x86asm: Add movnti

in the unsuffixed form we also accept REG8 and REG16, for easier parsing (we have no instruction type for only the LQ forms).
11 months ago · 0c36b3ff2d
2 changed files with 8 additions and 0 deletions
--- a/tests/asmtest.S
+++ b/tests/asmtest.S
@ -701,6 +701,10 @@ int $0x10
    fxsaveq (%r11)
    fxrstorq (%rcx)
    fxrstorq (%r10)
+    movnti %ebx, (%rdi)
+    movntil %ecx, (%rdi)
+    movnti %rax, (%rdi)
+    movntiq %r8, (%rdi)

 #endif

--- a/x86_64-asm.h
+++ b/x86_64-asm.h
@ -520,6 +520,10 @@ 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 )

+    /* movnti should only accept REG32 and REG64, we accept more */
+    DEF_ASM_OP2(movnti, 0x0fc3, 0, OPC_MODRM, OPT_REG, OPT_EA)
+    DEF_ASM_OP2(movntil, 0x0fc3, 0, OPC_MODRM, OPT_REG32, OPT_EA)
+    DEF_ASM_OP2(movntiq, 0x0fc3, 0, OPC_MODRM | OPC_48, OPT_REG64, OPT_EA)
    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)