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Fix aarch64 setjmp abi

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We now store values in jmp_buf where the compiler wants them to be. This
fixes code that calls __builtin_setjmp() and __builtin_longjmp() such as
libunwind. All libcxxabi tests are now passing on ARM64.

See #1076
This commit is contained in:
Justine Tunney 2024-01-08 13:26:28 -08:00
parent 21093044c0
commit 6ab01716ce
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GPG key ID: BE714B4575D6E328
5 changed files with 15 additions and 19 deletions
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8
libc/nexgen32e/longjmp.S
View file

@ -43,13 +43,13 @@ _longjmp:
mov 48(%rdi),%r15
jmp *56(%rdi)
#elif defined(__aarch64__)
ldp x19,x20,[x0,#0]
ldp x21,x22,[x0,#16]
ldp x29,x30,[x0,#0]
ldp x2,x22,[x0,#16]
ldp x23,x24,[x0,#32]
ldp x25,x26,[x0,#48]
ldp x27,x28,[x0,#64]
ldp x29,x30,[x0,#80]
ldr x2,[x0,#104]
ldp x19,x20,[x0,#80]
ldr x21,[x0,#104]
mov sp,x2
ldp d8 ,d9,[x0,#112]
ldp d10,d11,[x0,#128]

10
libc/nexgen32e/setjmp.S
View file

@ -44,14 +44,14 @@ _setjmp:
xor %eax,%eax
ret
#elif defined(__aarch64__)
stp x19,x20,[x0,#0]
stp x21,x22,[x0,#16]
mov x2,sp
stp x29,x30,[x0,#0]
stp x2,x22,[x0,#16]
stp x23,x24,[x0,#32]
stp x25,x26,[x0,#48]
stp x27,x28,[x0,#64]
stp x29,x30,[x0,#80]
mov x2,sp
str x2,[x0,#104]
stp x19,x20,[x0,#80]
str x21,[x0,#104]
stp d8,d9,[x0,#112]
stp d10,d11,[x0,#128]
stp d12,d13,[x0,#144]