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32x: drc: inline dispatcher and irq handling; do write-caused irqs

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@849 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-12-29 22:43:10 +00:00
parent efd100fc0a
commit e05b81fc5b
10 changed files with 535 additions and 246 deletions
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75
cpu/drc/emit_x86.c
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@ -239,7 +239,17 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
emith_bic_r_imm(r, imm); \
}
#define emith_jump_reg_c(cond, r) emith_jump_reg(r)
#define emith_jump_ctx_c(cond, offs) emith_jump_ctx(offs)
#define emith_ret_c(cond) emith_ret()
// _r_r_imm
#define emith_add_r_r_imm(d, s, imm) { \
if (d != s) \
emith_move_r_r(d, s); \
emith_add_r_imm(d, imm); \
}
#define emith_and_r_r_imm(d, s, imm) { \
if (d != s) \
emith_move_r_r(d, s); \
@ -279,6 +289,11 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
#define emith_push(r) \
EMIT_OP(0x50 + (r))
#define emith_push_imm(imm) { \
EMIT_OP(0x68); \
EMIT(imm, u32); \
}
#define emith_pop(r) \
EMIT_OP(0x58 + (r))
@ -376,29 +391,41 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
#define emith_rolcf emith_rolc
#define emith_rorcf emith_rorc
// XXX: offs is 8bit only
#define emith_ctx_read(r, offs) do { \
EMIT_OP_MODRM(0x8b, 1, r, xBP); \
EMIT(offs, u8); /* mov tmp, [ebp+#offs] */ \
#define emith_ctx_op(op, r, offs) do { \
/* mov r <-> [ebp+#offs] */ \
if ((offs) >= 0x80) { \
EMIT_OP_MODRM(op, 2, r, xBP); \
EMIT(offs, u32); \
} else { \
EMIT_OP_MODRM(op, 1, r, xBP); \
EMIT(offs, u8); \
} \
} while (0)
#define emith_ctx_read(r, offs) \
emith_ctx_op(0x8b, r, offs)
#define emith_ctx_write(r, offs) \
emith_ctx_op(0x89, r, offs)
#define emith_ctx_read_multiple(r, offs, cnt, tmpr) do { \
int r_ = r, offs_ = offs, cnt_ = cnt; \
for (; cnt_ > 0; r_++, offs_ += 4, cnt_--) \
emith_ctx_read(r_, offs_); \
} while (0)
#define emith_ctx_write(r, offs) do { \
EMIT_OP_MODRM(0x89, 1, r, xBP); \
EMIT(offs, u8); /* mov [ebp+#offs], tmp */ \
} while (0)
#define emith_ctx_write_multiple(r, offs, cnt, tmpr) do { \
int r_ = r, offs_ = offs, cnt_ = cnt; \
for (; cnt_ > 0; r_++, offs_ += 4, cnt_--) \
emith_ctx_write(r_, offs_); \
} while (0)
// assumes EBX is free
#define emith_ret_to_ctx(offs) { \
emith_pop(xBX); \
emith_ctx_write(xBX, offs); \
}
#define emith_jump(ptr) { \
u32 disp = (u32)(ptr) - ((u32)tcache_ptr + 5); \
EMIT_OP(0xe9); \
@ -429,9 +456,25 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
#define emith_call_cond(cond, ptr) \
emith_call(ptr)
#define emith_call_reg(r) \
EMIT_OP_MODRM(0xff, 3, 2, r)
#define emith_call_ctx(offs) { \
EMIT_OP_MODRM(0xff, 2, 2, xBP); \
EMIT(offs, u32); \
}
#define emith_ret() \
EMIT_OP(0xc3)
#define emith_jump_reg(r) \
EMIT_OP_MODRM(0xff, 3, 4, r)
#define emith_jump_ctx(offs) { \
EMIT_OP_MODRM(0xff, 2, 4, xBP); \
EMIT(offs, u32); \
}
#define EMITH_JMP_START(cond) { \
u8 *cond_ptr; \
JMP8_POS(cond_ptr)
@ -476,7 +519,19 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
emith_pop(xSI); \
emith_pop(xBP); \
emith_pop(xBX); \
EMIT_OP(0xc3); /* ret */\
emith_ret(); \
}
// assumes EBX is free temporary
#define emith_sh2_wcall(a, tab, ret_ptr) { \
int arg2_; \
host_arg2reg(arg2_, 2); \
emith_lsr(xBX, a, SH2_WRITE_SHIFT); \
EMIT_OP_MODRM(0x8b, 0, xBX, 4); \
EMIT_SIB(2, xBX, tab); /* mov ebx, [tab + ebx * 4] */ \
emith_ctx_read(arg2_, offsetof(SH2, is_slave)); \
emith_push_imm((long)(ret_ptr)); \
emith_jump_reg(xBX); \
}
#define emith_sh2_dtbf_loop() { \