overhaul pthread cancellation

[musl] / src / thread / i386 / syscall_cp.s

diff --git a/src/thread/i386/syscall_cp.s b/src/thread/i386/syscall_cp.s
new file mode 100644 (file)
index 0000000..6f98a77
--- /dev/null
+++ b/src/thread/i386/syscall_cp.s
@@ -0,0 +1,36 @@
+.text
+.global __syscall_cp_asm
+.type   __syscall_cp_asm,%function
+__syscall_cp_asm:
+       pushl %ebx
+       pushl %esi
+       pushl %edi
+       pushl %ebp
+       leal 20(%esp),%ebp
+       call 1f
+1:     popl %eax
+       movl (%ebp),%ecx
+       addl $[1f-1b],%eax
+       movl %eax,4(%ecx)
+       movl %esp,(%ecx)
+       movl 8(%ecx),%eax
+       testl %eax,%eax
+       jnz 2f
+       movl 4(%ebp),%eax
+       movl 8(%ebp),%ebx
+       movl 12(%ebp),%ecx
+       movl 16(%ebp),%edx
+       movl 20(%ebp),%esi
+       movl 24(%ebp),%edi
+       movl 28(%ebp),%ebp
+1:     int $128
+       popl %ebp
+       popl %edi
+       popl %esi
+       popl %ebx
+       ret
+2:     xorl %eax,%eax
+       movl %eax,4(%ecx)
+       movl %eax,(%ecx)
+       pushl $-1
+       call pthread_exit