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Add systemtap static probe points in setjmp/longjmp on x86.
This commit is contained in:
Roland McGrath
parent
3a097cc7a1
commit
8422c9a560
@ -1,5 +1,14 @@
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2012-05-25 Roland McGrath <roland@hack.frob.com>
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* sysdeps/x86_64/__longjmp.S: Add a static probe here.
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* sysdeps/x86_64/setjmp.S: Likewise.
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* sysdeps/i386/bsd-setjmp.S: Likewise.
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* sysdeps/i386/bsd-_setjmp.S: Likewise.
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* sysdeps/i386/setjmp.S: Likewise.
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* sysdeps/i386/__longjmp.S: Likewise.
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* sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S: Likewise.
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* sysdeps/unix/sysv/linux/i386/____longjmp_chk.S: Likewise.
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* include/stap-probe.h: New file.
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* configure.in: Handle --enable-systemtap.
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* configure: Regenerated.
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@ -1,6 +1,5 @@
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/* longjmp for i386.
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Copyright (C) 1995-1998,2000,2002,2005,2006,2009
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Free Software Foundation, Inc.
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Copyright (C) 1995-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -20,6 +19,7 @@
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#include <sysdep.h>
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#include <jmpbuf-offsets.h>
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#include <asm-syntax.h>
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#include <stap-probe.h>
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.text
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ENTRY (__longjmp)
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@ -32,6 +32,7 @@ ENTRY (__longjmp)
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movl (JB_SP*4)(%eax), %ecx
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PTR_DEMANGLE (%edx)
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PTR_DEMANGLE (%ecx)
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LIBC_PROBE (longjmp, 3, 4@%eax, -4@8(%esp), 4@%edx)
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cfi_def_cfa(%eax, 0)
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cfi_register(%eip, %edx)
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cfi_register(%esp, %ecx)
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@ -49,6 +50,7 @@ ENTRY (__longjmp)
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cfi_restore(%edi)
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cfi_restore(%ebp)
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LIBC_PROBE (longjmp_target, 3, 4@%eax, -4@8(%esp), 4@%edx)
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movl 8(%esp), %eax /* Second argument is return value. */
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movl %ecx, %esp
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#else
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@ -56,12 +58,14 @@ ENTRY (__longjmp)
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movl 8(%esp), %eax /* Second argument is return value. */
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/* Save the return address now. */
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movl (JB_PC*4)(%ecx), %edx
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LIBC_PROBE (longjmp, 3, 4@%ecx, -4@%eax, 4@%edx)
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/* Restore registers. */
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movl (JB_BX*4)(%ecx), %ebx
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movl (JB_SI*4)(%ecx), %esi
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movl (JB_DI*4)(%ecx), %edi
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movl (JB_BP*4)(%ecx), %ebp
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movl (JB_SP*4)(%ecx), %esp
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LIBC_PROBE (longjmp_target, 3, 4@%ecx, -4@%ecx, 4@%edx)
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#endif
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/* Jump to saved PC. */
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jmp *%edx
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@ -1,5 +1,5 @@
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/* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. i386 version.
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Copyright (C) 1994-1997,2000-2002,2005, 2006 Free Software Foundation, Inc.
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Copyright (C) 1994-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -24,6 +24,7 @@
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#include <jmpbuf-offsets.h>
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#include "bp-sym.h"
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#include "bp-asm.h"
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#include <stap-probe.h>
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#define PARMS LINKAGE /* no space for saved regs */
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#define JMPBUF PARMS
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@ -46,6 +47,7 @@ ENTRY (BP_SYM (_setjmp))
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#endif
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movl %ecx, (JB_SP*4)(%edx)
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movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */
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LIBC_PROBE (setjmp, 3, 4@%edx, -4@$0, 4@%ecx)
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#ifdef PTR_MANGLE
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PTR_MANGLE (%ecx)
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#endif
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@ -1,5 +1,5 @@
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/* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. i386 version.
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Copyright (C) 1994-1997,2000,2001,2005, 2006 Free Software Foundation, Inc.
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Copyright (C) 1994-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -24,6 +24,7 @@
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#include <jmpbuf-offsets.h>
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#include "bp-sym.h"
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#include "bp-asm.h"
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#include <stap-probe.h>
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#define PARMS LINKAGE /* no space for saved regs */
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#define JMPBUF PARMS
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@ -48,6 +49,7 @@ ENTRY (BP_SYM (setjmp))
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#endif
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movl %ecx, (JB_SP*4)(%eax)
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movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */
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LIBC_PROBE (setjmp, 3, 4@%eax, -4@$1, 4@%ecx)
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#ifdef PTR_MANGLE
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PTR_MANGLE (%ecx)
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#endif
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@ -1,6 +1,5 @@
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/* setjmp for i386.
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Copyright (C) 1995,1996,1997,2000,2001,2005,2006
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Free Software Foundation, Inc.
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Copyright (C) 1995-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -22,6 +21,7 @@
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#include <asm-syntax.h>
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#include "bp-sym.h"
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#include "bp-asm.h"
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#include <stap-probe.h>
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#define PARMS LINKAGE /* no space for saved regs */
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#define JMPBUF PARMS
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@ -43,6 +43,7 @@ ENTRY (BP_SYM (__sigsetjmp))
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#endif
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movl %ecx, (JB_SP*4)(%eax)
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movl PCOFF(%esp), %ecx /* Save PC we are returning to now. */
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LIBC_PROBE (setjmp, 3, 4@%eax, -4@SIGMSK(%esp), 4@%ecx)
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#ifdef PTR_MANGLE
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PTR_MANGLE (%ecx)
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#endif
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@ -1,4 +1,4 @@
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/* Copyright (C) 2001,2004,2005,2006,2009 Free Software Foundation, Inc.
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/* Copyright (C) 2001-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -18,6 +18,7 @@
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#include <sysdep.h>
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#include <jmpbuf-offsets.h>
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#include <asm-syntax.h>
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#include <stap-probe.h>
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.section .rodata.str1.1,"aMS",@progbits,1
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@ -78,7 +79,9 @@ ENTRY (____longjmp_chk)
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cfi_adjust_cfa_offset(-12)
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movl 4(%esp), %ecx
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.Lok: /* We add unwind information for the target here. */
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.Lok:
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LIBC_PROBE (longjmp, 3, 4@%ecx, -4@8(%esp), 4@%edx)
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/* We add unwind information for the target here. */
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cfi_def_cfa(%ecx, 0)
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cfi_register(%eip, %edx)
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cfi_register(%esp, %edi)
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@ -101,5 +104,6 @@ ENTRY (____longjmp_chk)
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cfi_restore(%ebp)
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/* Jump to saved PC. */
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LIBC_PROBE (longjmp_target, 3, 4@%ecx, -4@%eax, 4@%edx)
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jmp *%edx
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END (____longjmp_chk)
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@ -18,6 +18,7 @@
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#include <sysdep.h>
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#include <jmpbuf-offsets.h>
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#include <asm-syntax.h>
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#include <stap-probe.h>
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#include <sigaltstack-offsets.h>
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@ -103,7 +104,9 @@ ENTRY(____longjmp_chk)
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movl %ebx, %esi
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cfi_restore (%rsi)
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.Lok: /* We add unwind information for the target here. */
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.Lok:
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LIBC_PROBE (longjmp, 3, LP_SIZE@%RDI_LP, -4@%esi, LP_SIZE@%RDX_LP)
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/* We add unwind information for the target here. */
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cfi_def_cfa(%rdi, 0)
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cfi_register(%rsp,%r8)
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cfi_register(%rbp,%r9)
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@ -122,5 +125,7 @@ ENTRY(____longjmp_chk)
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movl %esi, %eax
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mov %R8_LP, %RSP_LP
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movq %r9,%rbp
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LIBC_PROBE (longjmp_target, 3,
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LP_SIZE@%RDI_LP, -4@%eax, LP_SIZE@%RDX_LP)
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jmpq *%rdx
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END (____longjmp_chk)
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@ -18,6 +18,7 @@
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#include <sysdep.h>
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#include <jmpbuf-offsets.h>
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#include <asm-syntax.h>
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#include <stap-probe.h>
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/* Jump to the position specified by ENV, causing the
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setjmp call there to return VAL, or 1 if VAL is 0.
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@ -41,6 +42,7 @@ ENTRY(__longjmp)
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orq %rax, %r9
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# endif
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#endif
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LIBC_PROBE (longjmp, 3, LP_SIZE@%RDI_LP, -4@%esi, LP_SIZE@%RDX_LP)
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/* We add unwind information for the target here. */
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cfi_def_cfa(%rdi, 0)
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cfi_register(%rsp,%r8)
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@ -60,5 +62,7 @@ ENTRY(__longjmp)
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mov %esi, %eax
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mov %R8_LP,%RSP_LP
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movq %r9,%rbp
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LIBC_PROBE (longjmp_target, 3,
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LP_SIZE@%RDI_LP, -4@%eax, LP_SIZE@%RDX_LP)
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jmpq *%rdx
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END (__longjmp)
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@ -19,6 +19,7 @@
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#include <sysdep.h>
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#include <jmpbuf-offsets.h>
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#include <asm-syntax.h>
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#include <stap-probe.h>
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ENTRY (__sigsetjmp)
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/* Save registers. */
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@ -47,6 +48,7 @@ ENTRY (__sigsetjmp)
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#endif
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movq %rdx, (JB_RSP*8)(%rdi)
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mov (%rsp), %RAX_LP /* Save PC we are returning to now. */
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LIBC_PROBE (setjmp, 3, LP_SIZE@%RDI_LP, -4@%esi, LP_SIZE@%RAX_LP)
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#ifdef PTR_MANGLE
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PTR_MANGLE (%RAX_LP)
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#endif
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