RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-26 01:17:34 +00:00
Code Issues Activity Actions

Kernel: Disambiguate instruction size for mov in read_gs_ptr

Browse source 
Previously we allowed using immediate values here which is ambiguous
as to which specific mov instruction the compiler should choose.
This commit is contained in:
Gunnar Beutner 2021-08-11 08:37:11 +02:00 • committed by Andreas Kling
parent 8545bd5fdb
commit 9964c106ad
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
Kernel/Arch/x86/ASM_wrapper.h
View file

@ -75,7 +75,7 @@ ALWAYS_INLINE FlatPtr read_gs_ptr(FlatPtr offset)
ALWAYS_INLINE void write_gs_ptr(u32 offset, FlatPtr val)
{
asm volatile(
"mov %[val], %%gs:%a[off]" ::[off] "ir"(offset), [val] "ir"(val)
"mov %[val], %%gs:%a[off]" ::[off] "ir"(offset), [val] "r"(val)
: "memory");
}