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Fix BSD regressions

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The recent change to crt.S that aggressively aligns the system-provided
stack has been rolled back on non-Linux until we can find a better way,
since it can cause a segfault early in execution on several platforms.

This change fixes a regression in tcgetattr() and tcsetattr() on OpenBSD
and NetBSD caused by 4778cd4d27.

This change has been tested across the runitd test fleet which is green.
This commit is contained in:
Justine Tunney 2023-07-01 00:17:33 -07:00
parent 5a77db2cd5
commit 053681cb97
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GPG key ID: BE714B4575D6E328
9 changed files with 34 additions and 37 deletions
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6
libc/crt/crt.S
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@ -72,9 +72,9 @@ _start:
// setup a stack frame
// align stack to GetStackSize() so GetStackAddr() is fast
.weak ape_stack_memsz
mov $ape_stack_memsz,%r8d
mov $ape_stack_align,%r9d
cmp $_HOSTMETAL,%cl
mov $ape_stack_memsz,%r9d
mov $ape_stack_align,%r8d
cmp $_HOSTLINUX,%cl
cmove %r9d,%r8d
neg %r8
and %r8,%rsp