OSO/TinyCC
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

x86-asm: Reject some invalid arith imm8 instruction

Browse Source 
There were two errors in the arithmetic imm8 instruction.  They accept
only REGW, and in case the user write a xxxb opcode that variant
needs to be rejected as well (it's not automatically rejected by REGW
in case the destination is memory).
This commit is contained in:
Michael Matz
2016-05-16 05:10:21 +02:00
parent 0f36f60faa
commit f2a4cb0a0e
4 changed files with 25 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
tests/asmtest.S
View File

@ -158,6 +158,22 @@ addl $0x123, %eax
add $0x123, %ebx
add $-16, %ecx
add $-0x123, %esi
add $1, %bx
add $1, %ebx
add $-1, %bx
add $-1, %ebx
add $127, %bx
addl $127, %ebx
addl $-128, %ebx
addl $-128, %ebx
addl $-129, %ebx
addl $128, %ebx
addl $255, %ebx
addl $256, %ebx
andb $0xf, %ah
andb $-15, %cl
xorb $127, %dh
cmpb $42, (%eax)
addl $0x123, 0x100
addl $0x123, 0x100(%ebx)
addl $0x123, 0x100(%ebx,%edx,2)