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2000-07-29  Greg McGary  <greg@mcgary.org>

	* Rules (test-bp-inputs, make-test-out): New variables.
	($(objpfx)%-bp.out): New rule.
	($(objpfx)%.out): Rewrite in terms of new variables.

	* libio/iovswscanf.c (vswscanf): Pass _IO_FILE_plus pointer to
	internal function that uses vtable.
	* libio/vsnprintf.c (_IO_vsnprintf): Likewise.
	* libio/vswprintf.c (_IO_vswprintf): Likewise.

	* malloc/malloc.c (mem2chunk): Define in terms of chunk_at_offset.
	(malloc_extend_top): Convert brk to chunk using chunk_at_offset.
	(chunk_align): Likewise.

	* time/asctime.c (ab_day_name, ab_month_name): Rewrite expression
	in a way that conforms to decl, and avoids spurious bounds violation.

	* sysdeps/arm/frame.h (struct layout): Make pointers __unbounded.
	* sysdeps/generic/frame.h: Likewise.
	* sysdeps/generic/backtrace.c (ADVANCE_STACK_FRAME): Wrap bounds
	around return value.
	(__backtrace): Qualify frame-pointer chain and return address
	pointers as __unbounded.  Wrap bounds around variable `current'.
	* sysdeps/generic/segfault.c (ADVANCE_STACK_FRAME): Wrap bounds
	around return value.
	(catch_segfault): Qualify frame-pointer chain and return address
	pointers as __unbounded.  Wrap bounds around variable `current'.
	* sysdeps/i386/backtrace.c (struct layout): Make pointers __unbounded.
	(ADVANCE_STACK_FRAME): Wrap bounds around return value.
	* sysdeps/powerpc/backtrace.c (struct layout): Make pointers __unbounded.
	(__backtrace): Qualify frame-pointer chain and return address
	pointers as __unbounded.  Wrap bounds around variable `current'.

	* sysdeps/i386/addmul_1.S: s2_limb is scalar so remove bounds check.
	* sysdeps/i386/mul_1.S: Likewise.
	* sysdeps/i386/submul_1.S: Likewise.
	* sysdeps/i386/i586/addmul_1.S: Likewise.
	* sysdeps/i386/i586/mul_1.S: Add bounds checks.
	* sysdeps/i386/i586/submul_1.S: Likewise.
This commit is contained in:
Greg McGary
2000-07-29 08:11:47 +00:00
parent f2897624e2
commit 41d998a683
13 changed files with 92 additions and 41 deletions
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14
sysdeps/generic/segfault.c
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@@ -1,5 +1,5 @@
/* Catch segmentation faults and print backtrace.
Copyright (C) 1998, 1999 Free Software Foundation, Inc.
Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
@@ -28,6 +28,8 @@
#include <unistd.h>
#include <stdio-common/_itoa.h>
#include <bp-checks.h>
/* Get the definition of "struct layout". */
#include <frame.h>
@@ -69,7 +71,7 @@ extern void *__libc_stack_end;
/* By default assume the `next' pointer in struct layout points to the
next struct layout. */
#ifndef ADVANCE_STACK_FRAME
# define ADVANCE_STACK_FRAME(next) ((struct layout *) (next))
# define ADVANCE_STACK_FRAME(next) BOUNDED_1 ((struct layout *) (next))
#endif
/* We'll use tis a lot. */
@@ -103,8 +105,8 @@ static void
catch_segfault (int signal, SIGCONTEXT ctx)
{
struct layout *current;
void *top_frame;
void *top_stack;
void *__unbounded top_frame;
void *__unbounded top_stack;
int fd;
void **arr;
size_t cnt;
@@ -135,7 +137,7 @@ catch_segfault (int signal, SIGCONTEXT ctx)
/* First count how many entries we'll have. */
cnt = 1;
current = (struct layout *) top_frame;
current = BOUNDED_1 ((struct layout *) top_frame);
while (!((void *) current INNER_THAN top_stack
|| !((void *) current INNER_THAN __libc_stack_end)))
{
@@ -149,7 +151,7 @@ catch_segfault (int signal, SIGCONTEXT ctx)
/* First handle the program counter from the structure. */
arr[0] = GET_PC (ctx);
current = (struct layout *) top_frame;
current = BOUNDED_1 ((struct layout *) top_frame);
cnt = 1;
while (!((void *) current INNER_THAN top_stack
|| !((void *) current INNER_THAN __libc_stack_end)))