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Don't save disabled FPU registers

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pjht 2022-10-30 17:14:24 -05:00
parent 2f3ffefe8e
commit 978cc419f9
1 changed files with 2 additions and 2 deletions
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4
src/unwinder/arch/x86_64.rs
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@ -77,7 +77,7 @@ pub extern "C-unwind" fn save_context() -> Context {
mov [rax + 0x78], r15 mov [rax + 0x78], r15
mov rdx, [rsp] mov rdx, [rsp]
mov [rax + 0x80], rdx mov [rax + 0x80], rdx
stmxcsr [rax + 0x88] /* stmxcsr [rax + 0x88] */
fnstcw [rax + 0x90] fnstcw [rax + 0x90]
ret ret
", ",
@ -95,7 +95,7 @@ pub unsafe extern "C" fn restore_context(ctx: &Context) -> ! {
mov rsp, [rdi + 0x38] mov rsp, [rdi + 0x38]
/* Restore callee-saved control registers */ /* Restore callee-saved control registers */
ldmxcsr [rdi + 0x88] /* ldmxcsr [rdi + 0x88] */
fldcw [rdi + 0x90] fldcw [rdi + 0x90]
/* Restore return address */ /* Restore return address */