Mercurial > repos > blastem
changeset 484:0bf5e6b672fe
Add support for test instruction to x86 generator library
| author | Mike Pavone <pavone@retrodev.com> |
|---|---|
| date | Thu, 03 Oct 2013 21:20:29 -0700 |
| parents | 3e1573fa22cf |
| children | b449af228c63 |
| files | gen_x86.c gen_x86.h |
| diffstat | 2 files changed, 35 insertions(+), 4 deletions(-) [+] |
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--- a/gen_x86.c Tue Oct 01 23:51:16 2013 -0700 +++ b/gen_x86.c Thu Oct 03 21:20:29 2013 -0700 @@ -1,6 +1,6 @@ /* Copyright 2013 Michael Pavone - This file is part of BlastEm. + This file is part of BlastEm. BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. */ #include "gen_x86.h" @@ -30,6 +30,7 @@ #define PRE_SIZE 0x66 #define OP_JCC 0x70 #define OP_IMMED_ARITH 0x80 +#define OP_TEST 0x84 #define OP_XCHG 0x86 #define OP_MOV 0x88 #define OP_XCHG_AX 0x90 @@ -430,7 +431,7 @@ uint8_t * x86_ir(uint8_t * out, uint8_t opcode, uint8_t op_ex, uint8_t al_opcode, int32_t val, uint8_t dst, uint8_t size) { uint8_t sign_extend = 0; - if ((size == SZ_D || size == SZ_Q) && val <= 0x7F && val >= -0x80) { + if (opcode != OP_NOT_NEG && (size == SZ_D || size == SZ_Q) && val <= 0x7F && val >= -0x80) { sign_extend = 1; opcode |= BIT_DIR; } @@ -1023,6 +1024,31 @@ return x86_rrdisp8_sizedir(out, OP_CMP, dst, src_base, disp, size, BIT_DIR); } +uint8_t * test_rr(uint8_t * out, uint8_t src, uint8_t dst, uint8_t size) +{ + return x86_rr_sizedir(out, OP_TEST, src, dst, size); +} + +uint8_t * test_ir(uint8_t * out, int32_t val, uint8_t dst, uint8_t size) +{ + return x86_ir(out, OP_NOT_NEG, OP_EX_TEST_I, OP_TEST, val, dst, size); +} + +uint8_t * test_irdisp8(uint8_t * out, int32_t val, uint8_t dst_base, int8_t disp, uint8_t size) +{ + return x86_irdisp8(out, OP_NOT_NEG, OP_EX_TEST_I, val, dst_base, disp, size); +} + +uint8_t * test_rrdisp8(uint8_t * out, uint8_t src, uint8_t dst_base, int8_t disp, uint8_t size) +{ + return x86_rrdisp8_sizedir(out, OP_TEST, src, dst_base, disp, size, 0); +} + +uint8_t * test_rdisp8r(uint8_t * out, uint8_t src_base, int8_t disp, uint8_t dst, uint8_t size) +{ + return x86_rrdisp8_sizedir(out, OP_TEST, dst, src_base, disp, size, BIT_DIR); +} + uint8_t * imul_rr(uint8_t * out, uint8_t src, uint8_t dst, uint8_t size) { return x86_rr_sizedir(out, OP2_IMUL | (PRE_2BYTE << 8), dst, src, size); @@ -1139,7 +1165,7 @@ } uint8_t * mov_ir(uint8_t * out, int64_t val, uint8_t dst, uint8_t size) -{ +{ uint8_t sign_extend = 0; if (size == SZ_Q && val <= 0x7FFFFFFF && val >= -2147483648) { sign_extend = 1;
--- a/gen_x86.h Tue Oct 01 23:51:16 2013 -0700 +++ b/gen_x86.h Thu Oct 03 21:20:29 2013 -0700 @@ -1,6 +1,6 @@ /* Copyright 2013 Michael Pavone - This file is part of BlastEm. + This file is part of BlastEm. BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. */ #ifndef GEN_X86_H_ @@ -154,6 +154,11 @@ uint8_t * imul_rdisp8(uint8_t * out, uint8_t dst_base, int8_t disp, uint8_t size); uint8_t * div_rdisp8(uint8_t * out, uint8_t dst_base, int8_t disp, uint8_t size); uint8_t * idiv_rdisp8(uint8_t * out, uint8_t dst_base, int8_t disp, uint8_t size); +uint8_t * test_rr(uint8_t * out, uint8_t src, uint8_t dst, uint8_t size); +uint8_t * test_ir(uint8_t * out, int32_t val, uint8_t dst, uint8_t size); +uint8_t * test_irdisp8(uint8_t * out, int32_t val, uint8_t dst_base, int8_t disp, uint8_t size); +uint8_t * test_rrdisp8(uint8_t * out, uint8_t src, uint8_t dst_base, int8_t disp, uint8_t size); +uint8_t * test_rdisp8r(uint8_t * out, uint8_t src_base, int8_t disp, uint8_t dst, uint8_t size); uint8_t * mov_rr(uint8_t * out, uint8_t src, uint8_t dst, uint8_t size); uint8_t * mov_rrdisp8(uint8_t * out, uint8_t src, uint8_t dst_base, int8_t disp, uint8_t size); uint8_t * mov_rdisp8r(uint8_t * out, uint8_t src_base, int8_t disp, uint8_t dst, uint8_t size);