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$NetBSD: patch-ad,v 1.13 2000/10/27 04:38:27 mycroft Exp $
--- nsprpub/pr/include/md/_netbsd.h.orig Thu Jul 6 20:46:02 2000
+++ nsprpub/pr/include/md/_netbsd.h Thu Oct 26 07:32:35 2000
@@ -70,39 +70,87 @@
#define CONTEXT(_th) ((_th)->md.context)
-#if defined(__i386__) || defined(__sparc__) || defined(__m68k__) || defined(__powerpc__)
-#define JB_SP_INDEX 2
-#elif defined(__mips__)
-#define JB_SP_INDEX 4
-#elif defined(__alpha__)
-#define JB_SP_INDEX 34
-#elif defined(__arm32__)
/*
- * On the arm32, the jmpbuf regs underwent a name change after NetBSD 1.3.
- */
-#ifdef JMPBUF_REG_R13
-#define JB_SP_INDEX JMPBUF_REG_R13
-#else
-#define JB_SP_INDEX _JB_REG_R13
+** Initialize a thread context to run "_main()" when started
+*/
+#ifdef __i386__
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
+{ \
+ sigsetjmp(CONTEXT(_thread), 1); \
+ CONTEXT(_thread)[2] = (unsigned char*) ((_sp) - 128); \
+ CONTEXT(_thread)[0] = (int) _main; \
+ *status = PR_TRUE; \
+}
+#define _MD_GET_SP(_thread) CONTEXT(_thread)[2]
+#endif
+#ifdef __sparc__
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
+{ \
+ sigsetjmp(CONTEXT(_thread), 1); \
+ CONTEXT(_thread)[2] = (unsigned char*) ((_sp) - 128); \
+ CONTEXT(_thread)[3] = (int) _main; \
+ CONTEXT(_thread)[4] = (int) _main + 4; \
+ *status = PR_TRUE; \
+}
+#define _MD_GET_SP(_thread) CONTEXT(_thread)[2]
+#endif
+#ifdef __powerpc__
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
+{ \
+ sigsetjmp(CONTEXT(_thread), 1); \
+ CONTEXT(_thread)[3] = (unsigned char*) ((_sp) - 128); \
+ CONTEXT(_thread)[4] = (int) _main; \
+ *status = PR_TRUE; \
+}
+#define _MD_GET_SP(_thread) CONTEXT(_thread)[3]
+#endif
+#ifdef __m68k__ /* XXX UNTESTED */
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
+{ \
+ sigsetjmp(CONTEXT(_thread), 1); \
+ CONTEXT(_thread)[2] = (unsigned char*) ((_sp) - 128); \
+ CONTEXT(_thread)[5] = (int) _main; \
+ *status = PR_TRUE; \
+}
+#define _MD_GET_SP(_thread) CONTEXT(_thread)[2]
+#endif
+#ifdef __mips__ /* XXX UNTESTED */
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
+{ \
+ sigsetjmp(CONTEXT(_thread), 1); \
+ CONTEXT(_thread)[32] = (unsigned char*) ((_sp) - 128); \
+ CONTEXT(_thread)[2] = (int) _main; \
+ *status = PR_TRUE; \
+}
+#define _MD_GET_SP(_thread) CONTEXT(_thread)[32]
+#endif
+#ifdef __arm32__ /* XXX UNTESTED */
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
+{ \
+ sigsetjmp(CONTEXT(_thread), 1); \
+ CONTEXT(_thread)[23] = (unsigned char*) ((_sp) - 128); \
+ CONTEXT(_thread)[24] = (int) _main; \
+ *status = PR_TRUE; \
+}
+#define _MD_GET_SP(_thread) CONTEXT(_thread)[23]
+#endif
+#ifdef __alpha__
+#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
+{ \
+ sigsetjmp(CONTEXT(_thread), 1); \
+ CONTEXT(_thread)[34] = (unsigned char*) ((_sp) - 128); \
+ CONTEXT(_thread)[2] = (long) _main; \
+ CONTEXT(_thread)[30] = (long) _main; \
+ CONTEXT(_thread)[31] = (long) _main; \
+ *status = PR_TRUE; \
+}
+#define _MD_GET_SP(_thread) CONTEXT(_thread)[34]
#endif
-#else
-#error "Need to define SP index in jmp_buf here"
+#ifndef _MD_INIT_CONTEXT
+#error "Need to define _MD_INIT_CONTEXT for this platform"
#endif
-#define _MD_GET_SP(_th) (_th)->md.context[JB_SP_INDEX]
#define PR_NUM_GCREGS _JBLEN
-
-/*
-** Initialize a thread context to run "_main()" when started
-*/
-#define _MD_INIT_CONTEXT(_thread, _sp, _main, status) \
-{ \
- *status = PR_TRUE; \
- if (sigsetjmp(CONTEXT(_thread), 1)) { \
- _main(); \
- } \
- _MD_GET_SP(_thread) = (unsigned char*) ((_sp) - 64); \
-}
#define _MD_SWITCH_CONTEXT(_thread) \
if (!sigsetjmp(CONTEXT(_thread), 1)) { \
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