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Lines 142-147
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| 142 |
static int rc; |
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static int rc; |
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static jmp_buf_type *jmpBuffer; |
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static jmp_buf_type *jmpBuffer; |
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/** Starting with Glibc 2.4 pointers in jmp_buf are mangled (XOR) for "protection". |
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* On Sparc ucontext functions are not implemented. |
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*/ |
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#ifdef AFS_LINUX20_ENV |
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#ifdef __GLIBC__ |
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#if (__GLIBC__ > 2) || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 3) |
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#ifdef AFS_SPARC64_LINUX24_ENV |
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static int ptr_mangle(int p) |
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{ |
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register char *tls_ptr __asm__("%g7"); |
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return p ^ *(int*)(tls_ptr + 0x18); |
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} |
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#else |
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#error need ptr_demangle support or use UCONTEXT |
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#endif |
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#endif |
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#endif |
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#else |
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#define ptr_mangle(x) (x) |
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#endif |
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afs_int32 |
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afs_int32 |
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savecontext(ep, savearea, sp) |
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savecontext(ep, savearea, sp) |
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char (*ep) (); |
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char (*ep) (); |
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Lines 155-161
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code = setjmp(savearea->setjmp_buffer); |
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code = setjmp(savearea->setjmp_buffer); |
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jmpBuffer = (jmp_buf_type *) savearea->setjmp_buffer; |
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jmpBuffer = (jmp_buf_type *) savearea->setjmp_buffer; |
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savearea->topstack = (char *)jmpBuffer[LWP_SP]; |
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savearea->topstack = (char *) ptr_mangle(jmpBuffer[LWP_SP]); |
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#if defined(DEBUG) |
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#if defined(DEBUG) |
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{ |
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{ |
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Lines 178-186
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switch (rc) { |
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switch (rc) { |
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case 0: |
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case 0: |
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jmpBuffer = (jmp_buf_type *) jmp_tmp; |
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jmpBuffer = (jmp_buf_type *) jmp_tmp; |
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jmpBuffer[LWP_SP] = (jmp_buf_type) sp; |
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jmpBuffer[LWP_SP] = ptr_mangle((jmp_buf_type) sp); |
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#if defined(AFS_S390_LINUX20_ENV) || defined(AFS_SPARC_LINUX20_ENV) || (defined(AFS_SPARC64_LINUX20_ENV) && defined(AFS_32BIT_USR_ENV)) |
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#if defined(AFS_S390_LINUX20_ENV) || defined(AFS_SPARC_LINUX20_ENV) || (defined(AFS_SPARC64_LINUX20_ENV) && defined(AFS_32BIT_USR_ENV)) |
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jmpBuffer[LWP_FP] = (jmp_buf_type) sp; |
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jmpBuffer[LWP_FP] = ptr_mangle((jmp_buf_type) sp); |
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#endif |
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#endif |
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longjmp(jmp_tmp, 1); |
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longjmp(jmp_tmp, 1); |
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break; |
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break; |
