From: Tom Hughes <tom@compton.nu>
Date: Thu, 5 May 2005 08:16:24 +0000 (+0000)
Subject: Allow for the red zone when generating new_mem_stack_signal and
X-Git-Tag: svn/VALGRIND_3_0_0~696
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=3552b6fa3b87e9d9f243af796f8bc76899f4bf27;p=thirdparty%2Fvalgrind.git

Allow for the red zone when generating new_mem_stack_signal and
die_mem_stack_signal events.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3622
---

diff --git a/coregrind/m_sigframe/sigframe-amd64-linux.c b/coregrind/m_sigframe/sigframe-amd64-linux.c
index 241615d452..c4a19bb888 100644
--- a/coregrind/m_sigframe/sigframe-amd64-linux.c
+++ b/coregrind/m_sigframe/sigframe-amd64-linux.c
@@ -404,7 +404,7 @@ static Bool extend ( ThreadState *tst, Addr addr, SizeT size )
 
    /* For tracking memory events, indicate the entire frame has been
       allocated. */
-   VG_TRACK( new_mem_stack_signal, addr, size );
+   VG_TRACK( new_mem_stack_signal, addr - VGA_STACK_REDZONE_SIZE, size );
 
    return True;
 }
@@ -600,7 +600,7 @@ void VG_(sigframe_destroy)( ThreadId tid, Bool isRT )
 
    size = restore_rt_sigframe(tst, (struct rt_sigframe *)rsp, &sigNo);
 
-   VG_TRACK( die_mem_stack_signal, rsp, size );
+   VG_TRACK( die_mem_stack_signal, rsp - VGA_STACK_REDZONE_SIZE, size );
 
    if (VG_(clo_trace_signals))
       VG_(message)(
diff --git a/coregrind/m_sigframe/sigframe-x86-linux.c b/coregrind/m_sigframe/sigframe-x86-linux.c
index b0c60a9a33..1255794f81 100644
--- a/coregrind/m_sigframe/sigframe-x86-linux.c
+++ b/coregrind/m_sigframe/sigframe-x86-linux.c
@@ -425,7 +425,7 @@ static Bool extend ( ThreadState *tst, Addr addr, SizeT size )
 
    /* For tracking memory events, indicate the entire frame has been
       allocated. */
-   VG_TRACK( new_mem_stack_signal, addr, size );
+   VG_TRACK( new_mem_stack_signal, addr - VGA_STACK_REDZONE_SIZE, size );
 
    return True;
 }
@@ -682,7 +682,7 @@ void VG_(sigframe_destroy)( ThreadId tid, Bool isRT )
    else
       size = restore_rt_sigframe(tst, (struct rt_sigframe *)esp, &sigNo);
 
-   VG_TRACK( die_mem_stack_signal, esp, size );
+   VG_TRACK( die_mem_stack_signal - VGA_STACK_REDZONE_SIZE, esp, size );
 
    if (VG_(clo_trace_signals))
       VG_(message)(
diff --git a/coregrind/vg_signals.c b/coregrind/vg_signals.c
index f8f4fc8a5f..100a5bae96 100644
--- a/coregrind/vg_signals.c
+++ b/coregrind/vg_signals.c
@@ -474,6 +474,10 @@ void VG_(do_sys_sigaltstack) ( ThreadId tid )
 	 VG_(threads)[tid].altstack.ss_sp    = ss->ss_sp;
 	 VG_(threads)[tid].altstack.ss_size  = ss->ss_size;
 	 VG_(threads)[tid].altstack.ss_flags = 0;
+
+         VG_TRACK( new_mem_stack_signal,
+                   ss->ss_sp + ss->ss_size - VGA_STACK_REDZONE_SIZE,
+                   VGA_STACK_REDZONE_SIZE );
       }
    }
    SET_SYSCALL_RETVAL(tid, 0);