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Diffstat (limited to 'winsup/cygwin/config/i386/longjmp.c')
-rw-r--r--winsup/cygwin/config/i386/longjmp.c51
1 files changed, 51 insertions, 0 deletions
diff --git a/winsup/cygwin/config/i386/longjmp.c b/winsup/cygwin/config/i386/longjmp.c
new file mode 100644
index 000000000..d663e20f7
--- /dev/null
+++ b/winsup/cygwin/config/i386/longjmp.c
@@ -0,0 +1,51 @@
+/* longjmp.c
+
+ Copyright 1996, 1998 Cygnus Solutions.
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license. Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#ifdef __i386__
+#if 1
+asm (" .globl _longjmp \n"
+"_longjmp: \n"
+" pushl %ebp \n"
+" movl %esp,%ebp \n"
+" movl 8(%ebp),%edi \n"
+" movl 12(%ebp),%eax \n"
+" testl %eax,%eax \n"
+" jne 0f \n"
+" incl %eax \n"
+"0: \n"
+" movl %eax,0(%edi) \n"
+" movl 24(%edi),%ebp \n"
+" pushfl \n"
+" popl %ebx \n"
+" movw 42(%edi),%ax \n"
+" movw %ax,%ss \n"
+" movl 28(%edi),%esp \n"
+" pushl 32(%edi) \n"
+" pushl %ebx \n"
+" movw 36(%edi),%ax \n"
+" movw %ax,%es \n"
+#if 0
+/* fs is a system register in windows; don't muck with it */
+" movw 38(%edi),%ax \n"
+" movw %ax,%fs \n"
+#endif
+" movw 40(%edi),%ax \n"
+" movw %ax,%gs \n"
+" movl 0(%edi),%eax \n"
+" movl 4(%edi),%ebx \n"
+" movl 8(%edi),%ecx \n"
+" movl 12(%edi),%edx \n"
+" movl 16(%edi),%esi \n"
+" movl 20(%edi),%edi \n"
+" popfl \n"
+" ret \n");
+#endif
+
+#endif /* __i386__ */