gnu-efi/lib/x86_64/setjmp.S
Sergei Trofimovich 803b49c40b */*.S: add non-executable GNU stack marking on ELF-linux
binutils-2.39 enabed a few warning by default
(https://sourceware.org/pipermail/binutils/2022-August/122246.html):

> The ELF linker will now generate a warning message if the stack is made executable.

Let's suppress the warnings in assembly files by adding non-executables
stack markings. This fixes at least systemd build which uses '-Wl,--fatal-warnings':

    https://github.com/systemd/systemd/issues/24226
2022-08-08 11:35:10 -04:00

46 lines
814 B
ArmAsm

.text
.globl setjmp
#ifndef __MINGW32__
.type setjmp, @function
#else
.def setjmp; .scl 2; .type 32; .endef
#endif
setjmp:
pop %rsi
movq %rbx,0x00(%rdi)
movq %rsp,0x08(%rdi)
push %rsi
movq %rbp,0x10(%rdi)
movq %r12,0x18(%rdi)
movq %r13,0x20(%rdi)
movq %r14,0x28(%rdi)
movq %r15,0x30(%rdi)
movq %rsi,0x38(%rdi)
xor %rax,%rax
ret
.globl longjmp
#ifndef __MINGW32__
.type longjmp, @function
#else
.def longjmp; .scl 2; .type 32; .endef
#endif
longjmp:
movl %esi, %eax
movq 0x00(%rdi), %rbx
movq 0x08(%rdi), %rsp
movq 0x10(%rdi), %rbp
movq 0x18(%rdi), %r12
movq 0x20(%rdi), %r13
movq 0x28(%rdi), %r14
movq 0x30(%rdi), %r15
xor %rdx,%rdx
mov $1,%rcx
cmp %rax,%rdx
cmove %rcx,%rax
jmp *0x38(%rdi)
#if defined(__ELF__) && defined(__linux__)
.section .note.GNU-stack,"",%progbits
#endif