enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
#define CONTEXT_REG xBP
+#define RET_REG xAX
#define ICOND_JO 0x00
#define ICOND_JNO 0x01
#define EMIT_PTR(ptr, val, type) \
*(type *)(ptr) = val
-#define EMIT(val, type) { \
+#define EMIT(val, type) do { \
EMIT_PTR(tcache_ptr, val, type); \
tcache_ptr += sizeof(type); \
-}
+} while (0)
-#define EMIT_OP(op) { \
+#define EMIT_OP(op) do { \
COUNT_OP; \
EMIT(op, u8); \
-}
+} while (0)
+
+#define EMIT_MODRM(mod, r, rm) do { \
+ assert((mod) < 4u); \
+ assert((r) < 8u); \
+ assert((rm) < 8u); \
+ EMIT(((mod)<<6) | ((r)<<3) | (rm), u8); \
+} while (0)
+
+#define EMIT_SIB(scale, index, base) do { \
+ assert((scale) < 4u); \
+ assert((index) < 8u); \
+ assert((base) < 8u); \
+ EMIT(((scale)<<6) | ((index)<<3) | (base), u8); \
+} while (0)
-#define EMIT_MODRM(mod,r,rm) \
- EMIT(((mod)<<6) | ((r)<<3) | (rm), u8)
+#define EMIT_SIB64(scale, index, base) \
+ EMIT_SIB(scale, (index) & ~8u, (base) & ~8u)
-#define EMIT_SIB(scale,index,base) \
- EMIT(((scale)<<6) | ((index)<<3) | (base), u8)
+#define EMIT_REX(w,r,x,b) \
+ EMIT(0x40 | ((w)<<3) | ((r)<<2) | ((x)<<1) | (b), u8)
#define EMIT_OP_MODRM(op,mod,r,rm) do { \
EMIT_OP(op); \
- EMIT_MODRM(mod, r, rm); \
+ EMIT_MODRM(mod, (r), rm); \
} while (0)
+// 64bit friendly, rm when everything is converted
+#define EMIT_OP_MODRM64(op, mod, r, rm) \
+ EMIT_OP_MODRM(op, mod, (r) & ~8u, (rm) & ~8u)
+
#define JMP8_POS(ptr) \
ptr = tcache_ptr; \
tcache_ptr += 2
#define emith_move_r_r(dst, src) \
EMIT_OP_MODRM(0x8b, 3, dst, src)
+#define emith_move_r_r_ptr(dst, src) do { \
+ EMIT_REX_IF(1, dst, src); \
+ EMIT_OP_MODRM64(0x8b, 3, dst, src); \
+} while (0)
+
#define emith_add_r_r(d, s) \
EMIT_OP_MODRM(0x01, 3, s, d)
#define emith_tst_r_r(d, s) \
EMIT_OP_MODRM(0x85, 3, s, d) /* TEST */
+#define emith_tst_r_r_ptr(d, s) do { \
+ EMIT_REX_IF(1, s, d); \
+ EMIT_OP_MODRM64(0x85, 3, s, d); /* TEST */ \
+} while (0)
+
#define emith_cmp_r_r(d, s) \
EMIT_OP_MODRM(0x39, 3, s, d)
// fake teq - test equivalence - get_flags(d ^ s)
-#define emith_teq_r_r(d, s) { \
+#define emith_teq_r_r(d, s) do { \
emith_push(d); \
emith_eor_r_r(d, s); \
emith_pop(d); \
-}
+} while (0)
-#define emith_mvn_r_r(d, s) { \
+#define emith_mvn_r_r(d, s) do { \
if (d != s) \
emith_move_r_r(d, s); \
EMIT_OP_MODRM(0xf7, 3, 2, d); /* NOT d */ \
-}
+} while (0)
-#define emith_negc_r_r(d, s) { \
+#define emith_negc_r_r(d, s) do { \
int tmp_ = rcache_get_tmp(); \
emith_move_r_imm(tmp_, 0); \
emith_sbc_r_r(tmp_, s); \
emith_move_r_r(d, tmp_); \
rcache_free_tmp(tmp_); \
-}
+} while (0)
-#define emith_neg_r_r(d, s) { \
+#define emith_neg_r_r(d, s) do { \
if (d != s) \
emith_move_r_r(d, s); \
EMIT_OP_MODRM(0xf7, 3, 3, d); /* NEG d */ \
-}
+} while (0)
// _r_r_r
-#define emith_add_r_r_r(d, s1, s2) { \
+#define emith_add_r_r_r(d, s1, s2) do { \
if (d == s1) { \
emith_add_r_r(d, s2); \
} else if (d == s2) { \
emith_move_r_r(d, s1); \
emith_add_r_r(d, s2); \
} \
-}
+} while (0)
-#define emith_eor_r_r_r(d, s1, s2) { \
+#define emith_eor_r_r_r(d, s1, s2) do { \
if (d == s1) { \
emith_eor_r_r(d, s2); \
} else if (d == s2) { \
emith_move_r_r(d, s1); \
emith_eor_r_r(d, s2); \
} \
-}
+} while (0)
// _r_r_shift
-#define emith_or_r_r_lsl(d, s, lslimm) { \
+#define emith_or_r_r_lsl(d, s, lslimm) do { \
int tmp_ = rcache_get_tmp(); \
emith_lsl(tmp_, s, lslimm); \
emith_or_r_r(d, tmp_); \
rcache_free_tmp(tmp_); \
-}
+} while (0)
// d != s
-#define emith_eor_r_r_lsr(d, s, lsrimm) { \
+#define emith_eor_r_r_lsr(d, s, lsrimm) do { \
emith_push(s); \
emith_lsr(s, s, lsrimm); \
emith_eor_r_r(d, s); \
emith_pop(s); \
-}
+} while (0)
// _r_imm
-#define emith_move_r_imm(r, imm) { \
+#define emith_move_r_imm(r, imm) do { \
EMIT_OP(0xb8 + (r)); \
EMIT(imm, u32); \
-}
+} while (0)
#define emith_move_r_imm_s8(r, imm) \
emith_move_r_imm(r, (u32)(signed int)(signed char)(imm))
#define emith_and_r_imm(r, imm) \
emith_arith_r_imm(4, r, imm)
-#define emith_sub_r_imm(r, imm) \
+/* used for sub cycles after test, so retain flags with lea */
+#define emith_sub_r_imm(r, imm) do { \
+ assert(r != xSP); \
+ EMIT_OP_MODRM(0x8d, 2, r, r); \
+ EMIT(-(s32)(imm), s32); \
+} while (0)
+
+#define emith_subf_r_imm(r, imm) \
emith_arith_r_imm(5, r, imm)
#define emith_eor_r_imm(r, imm) \
emith_arith_r_imm(4, r, ~(imm))
// fake conditionals (using SJMP instead)
-#define emith_move_r_imm_c(cond, r, imm) { \
+#define emith_move_r_imm_c(cond, r, imm) do { \
(void)(cond); \
emith_move_r_imm(r, imm); \
-}
+} while (0)
-#define emith_add_r_imm_c(cond, r, imm) { \
+#define emith_add_r_imm_c(cond, r, imm) do { \
(void)(cond); \
emith_add_r_imm(r, imm); \
-}
+} while (0)
-#define emith_sub_r_imm_c(cond, r, imm) { \
+#define emith_sub_r_imm_c(cond, r, imm) do { \
(void)(cond); \
emith_sub_r_imm(r, imm); \
-}
+} while (0)
#define emith_or_r_imm_c(cond, r, imm) \
emith_or_r_imm(r, imm)
#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); \
-}
+// _r_r_imm - use lea
+#define emith_add_r_r_imm(d, s, imm) do { \
+ assert(s != xSP); \
+ EMIT_OP_MODRM(0x8d, 2, d, s); /* lea */ \
+ EMIT(imm, s32); \
+} while (0)
+
+#define emith_add_r_r_ptr_imm(d, s, imm) do { \
+ if ((s) != xSP) { \
+ EMIT_REX_IF(1, d, s); \
+ EMIT_OP_MODRM64(0x8d, 2, d, s); /* lea */ \
+ } \
+ else { \
+ if (d != s) \
+ emith_move_r_r_ptr(d, s); \
+ EMIT_REX_IF(1, 0, d); \
+ EMIT_OP_MODRM64(0x81, 3, 0, d); /* add */ \
+ } \
+ EMIT(imm, s32); \
+} while (0)
-#define emith_and_r_r_imm(d, s, imm) { \
+#define emith_and_r_r_imm(d, s, imm) do { \
if (d != s) \
emith_move_r_r(d, s); \
emith_and_r_imm(d, imm); \
-}
+} while (0)
// shift
-#define emith_shift(op, d, s, cnt) { \
+#define emith_shift(op, d, s, cnt) do { \
if (d != s) \
emith_move_r_r(d, s); \
EMIT_OP_MODRM(0xc1, 3, op, d); \
EMIT(cnt, u8); \
-}
+} while (0)
#define emith_lsl(d, s, cnt) \
emith_shift(4, d, s, cnt)
#define emith_push(r) \
EMIT_OP(0x50 + (r))
-#define emith_push_imm(imm) { \
+#define emith_push_imm(imm) do { \
EMIT_OP(0x68); \
EMIT(imm, u32); \
-}
+} while (0)
#define emith_pop(r) \
EMIT_OP(0x58 + (r))
emith_asr(d, d, 32 - (bits)); \
}
-#define emith_setc(r) { \
+#define emith_setc(r) do { \
+ assert(is_abcdx(r)); \
EMIT_OP(0x0f); \
EMIT_OP_MODRM(0x92, 3, 0, r); /* SETC r */ \
-}
+} while (0)
// XXX: stupid mess
-#define emith_mul_(op, dlo, dhi, s1, s2) { \
+#define emith_mul_(op, dlo, dhi, s1, s2) do { \
int rmr; \
if (dlo != xAX && dhi != xAX) \
emith_push(xAX); \
emith_pop(xDX); \
if (dlo != xAX && dhi != xAX) \
emith_pop(xAX); \
-}
+} while (0)
#define emith_mul_u64(dlo, dhi, s1, s2) \
emith_mul_(4, dlo, dhi, s1, s2) /* MUL */
emith_mul_(4, d, -1, s1, s2)
// (dlo,dhi) += signed(s1) * signed(s2)
-#define emith_mula_s64(dlo, dhi, s1, s2) { \
+#define emith_mula_s64(dlo, dhi, s1, s2) do { \
emith_push(dhi); \
emith_push(dlo); \
emith_mul_(5, dlo, dhi, s1, s2); \
EMIT_OP_MODRM(0x03, 0, dlo, 4); \
- EMIT_SIB(0, 4, 4); /* add dlo, [esp] */ \
+ EMIT_SIB(0, 4, 4); /* add dlo, [xsp] */ \
EMIT_OP_MODRM(0x13, 1, dhi, 4); \
EMIT_SIB(0, 4, 4); \
- EMIT(4, u8); /* adc dhi, [esp+4] */ \
- emith_add_r_imm(xSP, 4*2); \
-}
+ EMIT(sizeof(void *), u8); /* adc dhi, [xsp+{4,8}] */ \
+ emith_add_r_r_ptr_imm(xSP, xSP, sizeof(void *) * 2); \
+} while (0)
// "flag" instructions are the same
-#define emith_subf_r_imm emith_sub_r_imm
#define emith_addf_r_r emith_add_r_r
#define emith_subf_r_r emith_sub_r_r
#define emith_adcf_r_r emith_adc_r_r
#define emith_deref_op(op, r, rs, offs) do { \
/* mov r <-> [ebp+#offs] */ \
if ((offs) >= 0x80) { \
- EMIT_OP_MODRM(op, 2, r, rs); \
+ EMIT_OP_MODRM64(op, 2, r, rs); \
EMIT(offs, u32); \
} else { \
- EMIT_OP_MODRM(op, 1, r, rs); \
+ EMIT_OP_MODRM64(op, 1, r, rs); \
EMIT(offs, u8); \
} \
} while (0)
rcache_free_tmp(r_); \
} while (0)
-#define emith_read16_r_r_offs(r, rs, offs) { \
+#define emith_read16_r_r_offs(r, rs, offs) do { \
EMIT(0x66, u8); /* operand override */ \
emith_read_r_r_offs(r, rs, offs); \
-}
+} while (0)
-#define emith_write16_r_r_offs(r, rs, offs) { \
+#define emith_write16_r_r_offs(r, rs, offs) do { \
EMIT(0x66, u8); \
emith_write_r_r_offs(r, rs, offs); \
-}
+} while (0)
#define emith_ctx_read(r, offs) \
emith_read_r_r_offs(r, CONTEXT_REG, offs)
+#define emith_ctx_read_ptr(r, offs) do { \
+ EMIT_REX_IF(1, r, CONTEXT_REG); \
+ emith_deref_op(0x8b, r, CONTEXT_REG, offs); \
+} while (0)
+
#define emith_ctx_write(r, offs) \
emith_write_r_r_offs(r, CONTEXT_REG, offs)
}
#define emith_jump(ptr) { \
- u32 disp = (u32)(ptr) - ((u32)tcache_ptr + 5); \
+ u32 disp = (u8 *)(ptr) - ((u8 *)tcache_ptr + 5); \
EMIT_OP(0xe9); \
EMIT(disp, u32); \
}
#define emith_jump_patchable(target) \
emith_jump(target)
-#define emith_jump_cond(cond, ptr) { \
- u32 disp = (u32)(ptr) - ((u32)tcache_ptr + 6); \
+#define emith_jump_cond(cond, ptr) do { \
+ u32 disp = (u8 *)(ptr) - ((u8 *)tcache_ptr + 6); \
EMIT(0x0f, u8); \
EMIT_OP(0x80 | (cond)); \
EMIT(disp, u32); \
-}
+} while (0)
#define emith_jump_cond_patchable(cond, target) \
emith_jump_cond(cond, target)
#define emith_jump_patch(ptr, target) do { \
- u32 disp_ = (u32)(target) - ((u32)(ptr) + 4); \
+ u32 disp_ = (u8 *)(target) - ((u8 *)(ptr) + 4); \
u32 offs_ = (*(u8 *)(ptr) == 0x0f) ? 2 : 1; \
EMIT_PTR((u8 *)(ptr) + offs_, disp_ - offs_, u32); \
} while (0)
#define emith_jump_at(ptr, target) { \
- u32 disp_ = (u32)(target) - ((u32)(ptr) + 5); \
+ u32 disp_ = (u8 *)(target) - ((u8 *)(ptr) + 5); \
EMIT_PTR(ptr, 0xe9, u8); \
EMIT_PTR((u8 *)(ptr) + 1, disp_, u32); \
}
#define emith_call(ptr) { \
- u32 disp = (u32)(ptr) - ((u32)tcache_ptr + 5); \
+ u32 disp = (u8 *)(ptr) - ((u8 *)tcache_ptr + 5); \
EMIT_OP(0xe8); \
EMIT(disp, u32); \
}
#define emith_call_reg(r) \
EMIT_OP_MODRM(0xff, 3, 2, r)
-#define emith_call_ctx(offs) { \
+#define emith_call_ctx(offs) do { \
EMIT_OP_MODRM(0xff, 2, 2, CONTEXT_REG); \
EMIT(offs, u32); \
-}
+} while (0)
#define emith_ret() \
EMIT_OP(0xc3)
#define emith_jump_reg(r) \
EMIT_OP_MODRM(0xff, 3, 4, r)
-#define emith_jump_ctx(offs) { \
+#define emith_jump_ctx(offs) do { \
EMIT_OP_MODRM(0xff, 2, 4, CONTEXT_REG); \
EMIT(offs, u32); \
-}
+} while (0)
#define emith_push_ret()
// "simple" jump (no more then a few insns)
// ARM will use conditional instructions here
+#define EMITH_SJMP_DECL_() \
+ u8 *cond_ptr
+
+#define EMITH_SJMP_START_(cond) \
+ JMP8_POS(cond_ptr)
+
+#define EMITH_SJMP_END_(cond) \
+ JMP8_EMIT(cond, cond_ptr)
+
#define EMITH_SJMP_START EMITH_JMP_START
#define EMITH_SJMP_END EMITH_JMP_END
#define EMITH_SJMP3_MID EMITH_JMP3_MID
#define EMITH_SJMP3_END EMITH_JMP3_END
-#define emith_pass_arg_r(arg, reg) { \
+#define emith_pass_arg_r(arg, reg) do { \
int rd = 7; \
host_arg2reg(rd, arg); \
- emith_move_r_r(rd, reg); \
-}
+ emith_move_r_r_ptr(rd, reg); \
+} while (0)
-#define emith_pass_arg_imm(arg, imm) { \
+#define emith_pass_arg_imm(arg, imm) do { \
int rd = 7; \
host_arg2reg(rd, arg); \
emith_move_r_imm(rd, imm); \
-}
+} while (0)
#define host_instructions_updated(base, end)
+#ifdef __x86_64__
+
+#define PTR_SCALE 3
+#define NA_TMP_REG xAX // non-arg tmp from reg_temp[]
+
+#define EMIT_REX_IF(w, r, rm) do { \
+ int r_ = (r) > 7 ? 1 : 0; \
+ int rm_ = (rm) > 7 ? 1 : 0; \
+ if ((w) | r_ | rm_) \
+ EMIT_REX(1, r_, 0, rm_); \
+} while (0)
+
+#ifndef _WIN32
+
+#define host_arg2reg(rd, arg) \
+ switch (arg) { \
+ case 0: rd = xDI; break; \
+ case 1: rd = xSI; break; \
+ case 2: rd = xDX; break; \
+ }
+
+#define emith_sh2_drc_entry() { \
+ emith_push(xBX); \
+ emith_push(xBP); \
+ emith_push(xSI); /* to align */ \
+}
+
+#define emith_sh2_drc_exit() { \
+ emith_pop(xSI); \
+ emith_pop(xBP); \
+ emith_pop(xBX); \
+ emith_ret(); \
+}
+
+#else // _WIN32
+
+#define host_arg2reg(rd, arg) \
+ switch (arg) { \
+ case 0: rd = xCX; break; \
+ case 1: rd = xDX; break; \
+ case 2: rd = 8; break; \
+ }
+
+#define emith_sh2_drc_entry() { \
+ emith_push(xBX); \
+ emith_push(xBP); \
+ emith_push(xSI); \
+ emith_push(xDI); \
+ emith_add_r_r_ptr_imm(xSP, xSP, -8*5); \
+}
+
+#define emith_sh2_drc_exit() { \
+ emith_add_r_r_ptr_imm(xSP, xSP, 8*5); \
+ emith_pop(xDI); \
+ emith_pop(xSI); \
+ emith_pop(xBP); \
+ emith_pop(xBX); \
+ emith_ret(); \
+}
+
+#endif // _WIN32
+
+#else // !__x86_64__
+
+#define PTR_SCALE 2
+#define NA_TMP_REG xBX // non-arg tmp from reg_temp[]
+
+#define EMIT_REX_IF(w, r, rm) do { \
+ assert((u32)(r) < 8u); \
+ assert((u32)(rm) < 8u); \
+} while (0)
+
#define host_arg2reg(rd, arg) \
switch (arg) { \
case 0: rd = xAX; break; \
case 2: rd = xCX; break; \
}
-/* SH2 drc specific */
#define emith_sh2_drc_entry() { \
emith_push(xBX); \
emith_push(xBP); \
emith_ret(); \
}
-// assumes EBX is free temporary
+#endif
+
+#define emith_save_caller_regs(mask) do { \
+ if ((mask) & (1 << xAX)) emith_push(xAX); \
+ if ((mask) & (1 << xCX)) emith_push(xCX); \
+ if ((mask) & (1 << xDX)) emith_push(xDX); \
+ if ((mask) & (1 << xSI)) emith_push(xSI); \
+ if ((mask) & (1 << xDI)) emith_push(xDI); \
+} while (0)
+
+#define emith_restore_caller_regs(mask) do { \
+ if ((mask) & (1 << xDI)) emith_pop(xDI); \
+ if ((mask) & (1 << xSI)) emith_pop(xSI); \
+ if ((mask) & (1 << xDX)) emith_pop(xDX); \
+ if ((mask) & (1 << xCX)) emith_pop(xCX); \
+ if ((mask) & (1 << xAX)) emith_pop(xAX); \
+} while (0)
+
#define emith_sh2_wcall(a, tab) { \
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_jump_reg(xBX); \
+ emith_lsr(NA_TMP_REG, a, SH2_WRITE_SHIFT); \
+ EMIT_REX_IF(1, NA_TMP_REG, tab); \
+ EMIT_OP_MODRM64(0x8b, 0, NA_TMP_REG, 4); \
+ EMIT_SIB64(PTR_SCALE, NA_TMP_REG, tab); /* mov tmp, [tab + tmp * {4,8}] */ \
+ emith_move_r_r_ptr(arg2_, CONTEXT_REG); \
+ emith_jump_reg(NA_TMP_REG); \
}
#define emith_sh2_dtbf_loop() { \
JMP8_EMIT(ICOND_JE, jmp0); /* do_sub: */ \
emith_sub_r_r(rn, rm); \
JMP8_EMIT_NC(jmp1); /* done: */ \
- emith_setc(tmp_); \
- EMIT_OP_MODRM(0x31, 3, tmp_, sr); /* T = Q1 ^ Q2 */ \
+ emith_adc_r_r(tmp_, tmp_); \
+ emith_eor_r_r(sr, tmp_); \
rcache_free_tmp(tmp_); \
}
notaz.gp2x.de / picodrive.git / blobdiff