xnu-792.25.20.tar.gz

[apple/xnu.git] / bsd / i386 / setjmp.h

diff --git a/bsd/i386/setjmp.h b/bsd/i386/setjmp.h
index b2584eb47132b7a190196fbdb970d18c33fb5ad3..a9d64e0547289b164733c5ea8e3101bc75335650 100644 (file)
--- a/bsd/i386/setjmp.h
+++ b/bsd/i386/setjmp.h
@@ -29,26 +29,54 @@
 #define _BSD_I386_SETJMP_H
 
 #include <sys/cdefs.h>
-#include <i386/signal.h>
+#include <machine/signal.h>
 
-typedef struct sigcontext jmp_buf[1];
 
+#if defined(__x86_64__)
+/*
+ * _JBLEN is number of ints required to save the following:
+ * rflags, rip, rbp, rsp, rbx, r12, r13, r14, r15... these are 8 bytes each
+ * mxcsr, fp control word, sigmask... these are 4 bytes each
+ * add 16 ints for future expansion needs...
+ */
+#define _JBLEN ((9 * 2) + 3 + 16)
+typedef int jmp_buf[_JBLEN];
+typedef int sigjmp_buf[_JBLEN + 1];
+
+#else
+
+/*
+ * _JBLEN is number of ints required to save the following:
+ * eax, ebx, ecx, edx, edi, esi, ebp, esp, ss, eflags, eip,
+ * cs, de, es, fs, gs == 16 ints
+ * onstack, mask = 2 ints
+ */
+
+#if defined(KERNEL)
+typedef struct sigcontext jmp_buf[1];
 #define _JBLEN ((sizeof(struct sigcontext)) / sizeof(int))
 typedef int sigjmp_buf[_JBLEN+1];
+#else
+#define _JBLEN (18)
+typedef int jmp_buf[_JBLEN];
+typedef int sigjmp_buf[_JBLEN + 1];
+#endif
+
+#endif
 
 __BEGIN_DECLS
-extern int setjmp __P((jmp_buf env));
-extern void longjmp __P((jmp_buf env, int val));
+extern int setjmp(jmp_buf env);
+extern void longjmp(jmp_buf env, int val);
 
 #ifndef _ANSI_SOURCE
-int sigsetjmp __P((sigjmp_buf env, int val));
-void siglongjmp __P((sigjmp_buf env, int val));
+int    _setjmp(jmp_buf env);
+void   _longjmp(jmp_buf, int val);
+int sigsetjmp(sigjmp_buf env, int val);
+void siglongjmp(sigjmp_buf env, int val);
 #endif /* _ANSI_SOURCE  */
 
-#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
-int    _setjmp __P((jmp_buf env));
-void   _longjmp __P((jmp_buf, int val));
-void   longjmperror __P((void));
+#if !defined(_ANSI_SOURCE) && !defined(_POSIX_C_SOURCE)
+void   longjmperror(void);
 #endif /* neither ANSI nor POSIX */
 __END_DECLS
 #endif /* !_BSD_I386_SETJMP_H */