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32x: drc: ARM implementation, start unification with SVP (untested)

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@821 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-10-21 19:37:41 +00:00
parent f4bb5d6b2c
commit 65c75cb07d
8 changed files with 237 additions and 95 deletions
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41
cpu/drc/emit_x86.c
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@ -9,16 +9,6 @@
enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
// TODO: move
static int reg_map_g2h[] = {
-1, -1, -1, -1,
-1, -1, -1, -1,
-1, -1, -1, -1,
-1, -1, -1, -1,
-1, -1, -1, -1,
-1, -1, -1, -1,
};
#define CONTEXT_REG xBP
#define EMIT_PTR(ptr, val, type) \
@ -62,32 +52,21 @@ static int reg_map_g2h[] = {
// XXX: offs is 8bit only
#define emith_ctx_read(r, offs) { \
EMIT_OP_MODRM(0x8b, 1, r, 5); \
EMIT_OP_MODRM(0x8b, 1, r, xBP); \
EMIT(offs, u8); /* mov tmp, [ebp+#offs] */ \
}
#define emith_ctx_write(r, offs) { \
EMIT_OP_MODRM(0x89, 1, r, 5); \
EMIT_OP_MODRM(0x89, 1, r, xBP); \
EMIT(offs, u8); /* mov [ebp+#offs], tmp */ \
}
#define emith_ctx_sub(val, offs) { \
EMIT_OP_MODRM(0x81, 1, 5, 5); \
EMIT_OP_MODRM(0x81, 1, 5, xBP); \
EMIT(offs, u8); \
EMIT(val, u32); /* sub [ebp+#offs], dword val */ \
}
#define emith_test_t() { \
if (reg_map_g2h[SHR_SR] == -1) { \
EMIT_OP_MODRM(0xf6, 1, 0, 5); \
EMIT(SHR_SR * 4, u8); \
EMIT(0x01, u8); /* test [ebp+SHR_SR], byte 1 */ \
} else { \
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_OP(0xe9); \
@ -100,7 +79,7 @@ static int reg_map_g2h[] = {
EMIT(disp, u32); \
}
#define EMIT_CONDITIONAL(code, is_nonzero) { \
#define EMITH_CONDITIONAL(code, is_nonzero) { \
u8 *ptr = tcache_ptr; \
tcache_ptr = tcache_ptr + 2; \
code; \
@ -127,3 +106,15 @@ static int reg_map_g2h[] = {
emith_move_r_imm(rd, imm); \
}
/* SH2 drc specific */
#define emith_test_t() { \
if (reg_map_g2h[SHR_SR] == -1) { \
EMIT_OP_MODRM(0xf6, 1, 0, 5); \
EMIT(SHR_SR * 4, u8); \
EMIT(0x01, u8); /* test [ebp+SHR_SR], byte 1 */ \
} else { \
EMIT_OP_MODRM(0xf7, 3, 0, reg_map_g2h[SHR_SR]); \
EMIT(0x01, u16); /* test <reg>, word 1 */ \
} \
}