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x86-asm: More opcodes 

Some new opcodes and some aliases: ljmp[wl], prefetch{nta,t0,t1,t2},
bswap[lq], sysretq, swapgs.
master
Michael Matz 2016-07-11 21:11:13 +02:00
parent d9d029006c
commit 6a5ec8cb3c
2 changed files with 23 additions and 0 deletions
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11
tests/asmtest.S
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@ -287,6 +287,8 @@ ljmp $0x100, $0x1000
#else
ljmp *0x100
ljmp *(%rdi)
ljmpl *(%esi)
ljmpw *(%esi)
#endif
ret
@ -484,6 +486,7 @@ L3:
fwait
bswap %edx
bswapl %ecx
xadd %ecx, %edx
xaddb %dl, 0x1000
xaddw %ax, 0x1000
@ -515,6 +518,7 @@ fucomip %st(5), %st
cmovns %edx, %edi
cmovne %ax, %si
#ifdef __x86_64__
bswapq %rsi
cmovz %rdi,%rbx
#endif
@ -610,9 +614,14 @@ int $0x10
#ifdef __x86_64__
syscall
sysret
sysretq
lfence
mfence
sfence
prefetchnta 0x18(%rdx)
prefetcht0 (%rcx)
prefetcht1 (%rsi)
prefetcht2 (%rdi)
clflush 0x1000(%rax,%rcx)
fxsaveq (%rdx)
fxrstorq (%rcx)
@ -680,6 +689,8 @@ int $0x10
lidtq 0x1000
sgdtq 0x1000
sidtq 0x1000
swapgs
#endif
lmsw 0x1000

12
x86_64-asm.h
View File

@ -91,6 +91,7 @@ ALT(DEF_ASM_OP2(btcw, 0x0fba, 7, OPC_MODRM | OPC_WLX, OPT_IM8, OPT_REGW | OPT_EA
DEF_ASM_OP0(syscall, 0x0f05)
DEF_ASM_OP0(sysret, 0x0f07)
DEF_ASM_OP0L(sysretq, 0x480f07, 0, 0)
DEF_ASM_OP0(ud2, 0x0f0b)
/* NOTE: we took the same order as gas opcode definition order */
@ -216,6 +217,8 @@ ALT(DEF_ASM_OP1(jmp, 0xeb, 0, 0, OPT_DISP8))
ALT(DEF_ASM_OP1(lcall, 0xff, 3, OPC_MODRM, OPT_EA))
ALT(DEF_ASM_OP1(ljmp, 0xff, 5, OPC_MODRM, OPT_EA))
DEF_ASM_OP1(ljmpw, 0x66ff, 5, OPC_MODRM, OPT_EA)
DEF_ASM_OP1(ljmpl, 0xff, 5, OPC_MODRM, OPT_EA)
ALT(DEF_ASM_OP1(int, 0xcd, 0, 0, OPT_IM8))
ALT(DEF_ASM_OP1(seto, 0x0f90, 0, OPC_MODRM | OPC_TEST, OPT_REG8 | OPT_EA))
@ -374,9 +377,14 @@ ALT(DEF_ASM_OP2(lslw, 0x0f03, 0, OPC_MODRM | OPC_WLX, OPT_EA | OPT_REG, OPT_REG)
DEF_ASM_OP1(str, 0x0f00, 1, OPC_MODRM, OPT_REG16| OPT_EA)
DEF_ASM_OP1(verr, 0x0f00, 4, OPC_MODRM, OPT_REG | OPT_EA)
DEF_ASM_OP1(verw, 0x0f00, 5, OPC_MODRM, OPT_REG | OPT_EA)
DEF_ASM_OP0L(swapgs, 0x0f01, 7, OPC_MODRM)
/* 486 */
/* bswap can't be applied to 16bit regs */
DEF_ASM_OP1(bswap, 0x0fc8, 0, OPC_REG, OPT_REG32 )
DEF_ASM_OP1(bswapl, 0x0fc8, 0, OPC_REG, OPT_REG32 )
DEF_ASM_OP1(bswapq, 0x480fc8, 0, OPC_REG, OPT_REG64 )
ALT(DEF_ASM_OP2(xaddb, 0x0fc0, 0, OPC_MODRM | OPC_BWLX, OPT_REG, OPT_REG | OPT_EA ))
ALT(DEF_ASM_OP2(cmpxchgb, 0x0fb0, 0, OPC_MODRM | OPC_BWLX, OPT_REG, OPT_REG | OPT_EA ))
DEF_ASM_OP1(invlpg, 0x0f01, 7, OPC_MODRM, OPT_EA )
@ -495,6 +503,10 @@ ALT(DEF_ASM_OP2(movhps, 0x0f17, 0, OPC_MODRM, OPT_SSE, OPT_EA | OPT_REG32 ))
DEF_ASM_OP2(sqrtps, 0x0f51, 0, OPC_MODRM, OPT_EA | OPT_SSE, OPT_SSE )
DEF_ASM_OP2(subps, 0x0f5c, 0, OPC_MODRM, OPT_EA | OPT_SSE, OPT_SSE )
DEF_ASM_OP1(prefetchnta, 0x0f18, 0, OPC_MODRM, OPT_EA)
DEF_ASM_OP1(prefetcht0, 0x0f18, 1, OPC_MODRM, OPT_EA)
DEF_ASM_OP1(prefetcht1, 0x0f18, 2, OPC_MODRM, OPT_EA)
DEF_ASM_OP1(prefetcht2, 0x0f18, 3, OPC_MODRM, OPT_EA)
DEF_ASM_OP0L(lfence, 0x0fae, 5, OPC_MODRM)
DEF_ASM_OP0L(mfence, 0x0fae, 6, OPC_MODRM)
DEF_ASM_OP0L(sfence, 0x0fae, 7, OPC_MODRM)