Add systemtap static probe points in setjmp/longjmp on x86.

9 files changed, 42 insertions, 9 deletions

diff --git a/ChangeLog b/ChangeLog
index e89af6f..e1a0834 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,14 @@
 2012-05-25  Roland McGrath  <roland@hack.frob.com>
 
+	* sysdeps/x86_64/__longjmp.S: Add a static probe here.
+	* sysdeps/x86_64/setjmp.S: Likewise.
+	* sysdeps/i386/bsd-setjmp.S: Likewise.
+	* sysdeps/i386/bsd-_setjmp.S: Likewise.
+	* sysdeps/i386/setjmp.S: Likewise.
+	* sysdeps/i386/__longjmp.S: Likewise.
+	* sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S: Likewise.
+	* sysdeps/unix/sysv/linux/i386/____longjmp_chk.S: Likewise.
+
 	* include/stap-probe.h: New file.
 	* configure.in: Handle --enable-systemtap.
 	* configure: Regenerated.
diff --git a/sysdeps/i386/__longjmp.S b/sysdeps/i386/__longjmp.S
index 264eb7e..74c8347 100644
--- a/sysdeps/i386/__longjmp.S
+++ b/sysdeps/i386/__longjmp.S
@@ -1,6 +1,5 @@
 /* longjmp for i386.
-   Copyright (C) 1995-1998,2000,2002,2005,2006,2009
-   Free Software Foundation, Inc.
+   Copyright (C) 1995-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -20,6 +19,7 @@
 #include <sysdep.h>
 #include <jmpbuf-offsets.h>
 #include <asm-syntax.h>
+#include <stap-probe.h>
 
 	.text
 ENTRY (__longjmp)
@@ -32,6 +32,7 @@ ENTRY (__longjmp)
 	movl (JB_SP*4)(%eax), %ecx
 	PTR_DEMANGLE (%edx)
 	PTR_DEMANGLE (%ecx)
+	LIBC_PROBE (longjmp, 3, 4@%eax, -4@8(%esp), 4@%edx)
 	cfi_def_cfa(%eax, 0)
 	cfi_register(%eip, %edx)
 	cfi_register(%esp, %ecx)
@@ -49,6 +50,7 @@ ENTRY (__longjmp)
 	cfi_restore(%edi)
 	cfi_restore(%ebp)
 
+	LIBC_PROBE (longjmp_target, 3, 4@%eax, -4@8(%esp), 4@%edx)
 	movl 8(%esp), %eax	/* Second argument is return value.  */
 	movl %ecx, %esp
 #else
@@ -56,12 +58,14 @@ ENTRY (__longjmp)
 	movl 8(%esp), %eax	/* Second argument is return value.  */
 	/* Save the return address now.  */
 	movl (JB_PC*4)(%ecx), %edx
+	LIBC_PROBE (longjmp, 3, 4@%ecx, -4@%eax, 4@%edx)
      	/* Restore registers.  */
 	movl (JB_BX*4)(%ecx), %ebx
 	movl (JB_SI*4)(%ecx), %esi
 	movl (JB_DI*4)(%ecx), %edi
 	movl (JB_BP*4)(%ecx), %ebp
 	movl (JB_SP*4)(%ecx), %esp
+	LIBC_PROBE (longjmp_target, 3, 4@%ecx, -4@%ecx, 4@%edx)
 #endif
 	/* Jump to saved PC.  */
      	jmp *%edx
diff --git a/sysdeps/i386/bsd-_setjmp.S b/sysdeps/i386/bsd-_setjmp.S
index 549aefa..8a5d0d8 100644
--- a/sysdeps/i386/bsd-_setjmp.S
+++ b/sysdeps/i386/bsd-_setjmp.S
@@ -1,5 +1,5 @@
 /* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'.  i386 version.
-   Copyright (C) 1994-1997,2000-2002,2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 1994-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -24,6 +24,7 @@
 #include <jmpbuf-offsets.h>
 #include "bp-sym.h"
 #include "bp-asm.h"
+#include <stap-probe.h>
 
 #define PARMS	LINKAGE		/* no space for saved regs */
 #define JMPBUF	PARMS
@@ -46,6 +47,7 @@ ENTRY (BP_SYM (_setjmp))
 #endif
      	movl %ecx, (JB_SP*4)(%edx)
 	movl PCOFF(%esp), %ecx	/* Save PC we are returning to now.  */
+	LIBC_PROBE (setjmp, 3, 4@%edx, -4@$0, 4@%ecx)
 #ifdef PTR_MANGLE
 	PTR_MANGLE (%ecx)
 #endif
diff --git a/sysdeps/i386/bsd-setjmp.S b/sysdeps/i386/bsd-setjmp.S
index 447fd7d..d3a284e 100644
--- a/sysdeps/i386/bsd-setjmp.S
+++ b/sysdeps/i386/bsd-setjmp.S
@@ -1,5 +1,5 @@
 /* BSD `setjmp' entry point to `sigsetjmp (..., 1)'.  i386 version.
-   Copyright (C) 1994-1997,2000,2001,2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 1994-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -24,6 +24,7 @@
 #include <jmpbuf-offsets.h>
 #include "bp-sym.h"
 #include "bp-asm.h"
+#include <stap-probe.h>
 
 #define PARMS  LINKAGE		/* no space for saved regs */
 #define JMPBUF PARMS
@@ -48,6 +49,7 @@ ENTRY (BP_SYM (setjmp))
 #endif
      	movl %ecx, (JB_SP*4)(%eax)
 	movl PCOFF(%esp), %ecx	/* Save PC we are returning to now.  */
+	LIBC_PROBE (setjmp, 3, 4@%eax, -4@$1, 4@%ecx)
 #ifdef PTR_MANGLE
 	PTR_MANGLE (%ecx)
 #endif
diff --git a/sysdeps/i386/setjmp.S b/sysdeps/i386/setjmp.S
index 7416744..bf47f66 100644
--- a/sysdeps/i386/setjmp.S
+++ b/sysdeps/i386/setjmp.S
@@ -1,6 +1,5 @@
 /* setjmp for i386.
-   Copyright (C) 1995,1996,1997,2000,2001,2005,2006
-	Free Software Foundation, Inc.
+   Copyright (C) 1995-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -22,6 +21,7 @@
 #include <asm-syntax.h>
 #include "bp-sym.h"
 #include "bp-asm.h"
+#include <stap-probe.h>
 
 #define PARMS	LINKAGE		/* no space for saved regs */
 #define JMPBUF	PARMS
@@ -43,6 +43,7 @@ ENTRY (BP_SYM (__sigsetjmp))
 #endif
      	movl %ecx, (JB_SP*4)(%eax)
 	movl PCOFF(%esp), %ecx	/* Save PC we are returning to now.  */
+	LIBC_PROBE (setjmp, 3, 4@%eax, -4@SIGMSK(%esp), 4@%ecx)
 #ifdef PTR_MANGLE
 	PTR_MANGLE (%ecx)
 #endif
diff --git a/sysdeps/unix/sysv/linux/i386/____longjmp_chk.S b/sysdeps/unix/sysv/linux/i386/____longjmp_chk.S
index b2cc368..e135076 100644
--- a/sysdeps/unix/sysv/linux/i386/____longjmp_chk.S
+++ b/sysdeps/unix/sysv/linux/i386/____longjmp_chk.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001,2004,2005,2006,2009 Free Software Foundation, Inc.
+/* Copyright (C) 2001-2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -18,6 +18,7 @@
 #include <sysdep.h>
 #include <jmpbuf-offsets.h>
 #include <asm-syntax.h>
+#include <stap-probe.h>
 
 
 	.section .rodata.str1.1,"aMS",@progbits,1
@@ -78,7 +79,9 @@ ENTRY (____longjmp_chk)
 	cfi_adjust_cfa_offset(-12)
 	movl	4(%esp), %ecx
 
-.Lok:	/* We add unwind information for the target here.  */
+.Lok:
+	LIBC_PROBE (longjmp, 3, 4@%ecx, -4@8(%esp), 4@%edx)
+	/* We add unwind information for the target here.  */
 	cfi_def_cfa(%ecx, 0)
 	cfi_register(%eip, %edx)
 	cfi_register(%esp, %edi)
@@ -101,5 +104,6 @@ ENTRY (____longjmp_chk)
 	cfi_restore(%ebp)
 
 	/* Jump to saved PC.  */
+	LIBC_PROBE (longjmp_target, 3, 4@%ecx, -4@%eax, 4@%edx)
 	jmp	*%edx
 END (____longjmp_chk)
diff --git a/sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S b/sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S
index c392820..d9bdb67 100644
--- a/sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S
+++ b/sysdeps/unix/sysv/linux/x86_64/____longjmp_chk.S
@@ -18,6 +18,7 @@
 #include <sysdep.h>
 #include <jmpbuf-offsets.h>
 #include <asm-syntax.h>
+#include <stap-probe.h>
 
 #include <sigaltstack-offsets.h>
 
@@ -103,7 +104,9 @@ ENTRY(____longjmp_chk)
 	movl	%ebx, %esi
 	cfi_restore (%rsi)
 
-.Lok:	/* We add unwind information for the target here.  */
+.Lok:
+	LIBC_PROBE (longjmp, 3, LP_SIZE@%RDI_LP, -4@%esi, LP_SIZE@%RDX_LP)
+	/* We add unwind information for the target here.  */
 	cfi_def_cfa(%rdi, 0)
 	cfi_register(%rsp,%r8)
 	cfi_register(%rbp,%r9)
@@ -122,5 +125,7 @@ ENTRY(____longjmp_chk)
 	movl	%esi, %eax
 	mov	%R8_LP, %RSP_LP
 	movq	%r9,%rbp
+	LIBC_PROBE (longjmp_target, 3,
+		    LP_SIZE@%RDI_LP, -4@%eax, LP_SIZE@%RDX_LP)
 	jmpq	*%rdx
 END (____longjmp_chk)
diff --git a/sysdeps/x86_64/__longjmp.S b/sysdeps/x86_64/__longjmp.S
index c0c15dc..ef1147a 100644
--- a/sysdeps/x86_64/__longjmp.S
+++ b/sysdeps/x86_64/__longjmp.S
@@ -18,6 +18,7 @@
 #include <sysdep.h>
 #include <jmpbuf-offsets.h>
 #include <asm-syntax.h>
+#include <stap-probe.h>
 
 /* Jump to the position specified by ENV, causing the
    setjmp call there to return VAL, or 1 if VAL is 0.
@@ -41,6 +42,7 @@ ENTRY(__longjmp)
 	orq %rax, %r9
 # endif
 #endif
+	LIBC_PROBE (longjmp, 3, LP_SIZE@%RDI_LP, -4@%esi, LP_SIZE@%RDX_LP)
 	/* We add unwind information for the target here.  */
 	cfi_def_cfa(%rdi, 0)
 	cfi_register(%rsp,%r8)
@@ -60,5 +62,7 @@ ENTRY(__longjmp)
 	mov %esi, %eax
 	mov %R8_LP,%RSP_LP
 	movq %r9,%rbp
+	LIBC_PROBE (longjmp_target, 3,
+		    LP_SIZE@%RDI_LP, -4@%eax, LP_SIZE@%RDX_LP)
 	jmpq *%rdx
 END (__longjmp)
diff --git a/sysdeps/x86_64/setjmp.S b/sysdeps/x86_64/setjmp.S
index 5639292..82ac731 100644
--- a/sysdeps/x86_64/setjmp.S
+++ b/sysdeps/x86_64/setjmp.S
@@ -19,6 +19,7 @@
 #include <sysdep.h>
 #include <jmpbuf-offsets.h>
 #include <asm-syntax.h>
+#include <stap-probe.h>
 
 ENTRY (__sigsetjmp)
 	/* Save registers.  */
@@ -47,6 +48,7 @@ ENTRY (__sigsetjmp)
 #endif
 	movq %rdx, (JB_RSP*8)(%rdi)
 	mov (%rsp), %RAX_LP	/* Save PC we are returning to now.  */
+	LIBC_PROBE (setjmp, 3, LP_SIZE@%RDI_LP, -4@%esi, LP_SIZE@%RAX_LP)
 #ifdef PTR_MANGLE
 	PTR_MANGLE (%RAX_LP)
 #endif