130 lines
4.7 KiB
Plaintext
130 lines
4.7 KiB
Plaintext
$OpenBSD: patch-callback_trampoline_r_trampoline_c,v 1.3 2010/09/23 13:38:33 joshe Exp $
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Fix the horrible trampoline code to work on sparc and
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sparc64. OpenBSD's runtime linker trashes registers which are supposed
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to be preserved across function calls, so steal some space on the
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stack instead.
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Also fix powerpc and mips64.
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--- callback/trampoline_r/trampoline.c.orig Mon Jan 26 07:00:05 2004
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+++ callback/trampoline_r/trampoline.c Fri Jul 30 14:34:10 2010
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@@ -21,7 +21,7 @@
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#endif
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#endif
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#if defined(__rs6000__)
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-#if defined(__NetBSD__)
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+#if defined(__NetBSD__) || defined(__OpenBSD__)
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#define __rs6000netbsd__
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#else
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#if !defined(_AIX)
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@@ -196,8 +196,12 @@ extern RETGETPAGESIZETYPE getpagesize ();
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#ifdef linux
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#include <asm/cachectl.h>
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#else
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+#ifdef __OpenBSD__
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+#include <mips64/sysarch.h>
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+#else
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#ifdef HAVE_SYS_CACHECTL_H
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#include <sys/cachectl.h>
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+#endif
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#endif
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#endif
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#endif
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@@ -259,11 +259,11 @@ extern void __TR_clear_cache();
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#define TRAMP_ALIGN 8
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#endif
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#if defined(__sparc__) && !defined(__sparc64__)
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-#define TRAMP_LENGTH 16
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+#define TRAMP_LENGTH 24
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#define TRAMP_ALIGN 16
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#endif
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#ifdef __sparc64__
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-#define TRAMP_LENGTH 32
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+#define TRAMP_LENGTH 40
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#define TRAMP_ALIGN 16
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#endif
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#ifdef __alpha__
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@@ -614,52 +614,64 @@ __TR_function alloc_trampoline_r (address, data0, data
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/* function:
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* sethi %hi(<data>),%g2 05000000 | (<data> >> 10)
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* sethi %hi(<address>),%g1 03000000 | (<address> >> 10)
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- * jmp %g1+%lo(<address>) 81C06000 | (<address> & 0x3ff)
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+ * add %sp,-8,%sp 9C03BFF8
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* or %g2,%lo(<data>),%g2 8410A000 | (<data> & 0x3ff)
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+ * jmp %g1+%lo(<address>) 81C06000 | (<address> & 0x3ff)
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+ * st %g2,[%sp+96] C423A060
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*/
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#define hi(word) ((unsigned long) (word) >> 10)
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#define lo(word) ((unsigned long) (word) & 0x3ff)
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*(long *) (function + 0) = 0x05000000 | hi(data);
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*(long *) (function + 4) = 0x03000000 | hi(address);
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- *(long *) (function + 8) = 0x81C06000 | lo(address);
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+ *(long *) (function + 8) = 0x9C03BFF8;
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*(long *) (function +12) = 0x8410A000 | lo(data);
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+ *(long *) (function +16) = 0x81C06000 | lo(address);
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+ *(long *) (function +20) = 0xC423A060;
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#define is_tramp(function) \
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(*(long *) (function + 0) & 0xffc00000) == 0x05000000 && \
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(*(long *) (function + 4) & 0xffc00000) == 0x03000000 && \
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- (*(long *) (function + 8) & 0xfffffc00) == 0x81C06000 && \
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- (*(long *) (function +12) & 0xfffffc00) == 0x8410A000
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+ (*(long *) (function + 8)) == 0x9C03BFF8 && \
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+ (*(long *) (function +12) & 0xfffffc00) == 0x8410A000 && \
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+ (*(long *) (function +16) & 0xfffffc00) == 0x81C06000 && \
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+ (*(long *) (function +20)) == 0xC423A060
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#define hilo(hiword,loword) (((hiword) << 10) | ((loword) & 0x3ff))
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#define tramp_address(function) \
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- hilo(*(long *) (function + 4), *(long *) (function + 8))
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+ hilo(*(long *) (function + 4), *(long *) (function +16))
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#define tramp_data(function) \
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hilo(*(long *) (function + 0), *(long *) (function +12))
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#endif
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#ifdef __sparc64__
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/* function:
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* rd %pc,%g1 83414000
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- * ldx [%g1+24],%g2 C4586018
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+ * ldx [%g1+32],%g2 C4586020
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+ * ldx [%g1+24],%g5 CA586018
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+ * add %sp,-32,%sp 9C03BFE0
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* jmp %g2 81C08000
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- * ldx [%g1+16],%g5 CA586010
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+ * stx %g5,[%sp+2239] CA73A8BF
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* .long high32(<data>) <data> >> 32
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* .long low32(<data>) <data> & 0xffffffff
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* .long high32(<address>) <address> >> 32
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* .long low32(<address>) <address> & 0xffffffff
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*/
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*(int *) (function + 0) = 0x83414000;
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- *(int *) (function + 4) = 0xC4586018;
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- *(int *) (function + 8) = 0x81C08000;
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- *(int *) (function +12) = 0xCA586010;
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- *(long *) (function +16) = (long) data;
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- *(long *) (function +24) = (long) address;
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+ *(int *) (function + 4) = 0xC4586020;
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+ *(int *) (function + 8) = 0xCA586018;
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+ *(int *) (function +12) = 0x9C03BFE0;
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+ *(int *) (function +16) = 0x81C08000;
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+ *(int *) (function +20) = 0xCA73A8BF;
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+ *(long *) (function +24) = (long) data;
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+ *(long *) (function +32) = (long) address;
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#define is_tramp(function) \
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*(int *) (function + 0) == 0x83414000 && \
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- *(int *) (function + 4) == 0xC4586018 && \
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- *(int *) (function + 8) == 0x81C08000 && \
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- *(int *) (function +12) == 0xCA586010
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+ *(int *) (function + 4) == 0xC4586020 && \
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+ *(int *) (function + 8) == 0xCA586018 && \
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+ *(int *) (function +12) == 0x9C03BFE0 && \
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+ *(int *) (function +16) == 0x81C08000 && \
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+ *(int *) (function +20) == 0xCA73A8BF
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#define tramp_address(function) \
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- *(long *) (function +24)
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+ *(long *) (function +32)
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#define tramp_data(function) \
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- *(long *) (function +16)
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+ *(long *) (function +24)
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#endif
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#ifdef __alpha__
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/* function:
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