RaySollium99/picodrive
1
0
Fork 0
mirror of https://github.com/RaySollium99/picodrive.git synced 2025-09-05 07:17:45 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

32x: drc: more wip, some games work, debug stats

Browse source 
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@814 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-10-13 15:42:21 +00:00
parent 4c67e7ad99
commit e898de13cd
8 changed files with 195 additions and 134 deletions
Download patch file Download diff file Expand all files Collapse all files

26
cpu/drc/emit_x86.c
View file

@ -1,5 +1,12 @@
#include <stdarg.h>
#if (DRC_DEBUG & 1)
#define COUNT_OP \
host_insn_count++
#else
#define COUNT_OP
#endif
// TODO: move
static int reg_map_g2h[] = {
-1, -1, -1, -1,
@ -20,11 +27,16 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
tcache_ptr = (char *)tcache_ptr + sizeof(type); \
}
#define EMIT_OP(op) { \
COUNT_OP; \
EMIT(op, u8); \
}
#define EMIT_MODRM(mod,r,rm) \
EMIT(((mod)<<6) | ((r)<<3) | (rm), u8)
#define EMIT_OP_MODRM(op,mod,r,rm) { \
EMIT(op, u8); \
EMIT_OP(op); \
EMIT_MODRM(mod, r, rm); \
}
@ -32,7 +44,7 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
EMIT_OP_MODRM(0x8b, 3, dst, src)
#define emith_move_r_imm(r, imm) { \
EMIT(0xb8 + (r), u8); \
EMIT_OP(0xb8 + (r)); \
EMIT(imm, u32); \
}
@ -65,26 +77,24 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
#define emith_test_t() { \
if (reg_map_g2h[SHR_SR] == -1) { \
EMIT(0xf6, u8); \
EMIT_MODRM(1, 0, 5); \
EMIT_OP_MODRM(0xf6, 1, 0, 5); \
EMIT(SHR_SR * 4, u8); \
EMIT(0x01, u8); /* test [ebp+SHR_SR], byte 1 */ \
} else { \
EMIT(0xf7, u8); \
EMIT_MODRM(3, 0, reg_map_g2h[SHR_SR]); \
EMIT_OP_MODRM(0xf7, 3, 0, reg_map_g2h[SHR_SR]); \
EMIT(0x01, u16); /* test <reg>, word 1 */ \
} \
}
#define emith_jump(ptr) { \
u32 disp = (u32)ptr - ((u32)tcache_ptr + 5); \
EMIT(0xe9, u8); \
EMIT_OP(0xe9); \
EMIT(disp, u32); \
}
#define emith_call(ptr) { \
u32 disp = (u32)ptr - ((u32)tcache_ptr + 5); \
EMIT(0xe8, u8); \
EMIT_OP(0xe8); \
EMIT(disp, u32); \
}