d0p1/ack
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity
ack/mach/powerpc/as/mach5.c

39 lines
1,020 B
C
Raw Normal View History

Signed vs unsigned lower halves of powerpc fixups are now handled by having two assembler directives, ha16() and has16(), for the upper half; has16() applies the sign adjustment. .powerpcfixup is now gone, as we generate the relocation in ha*() instead. Add special logic to the linker for undoing and redoing the sign adjustment when reading/writing fixups. Tests still pass.
2017-01-15 10:51:37 +00:00
Remove #include <stdbool.h> from mach/powerpc/as/mach1.c We should not include a system header file here, because mach/proto/as/comm2.y goes through cpp twice. The include can cause problems like https://github.com/davidgiven/ack/issues/1 Remove this include #<stdbool.h> and leave a comment pointing to the includes in comm0.h. Change the few instances of bool, false, true, to int, 0, 1.
2017-01-30 21:39:23 +00:00
word_t emit_hi(struct expr_t* expr, int is_signed)
Signed vs unsigned lower halves of powerpc fixups are now handled by having two assembler directives, ha16() and has16(), for the upper half; has16() applies the sign adjustment. .powerpcfixup is now gone, as we generate the relocation in ha*() instead. Add special logic to the linker for undoing and redoing the sign adjustment when reading/writing fixups. Tests still pass.
2017-01-15 10:51:37 +00:00
{
/* If this is a symbol reference, discard the symbol and keep only the
* offset part. */
Remove type quad, use type word_t in PowerPC as. Type word_t is for encoding the machine instructions. It only needs 32 bits for PowerPC. It was long (which can have 32 or 64 bits), and there was a second type quad (which was uint32_t). Switch word_t to uint32_t and replace quad with word_t. Also change valu_t and ADDR_T away from long.
2017-01-30 21:15:02 +00:00
word_t type = expr->typ & S_TYP;
word_t val = expr->val;
Signed vs unsigned lower halves of powerpc fixups are now handled by having two assembler directives, ha16() and has16(), for the upper half; has16() applies the sign adjustment. .powerpcfixup is now gone, as we generate the relocation in ha*() instead. Add special logic to the linker for undoing and redoing the sign adjustment when reading/writing fixups. Tests still pass.
2017-01-15 10:51:37 +00:00
uint16_t hi = val >> 16;
uint16_t lo = val & 0xffff;
if (type != S_ABS)
newrelo(expr->typ, RELOPPC | FIXUPFLAGS);
/* If the low half of this relocation is going to be a memory operation,
* then it'll be treated as a signed value. That means that values greater
* than 0x7fff will cause the high word to have 1 subtracted from it; so
* we apply an adjustment here.
*/
if (is_signed && (lo > 0x7fff))
hi++;
return hi;
}
Remove type quad, use type word_t in PowerPC as. Type word_t is for encoding the machine instructions. It only needs 32 bits for PowerPC. It was long (which can have 32 or 64 bits), and there was a second type quad (which was uint32_t). Switch word_t to uint32_t and replace quad with word_t. Also change valu_t and ADDR_T away from long.
2017-01-30 21:15:02 +00:00
word_t emit_lo(struct expr_t* expr)
Signed vs unsigned lower halves of powerpc fixups are now handled by having two assembler directives, ha16() and has16(), for the upper half; has16() applies the sign adjustment. .powerpcfixup is now gone, as we generate the relocation in ha*() instead. Add special logic to the linker for undoing and redoing the sign adjustment when reading/writing fixups. Tests still pass.
2017-01-15 10:51:37 +00:00
{
Remove type quad, use type word_t in PowerPC as. Type word_t is for encoding the machine instructions. It only needs 32 bits for PowerPC. It was long (which can have 32 or 64 bits), and there was a second type quad (which was uint32_t). Switch word_t to uint32_t and replace quad with word_t. Also change valu_t and ADDR_T away from long.
2017-01-30 21:15:02 +00:00
word_t type = expr->typ & S_TYP;
word_t val = expr->val;
Signed vs unsigned lower halves of powerpc fixups are now handled by having two assembler directives, ha16() and has16(), for the upper half; has16() applies the sign adjustment. .powerpcfixup is now gone, as we generate the relocation in ha*() instead. Add special logic to the linker for undoing and redoing the sign adjustment when reading/writing fixups. Tests still pass.
2017-01-15 10:51:37 +00:00
/* If the assembler stored a symbol for relocation later, we need to
* abandon it (because the relocation was generated by emit_ha). */
if (type != S_ABS)
relonami = 0;
return val & 0xffff;
}
Reference in a new issue Copy permalink