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Don't Store FD Values Into Clobbered X9 Register

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Fixes ___pipe implementation
This commit is contained in:
Thomas A. 2024-06-23 08:42:04 -07:00
parent ac095907bd
commit 8b5c76fff9
1 changed files with 11 additions and 0 deletions
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11
gen/bsdsyscalls/___pipe.S
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@ -59,9 +59,20 @@ MI_ENTRY_POINT(___pipe)
#elif defined(__arm64__)
MI_ENTRY_POINT(___pipe)
#if DARLING
// Dead code due to changes below
#else
mov x9, x0 // Stash FD array
#endif
SYSCALL_NONAME(pipe, 0, cerror_nocancel)
#if DARLING
// the results are already stored into the fd array,
// so we don't need to worry about saving the results
// back into the fd array (plus our svc implementation,
// overwrites the x9 register anyway).
#else
stp w0, w1, [x9] // Save results
#endif
mov x0, #0 // Success
ret // Done