aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/i386/i586
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/i386/i586')
-rw-r--r--sysdeps/i386/i586/add_n.S13
-rw-r--r--sysdeps/i386/i586/addmul_1.S13
-rw-r--r--sysdeps/i386/i586/bzero.S2
-rw-r--r--sysdeps/i386/i586/lshift.S11
-rw-r--r--sysdeps/i386/i586/memcpy.S7
-rw-r--r--sysdeps/i386/i586/mempcpy.S2
-rw-r--r--sysdeps/i386/i586/memset.S10
-rw-r--r--sysdeps/i386/i586/rshift.S11
-rw-r--r--sysdeps/i386/i586/strchr.S16
-rw-r--r--sysdeps/i386/i586/strcpy.S9
-rw-r--r--sysdeps/i386/i586/strlen.S9
-rw-r--r--sysdeps/i386/i586/sub_n.S13
12 files changed, 84 insertions, 32 deletions
diff --git a/sysdeps/i386/i586/add_n.S b/sysdeps/i386/i586/add_n.S
index 7e30cac729..6ed5055bf4 100644
--- a/sysdeps/i386/i586/add_n.S
+++ b/sysdeps/i386/i586/add_n.S
@@ -20,6 +20,7 @@
#include "sysdep.h"
#include "asm-syntax.h"
+#include "bp-sym.h"
#include "bp-asm.h"
#define PARMS LINKAGE+16 /* space for 4 saved regs */
@@ -29,7 +30,7 @@
#define SIZE S2+PTR_SIZE
.text
-ENTRY(__mpn_add_n)
+ENTRY (BP_SYM (__mpn_add_n))
ENTER
pushl %edi
@@ -41,7 +42,13 @@ ENTRY(__mpn_add_n)
movl S1(%esp),%esi
movl S2(%esp),%ebx
movl SIZE(%esp),%ecx
-
+#if __BOUNDED_POINTERS__
+ shll $2, %ecx /* convert limbs to bytes */
+ CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %ecx)
+ CHECK_BOUNDS_BOTH_WIDE (%esi, S1(%esp), %ecx)
+ CHECK_BOUNDS_BOTH_WIDE (%ebx, S2(%esp), %ecx)
+ shrl $2, %ecx
+#endif
movl (%ebx),%ebp
decl %ecx
@@ -127,4 +134,4 @@ L(end2):
LEAVE
ret
-END(__mpn_add_n)
+END (BP_SYM (__mpn_add_n))
diff --git a/sysdeps/i386/i586/addmul_1.S b/sysdeps/i386/i586/addmul_1.S
index 06cdbe1c6d..2cc17ddf90 100644
--- a/sysdeps/i386/i586/addmul_1.S
+++ b/sysdeps/i386/i586/addmul_1.S
@@ -20,6 +20,7 @@
#include "sysdep.h"
#include "asm-syntax.h"
+#include "bp-sym.h"
#include "bp-asm.h"
#define PARMS LINKAGE+16 /* space for 4 saved regs */
@@ -34,7 +35,7 @@
#define s2_limb ebx
.text
-ENTRY(__mpn_addmul_1)
+ENTRY (BP_SYM (__mpn_addmul_1))
ENTER
pushl %edi
@@ -46,7 +47,13 @@ ENTRY(__mpn_addmul_1)
movl S1(%esp), %s1_ptr
movl SIZE(%esp), %size
movl S2LIMB(%esp), %s2_limb
-
+#if __BOUNDED_POINTERS__
+ shll $2, %size /* convert limbs to bytes */
+ CHECK_BOUNDS_BOTH_WIDE (%res_ptr, RES(%esp), %size)
+ CHECK_BOUNDS_BOTH_WIDE (%s1_ptr, S1(%esp), %size)
+ CHECK_BOUNDS_BOTH_WIDE (%s2_limb, S2LIMB(%esp), %size)
+ shrl $2, %size
+#endif
leal (%res_ptr,%size,4), %res_ptr
leal (%s1_ptr,%size,4), %s1_ptr
negl %size
@@ -80,4 +87,4 @@ L(oop): adcl $0, %ebp
LEAVE
ret
#undef size
-END(__mpn_addmul_1)
+END (BP_SYM (__mpn_addmul_1))
diff --git a/sysdeps/i386/i586/bzero.S b/sysdeps/i386/i586/bzero.S
index 84d2f709c1..220aa47c3f 100644
--- a/sysdeps/i386/i586/bzero.S
+++ b/sysdeps/i386/i586/bzero.S
@@ -1,3 +1,3 @@
#define memset __bzero
#include <sysdeps/i386/i586/memset.S>
-weak_alias (__bzero, bzero)
+weak_alias (BP_SYM (__bzero), BP_SYM (bzero))
diff --git a/sysdeps/i386/i586/lshift.S b/sysdeps/i386/i586/lshift.S
index 2a44150377..5d753b0bb3 100644
--- a/sysdeps/i386/i586/lshift.S
+++ b/sysdeps/i386/i586/lshift.S
@@ -19,6 +19,7 @@
#include "sysdep.h"
#include "asm-syntax.h"
+#include "bp-sym.h"
#include "bp-asm.h"
#define PARMS LINKAGE+16 /* space for 4 saved regs */
@@ -28,7 +29,7 @@
#define CNT SIZE+4
.text
-ENTRY(__mpn_lshift)
+ENTRY (BP_SYM (__mpn_lshift))
ENTER
pushl %edi
@@ -40,6 +41,12 @@ ENTRY(__mpn_lshift)
movl S(%esp),%esi
movl SIZE(%esp),%ebx
movl CNT(%esp),%ecx
+#if __BOUNDED_POINTERS__
+ shll $2, %ebx /* convert limbs to bytes */
+ CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %ebx)
+ CHECK_BOUNDS_BOTH_WIDE (%esi, S(%esp), %ebx)
+ shrl $2, %ebx
+#endif
/* We can use faster code for shift-by-1 under certain conditions. */
cmp $1,%ecx
@@ -222,4 +229,4 @@ L(L1): movl %edx,(%edi) /* store last limb */
LEAVE
ret
-END(__mpn_lshift)
+END (BP_SYM (__mpn_lshift))
diff --git a/sysdeps/i386/i586/memcpy.S b/sysdeps/i386/i586/memcpy.S
index ed35b48ff6..514f82e883 100644
--- a/sysdeps/i386/i586/memcpy.S
+++ b/sysdeps/i386/i586/memcpy.S
@@ -20,6 +20,7 @@
#include <sysdep.h>
#include "asm-syntax.h"
+#include "bp-sym.h"
#include "bp-asm.h"
/* BEWARE: `#ifdef memcpy' means that memcpy is redefined as `mempcpy',
@@ -34,7 +35,7 @@
#define LEN SRC+PTR_SIZE
.text
-ENTRY (memcpy)
+ENTRY (BP_SYM (memcpy))
ENTER
pushl %edi
@@ -43,6 +44,8 @@ ENTRY (memcpy)
movl DEST(%esp), %edi
movl SRC(%esp), %esi
movl LEN(%esp), %ecx
+ CHECK_BOUNDS_BOTH_WIDE (%edi, DEST(%esp), %ecx)
+ CHECK_BOUNDS_BOTH_WIDE (%esi, SRC(%esp), %ecx)
movl %edi, %eax
/* We need this in any case. */
@@ -112,4 +115,4 @@ L(1): rep; movsb
LEAVE
RET_PTR
-END (memcpy)
+END (BP_SYM (memcpy))
diff --git a/sysdeps/i386/i586/mempcpy.S b/sysdeps/i386/i586/mempcpy.S
index 03dc0789da..d4611c2a6f 100644
--- a/sysdeps/i386/i586/mempcpy.S
+++ b/sysdeps/i386/i586/mempcpy.S
@@ -1,4 +1,4 @@
#define memcpy __mempcpy
#include <sysdeps/i386/i586/memcpy.S>
-weak_alias (__mempcpy, mempcpy)
+weak_alias (BP_SYM (__mempcpy), BP_SYM (mempcpy))
diff --git a/sysdeps/i386/i586/memset.S b/sysdeps/i386/i586/memset.S
index 8b292e92fa..931832b566 100644
--- a/sysdeps/i386/i586/memset.S
+++ b/sysdeps/i386/i586/memset.S
@@ -21,6 +21,7 @@
#include <sysdep.h>
#include "asm-syntax.h"
+#include "bp-sym.h"
#include "bp-asm.h"
/* BEWARE: `#ifdef memset' means that memset is redefined as `bzero' */
@@ -37,18 +38,18 @@
#endif
.text
-ENTRY (memset)
+ENTRY (BP_SYM (memset))
ENTER
pushl %edi
movl DEST(%esp), %edi
movl LEN(%esp), %edx
+ CHECK_BOUNDS_BOTH_WIDE (%edi, DEST(%esp), %edx)
#if BZERO_P
xorl %eax, %eax /* we fill with 0 */
#else
movb CHR(%esp), %al
-
movb %al, %ah
movl %eax, %ecx
shll $16, %eax
@@ -101,7 +102,8 @@ L(2): shrl $2, %ecx /* convert byte count to longword count */
#if !BZERO_P
/* Load result (only if used as memset). */
- movl DEST(%esp), %eax
+ movl DEST(%esp), %eax /* start address of destination is result */
+ RETURN_BOUNDED_POINTER (DEST(%esp))
#endif
popl %edi
@@ -111,4 +113,4 @@ L(2): shrl $2, %ecx /* convert byte count to longword count */
#else
RET_PTR
#endif
-END (memset)
+END (BP_SYM (memset))
diff --git a/sysdeps/i386/i586/rshift.S b/sysdeps/i386/i586/rshift.S
index 00b4cb710e..e82f17555d 100644
--- a/sysdeps/i386/i586/rshift.S
+++ b/sysdeps/i386/i586/rshift.S
@@ -19,6 +19,7 @@
#include "sysdep.h"
#include "asm-syntax.h"
+#include "bp-sym.h"
#include "bp-asm.h"
#define PARMS LINKAGE+16 /* space for 4 saved regs */
@@ -28,7 +29,7 @@
#define CNT SIZE+4
.text
-ENTRY(__mpn_rshift)
+ENTRY (BP_SYM (__mpn_rshift))
ENTER
pushl %edi
@@ -40,6 +41,12 @@ ENTRY(__mpn_rshift)
movl S(%esp),%esi
movl SIZE(%esp),%ebx
movl CNT(%esp),%ecx
+#if __BOUNDED_POINTERS__
+ shll $2, %ebx /* convert limbs to bytes */
+ CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %ebx)
+ CHECK_BOUNDS_BOTH_WIDE (%esi, S(%esp), %ebx)
+ shrl $2, %ebx
+#endif
/* We can use faster code for shift-by-1 under certain conditions. */
cmp $1,%ecx
@@ -222,4 +229,4 @@ L(L1): movl %edx,(%edi) /* store last limb */
LEAVE
ret
-END(__mpn_rshift)
+END (BP_SYM (__mpn_rshift))
diff --git a/sysdeps/i386/i586/strchr.S b/sysdeps/i386/i586/strchr.S
index bf351f605e..bff1b8a84a 100644
--- a/sysdeps/i386/i586/strchr.S
+++ b/sysdeps/i386/i586/strchr.S
@@ -21,6 +21,7 @@
#include <sysdep.h>
#include "asm-syntax.h"
+#include "bp-sym.h"
#include "bp-asm.h"
/* This version is especially optimized for the i586 (and following?)
@@ -42,7 +43,7 @@
#define CHR STR+PTR_SIZE
.text
-ENTRY (strchr)
+ENTRY (BP_SYM (strchr))
ENTER
pushl %edi /* Save callee-safe registers. */
@@ -53,6 +54,7 @@ ENTRY (strchr)
movl STR(%esp), %eax
movl CHR(%esp), %edx
+ CHECK_BOUNDS_LOW (%eax, STR(%esp))
movl %eax, %edi /* duplicate string pointer for later */
xorl %ecx, %ecx /* clear %ecx */
@@ -279,7 +281,9 @@ L(5): subl $4, %eax /* adjust pointer */
incl %eax /* increment pointer */
-L(2): popl %ebp /* restore saved registers */
+L(2): CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb)
+ RETURN_BOUNDED_POINTER (STR(%esp))
+ popl %ebp /* restore saved registers */
popl %ebx
popl %esi
@@ -321,8 +325,8 @@ L(4): subl $4, %eax /* adjust pointer */
cmpb %dl, %ch /* fourth byte == C? */
je L(2) /* yes => return pointer */
-L(3): xorl %eax, %eax /* set return value = NULL */
-
+L(3): xorl %eax, %eax
+ RETURN_NULL_BOUNDED_POINTER
popl %ebp /* restore saved registers */
popl %ebx
@@ -331,7 +335,7 @@ L(3): xorl %eax, %eax /* set return value = NULL */
LEAVE
RET_PTR
-END (strchr)
+END (BP_SYM (strchr))
#undef index
-weak_alias (strchr, index)
+weak_alias (BP_SYM (strchr), BP_SYM (index))
diff --git a/sysdeps/i386/i586/strcpy.S b/sysdeps/i386/i586/strcpy.S
index a48fbb68f8..03c4e77354 100644
--- a/sysdeps/i386/i586/strcpy.S
+++ b/sysdeps/i386/i586/strcpy.S
@@ -20,6 +20,7 @@
#include <sysdep.h>
#include "asm-syntax.h"
+#include "bp-sym.h"
#include "bp-asm.h"
#define PARMS LINKAGE+12 /* space for 3 saved regs */
@@ -34,7 +35,7 @@
#define magic 0xfefefeff
.text
-ENTRY(STRCPY)
+ENTRY (BP_SYM (STRCPY))
ENTER
pushl %edi
@@ -43,6 +44,8 @@ ENTRY(STRCPY)
movl DEST(%esp), %edi
movl SRC(%esp), %esi
+ CHECK_BOUNDS_LOW (%edi, DEST(%esp))
+ CHECK_BOUNDS_LOW (%esi, SRC(%esp))
xorl %eax, %eax
leal -1(%esi), %ecx
@@ -142,15 +145,17 @@ L(4): movb %dl, (%edi)
L(end): movb %ah, (%edi)
L(end2):
+ /* GKM FIXME: check high bounds */
#ifdef USE_AS_STPCPY
movl %edi, %eax
#else
movl DEST(%esp), %eax
#endif
+ RETURN_BOUNDED_POINTER (DEST(%esp))
popl %ebx
popl %esi
popl %edi
LEAVE
RET_PTR
-END(STRCPY)
+END (BP_SYM (STRCPY))
diff --git a/sysdeps/i386/i586/strlen.S b/sysdeps/i386/i586/strlen.S
index e2771268ed..6af9da9c41 100644
--- a/sysdeps/i386/i586/strlen.S
+++ b/sysdeps/i386/i586/strlen.S
@@ -21,6 +21,7 @@
#include <sysdep.h>
#include "asm-syntax.h"
+#include "bp-sym.h"
#include "bp-asm.h"
/* This version is especially optimized for the i586 (and following?)
@@ -40,10 +41,11 @@
#define STR PARMS
.text
-ENTRY(strlen)
+ENTRY (BP_SYM (strlen))
ENTER
movl STR(%esp), %eax
+ CHECK_BOUNDS_LOW (%eax, STR(%esp))
movl $3, %edx /* load mask (= 3) */
andl %eax, %edx /* separate last two bits of address */
@@ -177,9 +179,10 @@ L(3): subl $4, %eax /* correct too early pointer increment */
incl %eax /* increment pointer */
-L(2): subl STR(%esp), %eax /* now compute the length as difference
+L(2): CHECK_BOUNDS_HIGH (%eax, STR(%esp), jb)
+ subl STR(%esp), %eax /* now compute the length as difference
between start and terminating NUL
character */
LEAVE
ret
-END (strlen)
+END (BP_SYM (strlen))
diff --git a/sysdeps/i386/i586/sub_n.S b/sysdeps/i386/i586/sub_n.S
index fcb13f114b..0b5de929d9 100644
--- a/sysdeps/i386/i586/sub_n.S
+++ b/sysdeps/i386/i586/sub_n.S
@@ -20,6 +20,7 @@
#include "sysdep.h"
#include "asm-syntax.h"
+#include "bp-sym.h"
#include "bp-asm.h"
#define PARMS LINKAGE+16 /* space for 4 saved regs */
@@ -29,7 +30,7 @@
#define SIZE S2+PTR_SIZE
.text
-ENTRY(__mpn_sub_n)
+ENTRY (BP_SYM (__mpn_sub_n))
ENTER
pushl %edi
@@ -41,7 +42,13 @@ ENTRY(__mpn_sub_n)
movl S1(%esp),%esi
movl S2(%esp),%ebx
movl SIZE(%esp),%ecx
-
+#if __BOUNDED_POINTERS__
+ shll $2, %ecx /* convert limbs to bytes */
+ CHECK_BOUNDS_BOTH_WIDE (%edi, RES(%esp), %ecx)
+ CHECK_BOUNDS_BOTH_WIDE (%esi, S1(%esp), %ecx)
+ CHECK_BOUNDS_BOTH_WIDE (%ebx, S2(%esp), %ecx)
+ shrl $2, %ecx
+#endif
movl (%ebx),%ebp
decl %ecx
@@ -127,4 +134,4 @@ L(end2):
LEAVE
ret
-END(__mpn_sub_n)
+END (BP_SYM (__mpn_sub_n))
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 22:28:08 +0000