qiurui
/
glibc
mirror of git://sourceware.org/git/glibc.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

hurd: make __thread_set_pcsptp align stack 

When cancelling a thread, __pthread_do_cancel forces calling call_exit,
but we need to align down the stack, so any further SSE use can work.
This commit is contained in:
Samuel Thibault 2026-01-17 15:15:33 +01:00
parent 872cc459a9
commit 0bbeb1fd13
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
sysdeps/mach/hurd/x86_64/htl/pt-machdep.c
View File

@ -24,6 +24,7 @@
#include <mach/x86_64/mach_i386.h>
#include <mach/mig_errors.h>
#include <mach/thread_status.h>
#include <thread_state.h>
#include <pt-sysdep.h>
int
@ -48,7 +49,11 @@ __thread_set_pcsptp (thread_t thread,
if (set_sp)
state.ursp = (uintptr_t) sp;
if (set_ip)
state.rip = (uintptr_t) ip;
{
/* Making it call something else, we have to re-align the stack for SSE. */
state.ursp = PTR_ALIGN_DOWN_8_16 (state.ursp);
state.rip = (uintptr_t) ip;
}
err = __thread_set_state (thread, i386_REGS_SEGS_STATE,
(thread_state_t) &state, i386_THREAD_STATE_COUNT);