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| author | Michael Matz <matz@suse.de> | 2016-05-14 04:33:41 +0200 |
|---|---|---|
| committer | Michael Matz <matz@suse.de> | 2016-05-14 04:33:41 +0200 |
| commit | 4f27e217a864d8ddb74265d24a5aadea0a3ec92d (patch) | |
| tree | 44f89ca1a324c0152954e335a5c4c184a2ce757d /i386-asm.h | |
| parent | 080ec9faddc4b7661ab05159b07655ae0224ec58 (diff) | |
| download | tinycc-4f27e217a864d8ddb74265d24a5aadea0a3ec92d.tar.gz tinycc-4f27e217a864d8ddb74265d24a5aadea0a3ec92d.tar.bz2 | |
x86-asm: Fix signed constants and opcode order
Two things: negative constants were rejected (e.g. "add $-15,%eax").
Second the insn order was such that the arithmetic IM8S forms
weren't used (always the IM32 ones). Switching them prefers those
but requires a fix for size calculation in case the opcodes were
OPC_ARITH and OPC_WLX (whose size starts with 1, not zero).
Diffstat (limited to 'i386-asm.h')
| -rw-r--r-- | i386-asm.h | 2 |
1 files changed, 1 insertions, 1 deletions
@@ -157,8 +157,8 @@ ALT(DEF_ASM_OP2(lgs, 0x0fb5, 0, OPC_MODRM, OPT_EA, OPT_REG32)) ALT(DEF_ASM_OP2(addb, 0x00, 0, OPC_ARITH | OPC_MODRM | OPC_BWLX, OPT_REG, OPT_EA | OPT_REG)) /* XXX: use D bit ? */ ALT(DEF_ASM_OP2(addb, 0x02, 0, OPC_ARITH | OPC_MODRM | OPC_BWLX, OPT_EA | OPT_REG, OPT_REG)) ALT(DEF_ASM_OP2(addb, 0x04, 0, OPC_ARITH | OPC_BWLX, OPT_IM, OPT_EAX)) -ALT(DEF_ASM_OP2(addb, 0x80, 0, OPC_ARITH | OPC_MODRM | OPC_BWLX, OPT_IM, OPT_EA | OPT_REG)) ALT(DEF_ASM_OP2(addw, 0x83, 0, OPC_ARITH | OPC_MODRM | OPC_WLX, OPT_IM8S, OPT_EA | OPT_REG)) +ALT(DEF_ASM_OP2(addb, 0x80, 0, OPC_ARITH | OPC_MODRM | OPC_BWLX, OPT_IM, OPT_EA | OPT_REG)) ALT(DEF_ASM_OP2(testb, 0x84, 0, OPC_MODRM | OPC_BWLX, OPT_REG, OPT_EA | OPT_REG)) ALT(DEF_ASM_OP2(testb, 0x84, 0, OPC_MODRM | OPC_BWLX, OPT_EA | OPT_REG, OPT_REG)) |