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authorQi Hu2022-10-24 10:41:55 +0200
committerPaolo Bonzini2022-10-31 09:46:34 +0100
commit121531751087ad3f8d87ad17068835bbcd14fb02 (patch)
tree6e68c6f3e37f7d642645b284d9df227ed05697d3 /scsi/trace.h
parentMerge tag 'block-pull-request' of https://gitlab.com/stefanha/qemu into staging (diff)
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target/i386: Fix calculation of LOCK NEG eflags
After: lock negl -0x14(%rbp) pushf pop %rax %rax will contain the wrong value because the "lock neg" calculates the wrong eflags. Simple test: #include <assert.h> int main() { __volatile__ unsigned test = 0x2363a; __volatile__ char cond = 0; asm( "lock negl %0 \n\t" "sets %1" : "=m"(test), "=r"(cond)); assert(cond & 1); return 0; } Reported-by: Jinyang Shen <shenjinyang@loongson.cn> Co-Developed-by: Xuehai Chen <chenxuehai@loongson.cn> Signed-off-by: Xuehai Chen <chenxuehai@loongson.cn> Signed-off-by: Qi Hu <huqi@loongson.cn> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'scsi/trace.h')
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