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int i;
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int retval = 1;
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reading = 1;
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while (c >= 0x1000) {
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i = _read(IN_FD, p, 0x1000);
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if (i == 0) return 0;
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if (i < 0) {
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retval = 0;
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c -= 0x1000;
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}
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else {
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p += i;
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c -= i;
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}
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}
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while (c > 0) {
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i = _read(IN_FD, p, (int)c);
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if (i == 0) return 0;
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if (i < 0) {
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retval = 0;
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break;
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}
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else {
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p += i;
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c -= i;
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}
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}
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reading = 0;
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return retval;
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}
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static int
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usend(p, c)
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char *p;
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long c;
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{
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int i;
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while (c >= 0x1000) {
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i = _write(OUT_FD, p, 0x1000);
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if (i < 0) {
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return 0;
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}
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p += i;
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c -= i;
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}
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while (c > 0) {
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i = _write(OUT_FD, p, (int)c);
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if (i < 0) {
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return 0;
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}
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p += i;
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c -= i;
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}
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return 1;
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}
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static int
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ugetm(message)
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struct message_hdr *message;
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{
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if (! ureceive((char *) message, (long) sizeof(struct message_hdr))) {
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return 0;
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}
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return 1;
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}
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static int
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uputm(message)
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struct message_hdr *message;
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{
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if (! usend((char *) message, (long) sizeof(struct message_hdr))) {
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return 0;
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}
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return 1;
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}
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static int
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sendreply(m, p, sz)
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struct message_hdr *m;
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char *p;
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long sz;
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{
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if (! uputm(m) || ! (sz && p ? usend(p, sz) : 1)) {
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return 0;
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}
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return 1;
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}
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static int
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do_request()
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{
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/* obtain a request from the debugger and perform it */
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int fail = 0;
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register int i;
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register char *c;
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char *c1;
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long sz;
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struct message_hdr message;
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start:
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if (! ugetm(&message)) {
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/* failed to get a message. Something is wrong. Let process continue */
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return 1;
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}
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if (message.m_type & M_DB_SS) db_ss = 1;
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message.m_type &= 0177;
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switch(message.m_type) {
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case M_OK:
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/* sometimes sent to child to see if it lives */
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goto start;
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case M_SETBP:
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/* set a breakpoint */
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if (nbp == MAXBP) {
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fail = 1;
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break;
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}
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bp[nbp++] = BUFTOA(message.m_buf+1);
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break;
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case M_SETTRACE:
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if (ntrace == MAXTRACE) {
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fail = 1;
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break;
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}
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trace_buf[ntrace].begin_trace = BUFTOA(message.m_buf+1);
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trace_buf[ntrace++].end_trace = BUFTOA(message.m_buf+(PS+1));
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break;
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case M_CLRBP:
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i = 0;
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c = BUFTOA(message.m_buf+1);
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while (i < nbp && bp[i] != c) {
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i++;
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}
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if (i < nbp) {
|
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while (i < nbp) {
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bp[i] = bp[i+1];
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i++;
|
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}
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nbp--;
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}
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else {
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fail = 1;
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}
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break;
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case M_CLRTRACE:
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i = 0;
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c = BUFTOA(message.m_buf+1);
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c1 = BUFTOA(message.m_buf+(PS+1));
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while (i < ntrace &&
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trace_buf[i].begin_trace != c &&
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trace_buf[i].end_trace != c1){
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||||
i++;
|
||||
}
|
||||
if (i < ntrace) {
|
||||
while (i < ntrace) {
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trace_buf[i] = trace_buf[i+1];
|
||||
i++;
|
||||
}
|
||||
ntrace--;
|
||||
}
|
||||
else {
|
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fail = 1;
|
||||
}
|
||||
break;
|
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case M_SETSS:
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single_stepping = SS;
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step_count = BUFTOL(message.m_buf+1);
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return 1;
|
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case M_CLRSS:
|
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single_stepping = OFF;
|
||||
break;
|
||||
case M_SETSSF:
|
||||
savedlb = __Get_LB(2);
|
||||
step_count = BUFTOL(message.m_buf+1);
|
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single_stepping = SSF;
|
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return 1;
|
||||
case M_GETBYTES:
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message.m_type = M_DATA;
|
||||
sz = BUFTOL(message.m_buf+1);
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c = BUFTOA(message.m_buf+(LS+1));
|
||||
currbrk = _sbrk(0);
|
||||
if (! check_ptr(c) || ! check_ptr(c+sz-1)) {
|
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fail = 1;
|
||||
break;
|
||||
}
|
||||
return sendreply(&message, c, sz)
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||||
? 0
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||||
: -1;
|
||||
|
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case M_GETSTR:
|
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sz = BUFTOL(message.m_buf+1);
|
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c1 = c = BUFTOA(message.m_buf+(LS+1));
|
||||
currbrk = _sbrk(0);
|
||||
if (check_ptr(c)) {
|
||||
while (*c) {
|
||||
if (c - c1 + 1 >= sz) break;
|
||||
c++;
|
||||
if (! check_ptr(c)) {
|
||||
fail = 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
else fail = 1;
|
||||
if (fail) break;
|
||||
message.m_type = M_DATA;
|
||||
sz = c - c1 + 1;
|
||||
LTOBUF(message.m_buf+1, sz);
|
||||
return sendreply(&message, c1, sz)
|
||||
? 0
|
||||
: -1;
|
||||
|
||||
case M_SETBYTES:
|
||||
if (! ureceive(BUFTOA(message.m_buf+(LS+1)), BUFTOL(message.m_buf+1))) {
|
||||
fail = 1;
|
||||
}
|
||||
break;
|
||||
|
||||
case M_GETEMREGS:
|
||||
i = BUFTOL(message.m_buf+1);
|
||||
c = __Get_LB(i+2); /* local base */
|
||||
c1 = __Get_LB(i+1); /* needed to find PC and SP */
|
||||
ATOBUF(message.m_buf+LB_OFF, c);
|
||||
ATOBUF(message.m_buf+AB_OFF, __Cvt_LB_AB(c));
|
||||
ATOBUF(message.m_buf+PC_OFF, __Get_PC(c1));
|
||||
ATOBUF(message.m_buf+HP_OFF, __Get_HP());
|
||||
ATOBUF(message.m_buf+SP_OFF, __Cvt_LB_AB(c1));
|
||||
return sendreply(&message, (char *) 0, 0L) ? 0 : -1;
|
||||
|
||||
case M_SETEMREGS:
|
||||
/* actually, only the program counter is settable */
|
||||
i = BUFTOL(message.m_buf+1);
|
||||
c = __Get_LB(i+1);
|
||||
__Set_PC(c, BUFTOA(message.m_buf+PC_OFF));
|
||||
break;
|
||||
|
||||
case M_CONT:
|
||||
return 1;
|
||||
|
||||
case M_DUMP:
|
||||
currbrk = _sbrk(0);
|
||||
c = __Get_Hol0();
|
||||
c1 = currbrk;
|
||||
message.m_type = M_DGLOB;
|
||||
sz = c1 - c;
|
||||
LTOBUF(message.m_buf+1, sz);
|
||||
ATOBUF(message.m_buf + HP_OFF, __Get_HP());
|
||||
ATOBUF(message.m_buf + PC_OFF, __Get_PC(__Get_LB(1)));
|
||||
ATOBUF(message.m_buf + LB_OFF, c1);
|
||||
|
||||
sendreply(&message, c, sz);
|
||||
if (! ___topsave()) {
|
||||
/* we get here after a ___topload() ! */
|
||||
step_count = 0;
|
||||
nbp = 0;
|
||||
single_stepping = 0;
|
||||
savedlb = 0;
|
||||
break_flag = 0;
|
||||
db_ss = 0;
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
case M_DGLOB:
|
||||
_brk(BUFTOA(message.m_buf + LB_OFF));
|
||||
__Set_HP(BUFTOA(message.m_buf+HP_OFF));
|
||||
if (! ureceive(__Get_Hol0(), BUFTOL(message.m_buf+1))) {}
|
||||
___topload(BUFTOA(message.m_buf + SP_OFF));
|
||||
/*NOTREACHED*/
|
||||
}
|
||||
send_ok(fail ? M_FAIL : M_OK);
|
||||
return fail ? -1 : 0;
|
||||
}
|
||||
|
||||
___sendtop(addr, SP, sz)
|
||||
char *addr, *SP;
|
||||
unsigned sz;
|
||||
{
|
||||
struct message_hdr m;
|
||||
|
||||
m.m_type = M_DSTACK;
|
||||
LTOBUF(m.m_buf+1, (long) sz);
|
||||
ATOBUF(m.m_buf+SP_OFF, SP);
|
||||
sendreply(&m, addr, (long)sz);
|
||||
}
|
||||
|
||||
___restoretop(SP)
|
||||
char *SP;
|
||||
{
|
||||
struct message_hdr m;
|
||||
|
||||
if (! ugetm(&m)) {}
|
||||
if (! ureceive(SP, BUFTOL(m.m_buf+1))) {}
|
||||
}
|
||||
|
||||
static
|
||||
sigcatch()
|
||||
{
|
||||
signal(7, sigcatch);
|
||||
if (reading) send_ok(M_INTR);
|
||||
else break_flag = 1;
|
||||
db_ss = 0;
|
||||
}
|
||||
|
||||
static int
|
||||
check_bp()
|
||||
{
|
||||
register int i;
|
||||
|
||||
for (i = 0; i < nbp; i++) {
|
||||
if (bp[i] == retaddr) {
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
check_trace()
|
||||
{
|
||||
register int i;
|
||||
|
||||
for (i = 0; i < ntrace; i++) {
|
||||
if (trace_buf[i].begin_trace <= retaddr &&
|
||||
trace_buf[i].end_trace >= retaddr) {
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static
|
||||
send_ok(type)
|
||||
{
|
||||
register int i;
|
||||
|
||||
ok_message.m_type = type;
|
||||
LTOBUF(ok_message.m_buf+1, (long) retaddr);
|
||||
uputm(&ok_message);
|
||||
}
|
||||
|
||||
void
|
||||
__uX_LiB()
|
||||
/* This function must be called after every LIN and LNI */
|
||||
{
|
||||
int status = M_CONT;
|
||||
|
||||
LB = __Get_LB(0);
|
||||
if ( retaddr) {
|
||||
/* not the first time ... */
|
||||
retaddr = __Get_PC(LB);
|
||||
|
||||
/* first, adjust step_count when single stepping
|
||||
*/
|
||||
if (single_stepping == SS) step_count--;
|
||||
else if (single_stepping == SSF) {
|
||||
char *lb = __Get_LB(1);
|
||||
if (!((char *) &lb < lb && lb >= savedlb ||
|
||||
(char *) &lb > lb && lb <= savedlb)) {
|
||||
}
|
||||
else {
|
||||
savedlb = lb;
|
||||
step_count--;
|
||||
}
|
||||
}
|
||||
|
||||
if (single_stepping != OFF && step_count <= 0) {
|
||||
status = M_END_SS;
|
||||
single_stepping = OFF;
|
||||
}
|
||||
else if (break_flag) status = M_INTR;
|
||||
}
|
||||
else {
|
||||
signal(7, sigcatch);
|
||||
retaddr = __Get_PC(LB);
|
||||
status = M_OK;
|
||||
}
|
||||
|
||||
if (status == M_CONT) {
|
||||
if ((nbp != 0 && check_bp() != 0) ||
|
||||
(ntrace != 0 && check_trace() != 0)) {
|
||||
status = M_OK;
|
||||
}
|
||||
else if (break_flag) status = M_INTR;
|
||||
else {
|
||||
if (db_ss) {
|
||||
db_ss = 0;
|
||||
send_ok(M_DB_SS);
|
||||
while (do_request() <= 0) /* nothing */;
|
||||
}
|
||||
if (break_flag) status = M_INTR;
|
||||
else return;
|
||||
}
|
||||
}
|
||||
|
||||
break_flag = 0;
|
||||
send_ok(status);
|
||||
db_ss = 0;
|
||||
while (do_request() <= 0) /* nothing */;
|
||||
}
|
||||
58
mach/proto/grind/lib.e
Normal file
58
mach/proto/grind/lib.e
Normal file
|
|
@ -0,0 +1,58 @@
|
|||
#
|
||||
|
||||
; $Header$
|
||||
|
||||
mes 2, EM_WSIZE, EM_PSIZE
|
||||
|
||||
exp $__Get_LB
|
||||
pro $__Get_LB,0
|
||||
lor 0
|
||||
1
|
||||
lol 0
|
||||
zlt *2
|
||||
dup EM_PSIZE
|
||||
zer EM_PSIZE
|
||||
cmp
|
||||
zeq *2
|
||||
dch
|
||||
del 0
|
||||
bra *1
|
||||
2
|
||||
ret EM_PSIZE
|
||||
end
|
||||
|
||||
exp $__Get_Hol0
|
||||
pro $__Get_Hol0,0
|
||||
lae 0
|
||||
ret EM_PSIZE
|
||||
end
|
||||
|
||||
exp $__Get_HP
|
||||
pro $__Get_HP,0
|
||||
lor 2
|
||||
ret EM_PSIZE
|
||||
end
|
||||
|
||||
exp $__Set_HP
|
||||
pro $__Set_HP,0
|
||||
lal 0
|
||||
loi EM_PSIZE
|
||||
str 2
|
||||
ret 0
|
||||
end
|
||||
|
||||
exp $__Cvt_LB_AB
|
||||
pro $__Cvt_LB_AB,0
|
||||
lal 0
|
||||
loi EM_PSIZE
|
||||
zer EM_PSIZE
|
||||
cmp
|
||||
zeq *2
|
||||
lal 0
|
||||
loi EM_PSIZE
|
||||
lpb
|
||||
ret EM_PSIZE
|
||||
2
|
||||
zer EM_PSIZE
|
||||
ret EM_PSIZE
|
||||
end
|
||||
91
mach/proto/grind/par_misc.e
Normal file
91
mach/proto/grind/par_misc.e
Normal file
|
|
@ -0,0 +1,91 @@
|
|||
#
|
||||
;
|
||||
; (c) copyright 1988 by the Vrije Universiteit, Amsterdam, The Netherlands.
|
||||
; See the copyright notice in the ACK home directory, in the file "Copyright".
|
||||
;
|
||||
|
||||
;
|
||||
; Module: coroutine primitives
|
||||
; Author: Kees Bot, Edwin Scheffer, Ceriel Jacobs
|
||||
; Version: $Header$
|
||||
;
|
||||
; This has been taken from the ACK Modula-2 runtime system and adapted.
|
||||
;
|
||||
|
||||
mes 2,EM_WSIZE,EM_PSIZE
|
||||
|
||||
;
|
||||
; ___topsave: save the stack by sending it to the debugger
|
||||
;
|
||||
exp $___topsave
|
||||
pro $___topsave, 0
|
||||
mes 11
|
||||
loe 0
|
||||
lae 4 ; load line number and file name
|
||||
loi EM_PSIZE
|
||||
lim ; load ignore mask
|
||||
lor 0 ; load LB
|
||||
|
||||
; now find the last argument base: first find the local base that has
|
||||
; dynamic link 0.
|
||||
|
||||
lor 0
|
||||
1
|
||||
dup EM_PSIZE
|
||||
dch
|
||||
zer EM_PSIZE
|
||||
cmp
|
||||
zeq *2
|
||||
dch
|
||||
bra *1
|
||||
2
|
||||
lpb ; last argument base
|
||||
|
||||
; Now the stuff between the current stack pointer and this argument base
|
||||
; is saved by sending it to the debugger.
|
||||
|
||||
lor 1
|
||||
sbs EM_WSIZE
|
||||
loc EM_WSIZE
|
||||
adu EM_WSIZE ; gives size
|
||||
lor 1 ; SP (the SP BEFORE pushing)
|
||||
lor 1 ; SP (address of stack top to save)
|
||||
cal $___sendtop ; ___sendtop(char *address, char *SP, unsigned size)
|
||||
asp 4*EM_PSIZE+3*EM_WSIZE ; remove the lot from the stack
|
||||
loc 1
|
||||
ret EM_WSIZE ; return 1
|
||||
end 0
|
||||
|
||||
exp $___topload
|
||||
pro $___topload, 0
|
||||
|
||||
lal 0
|
||||
loi EM_PSIZE
|
||||
|
||||
lxl 0
|
||||
2
|
||||
dup EM_PSIZE
|
||||
lal 0
|
||||
loi EM_PSIZE ; compare target SP with current LB to see if we must
|
||||
loi EM_PSIZE
|
||||
cmp ; find another LB first
|
||||
zgt *1
|
||||
dch ; just follow dynamic chain to make sure we find
|
||||
; a legal one
|
||||
bra *2
|
||||
1
|
||||
str 0
|
||||
|
||||
str 1 ; restore SP
|
||||
lor 1
|
||||
adp -EM_PSIZE
|
||||
cal $___restoretop ; ___restoretop(char *SP)
|
||||
asp EM_PSIZE+EM_WSIZE
|
||||
str 0 ; restore local base
|
||||
sim ; ignore mask
|
||||
lae 4
|
||||
sti EM_PSIZE
|
||||
ste 0 ; line and file
|
||||
loc 0
|
||||
ret EM_WSIZE ; return 0
|
||||
end 0
|
||||
Loading…
Reference in a new issue