RaySollium99/picodrive
1
0
Fork 0
mirror of https://github.com/RaySollium99/picodrive.git synced 2025-09-05 15:27:46 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

32x: drc: mmap dram+rom for direct dereference

Browse source 
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@851 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2010-01-02 21:03:04 +00:00
parent f6c49d38cb
commit b081408f66
8 changed files with 200 additions and 71 deletions
Download patch file Download diff file Expand all files Collapse all files

96
cpu/drc/emit_x86.c
View file

@ -219,29 +219,38 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
emith_add_r_imm(r, imm); \
}
#define emith_or_r_imm_c(cond, r, imm) { \
(void)(cond); \
emith_or_r_imm(r, imm); \
}
#define emith_eor_r_imm_c(cond, r, imm) { \
(void)(cond); \
emith_eor_r_imm(r, imm); \
}
#define emith_sub_r_imm_c(cond, r, imm) { \
(void)(cond); \
emith_sub_r_imm(r, imm); \
}
#define emith_bic_r_imm_c(cond, r, imm) { \
(void)(cond); \
emith_bic_r_imm(r, imm); \
}
#define emith_or_r_imm_c(cond, r, imm) \
emith_or_r_imm(r, imm)
#define emith_eor_r_imm_c(cond, r, imm) \
emith_eor_r_imm(r, imm)
#define emith_bic_r_imm_c(cond, r, imm) \
emith_bic_r_imm(r, imm)
#define emith_ror_c(cond, d, s, cnt) \
emith_ror(d, s, cnt)
#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()
#define emith_read_r_r_offs_c(cond, r, rs, offs) \
emith_read_r_r_offs(r, rs, offs)
#define emith_write_r_r_offs_c(cond, r, rs, offs) \
emith_write_r_r_offs(r, rs, offs)
#define emith_read8_r_r_offs_c(cond, r, rs, offs) \
emith_read8_r_r_offs(r, rs, offs)
#define emith_write8_r_r_offs_c(cond, r, rs, offs) \
emith_write8_r_r_offs(r, rs, offs)
#define emith_read16_r_r_offs_c(cond, r, rs, offs) \
emith_read16_r_r_offs(r, rs, offs)
#define emith_write16_r_r_offs_c(cond, r, rs, offs) \
emith_write16_r_r_offs(r, rs, offs)
#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) { \
@ -391,22 +400,44 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
#define emith_rolcf emith_rolc
#define emith_rorcf emith_rorc
#define emith_ctx_op(op, r, offs) do { \
#define emith_deref_op(op, r, rs, offs) do { \
/* mov r <-> [ebp+#offs] */ \
if ((offs) >= 0x80) { \
EMIT_OP_MODRM(op, 2, r, xBP); \
EMIT_OP_MODRM(op, 2, r, rs); \
EMIT(offs, u32); \
} else { \
EMIT_OP_MODRM(op, 1, r, xBP); \
EMIT_OP_MODRM(op, 1, r, rs); \
EMIT(offs, u8); \
} \
} while (0)
#define emith_read_r_r_offs(r, rs, offs) \
emith_deref_op(0x8b, r, rs, offs)
#define emith_write_r_r_offs(r, rs, offs) \
emith_deref_op(0x89, r, rs, offs)
#define emith_read8_r_r_offs(r, rs, offs) \
emith_deref_op(0x8a, r, rs, offs)
#define emith_write8_r_r_offs(r, rs, offs) \
emith_deref_op(0x88, r, rs, offs)
#define emith_read16_r_r_offs(r, rs, offs) { \
EMIT(0x66, u8); /* operand override */ \
emith_read_r_r_offs(r, rs, offs); \
}
#define emith_write16_r_r_offs(r, rs, offs) { \
EMIT(0x66, u8); \
emith_write16_r_r_offs(r, rs, offs) \
}
#define emith_ctx_read(r, offs) \
emith_ctx_op(0x8b, r, offs)
emith_read_r_r_offs(r, CONTEXT_REG, offs)
#define emith_ctx_write(r, offs) \
emith_ctx_op(0x89, r, offs)
emith_write_r_r_offs(r, CONTEXT_REG, offs)
#define emith_ctx_read_multiple(r, offs, cnt, tmpr) do { \
int r_ = r, offs_ = offs, cnt_ = cnt; \
@ -460,7 +491,7 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
EMIT_OP_MODRM(0xff, 3, 2, r)
#define emith_call_ctx(offs) { \
EMIT_OP_MODRM(0xff, 2, 2, xBP); \
EMIT_OP_MODRM(0xff, 2, 2, CONTEXT_REG); \
EMIT(offs, u32); \
}
@ -471,7 +502,7 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
EMIT_OP_MODRM(0xff, 3, 4, r)
#define emith_jump_ctx(offs) { \
EMIT_OP_MODRM(0xff, 2, 4, xBP); \
EMIT_OP_MODRM(0xff, 2, 4, CONTEXT_REG); \
EMIT(offs, u32); \
}
@ -483,10 +514,27 @@ enum { xAX = 0, xCX, xDX, xBX, xSP, xBP, xSI, xDI };
JMP8_EMIT(cond, cond_ptr); \
}
#define EMITH_JMP3_START(cond) { \
u8 *cond_ptr, *else_ptr; \
JMP8_POS(cond_ptr)
#define EMITH_JMP3_MID(cond) \
JMP8_POS(else_ptr); \
JMP8_EMIT(cond, cond_ptr);
#define EMITH_JMP3_END() \
JMP8_EMIT_NC(else_ptr); \
}
// "simple" jump (no more then a few insns)
// ARM will use conditional instructions here
#define EMITH_SJMP_START EMITH_JMP_START
#define EMITH_SJMP_END EMITH_JMP_END
#define EMITH_SJMP3_START EMITH_JMP3_START
#define EMITH_SJMP3_MID EMITH_JMP3_MID
#define EMITH_SJMP3_END EMITH_JMP3_END
#define host_arg2reg(rd, arg) \
switch (arg) { \
case 0: rd = xAX; break; \