Mercurial > repos > blastem
diff gen_x86.c @ 593:5ef3fe516da9
Z80 core is sort of working again
| author | Michael Pavone <pavone@retrodev.com> |
|---|---|
| date | Mon, 22 Dec 2014 20:55:10 -0800 |
| parents | 8e395210f50f |
| children | 8c7b63f9fab8 |
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--- a/gen_x86.c Wed Dec 17 23:03:19 2014 -0800 +++ b/gen_x86.c Mon Dec 22 20:55:10 2014 -0800 @@ -33,6 +33,7 @@ #define OP_TEST 0x84 #define OP_XCHG 0x86 #define OP_MOV 0x88 +#define PRE_XOP 0x8F #define OP_XCHG_AX 0x90 #define OP_CDQ 0x99 #define OP_PUSHF 0x9C @@ -1516,6 +1517,13 @@ code->cur = out; } +void push_rdisp(code_info *code, uint8_t base, int32_t disp) +{ + //This instruction has no explicit size, so we pass SZ_B + //to avoid any prefixes or bits being set + x86_rdisp_size(code, OP_SINGLE_EA, OP_EX_PUSH_EA, base, disp, SZ_B); +} + void pop_r(code_info *code, uint8_t reg) { check_alloc_code(code, 2); @@ -1528,6 +1536,19 @@ code->cur = out; } +void pop_rind(code_info *code, uint8_t reg) +{ + check_alloc_code(code, 3); + code_ptr out = code->cur; + if (reg >= R8) { + *(out++) = PRE_REX | REX_RM_FIELD; + reg -= R8 - X86_R8; + } + *(out++) = PRE_XOP; + *(out++) = MODE_REG_INDIRECT | reg; + code->cur = out; +} + void setcc_r(code_info *code, uint8_t cc, uint8_t dst) { check_alloc_code(code, 4); @@ -1855,6 +1876,19 @@ code->cur = out; } +void jmp_rind(code_info *code, uint8_t dst) +{ + check_alloc_code(code, 3); + code_ptr out = code->cur; + if (dst >= R8) { + dst -= R8 - X86_R8; + *(out++) = PRE_REX | REX_RM_FIELD; + } + *(out++) = OP_SINGLE_EA; + *(out++) = MODE_REG_INDIRECT | dst | (OP_EX_JMP_EA << 3); + code->cur = out; +} + void call(code_info *code, code_ptr fun) { check_alloc_code(code, 5);