Author: branden
Date: 2003-08-27 04:18:11 -0500 (Wed, 27 Aug 2003)
New Revision: 445
Modified:
trunk/debian/changelog
trunk/debian/patches/000_stolen_from_HEAD.diff
trunk/debian/patches/067_nonexecutable_malloced_mem.diff
Log:
Backport support for new IA-64 relocation types from post-4.3.0 CVS
HEAD (thanks, Matthew Wilcox). (Closes: #206929)
- debian/patches/000_stolen_from_HEAD.diff: updated
- debian/patches/067_nonexecutable_malloced_mem.diff: resync
Modified: trunk/debian/changelog
===================================================================
--- trunk/debian/changelog 2003-08-27 07:53:29 UTC (rev 444)
+++ trunk/debian/changelog 2003-08-27 09:18:11 UTC (rev 445)
@@ -58,8 +58,13 @@
* debian/po/fr.po: updated French translations (thanks, Christian Perrier)
(Closes: #207239)
- -- Branden Robinson <[EMAIL PROTECTED]> Wed, 27 Aug 2003 02:50:39 -0500
+ * Backport support for new IA-64 relocation types from post-4.3.0 CVS
+ HEAD (thanks, Matthew Wilcox). (Closes: #206929)
+ - patch #000_stolen_from_HEAD: updated
+ - patch #067: resync
+ -- Branden Robinson <[EMAIL PROTECTED]> Wed, 27 Aug 2003 04:16:02 -0500
+
xfree86 (4.2.1-10) unstable; urgency=medium
* patch #000_stolen_from_HEAD_xlib: fix for buffer overflow in
Modified: trunk/debian/patches/000_stolen_from_HEAD.diff
===================================================================
--- trunk/debian/patches/000_stolen_from_HEAD.diff 2003-08-27 07:53:29 UTC (rev
444)
+++ trunk/debian/patches/000_stolen_from_HEAD.diff 2003-08-27 09:18:11 UTC (rev
445)
@@ -232,6 +232,10 @@
+ Skip unexpected data in QueryFormats. Deal with broken X servers a bit
better. (Keith Packard)
+(xc/programs/Xserver/hw/xfree86/loader/elfloader.c):
+ + Backport support for new IA-64 relocation types from post-4.3.0 CVS
+ HEAD. (Matthew Wilcox)
+
Index: xc/nls/XI18N_OBJS/Imakefile
===================================================================
RCS file: /cvs/xc/nls/XI18N_OBJS/Imakefile,v
@@ -3035,91 +3039,6 @@
#define R_ALPHA_IMMED_GP_HI32 20
#define R_ALPHA_IMMED_SCN_HI32 21
#define R_ALPHA_IMMED_BR_HI32 22
---- xc/programs/Xserver/hw/xfree86/loader/elfloader.c.orig 2002-01-14
13:16:52.000000000 -0500
-+++ xc/programs/Xserver/hw/xfree86/loader/elfloader.c 2003-02-20 01:06:05.000000000
-0500
-@@ -1103,7 +1106,9 @@
- int force;
- {
- unsigned char *secp = elffile->saddr[secn];
-+#if !defined(__ia64__)
- unsigned int *dest32; /* address of the 32 bit place being modified */
-+#endif
- #if defined(__powerpc__) || defined(__sparc__)
- unsigned short *dest16; /* address of the 16 bit place being modified */
- #endif
-@@ -1113,6 +1118,7 @@
- #if defined(__alpha__)
- unsigned int *dest32h; /* address of the high 32 bit place being modified */
- unsigned long *dest64;
-+ unsigned short *dest16;
- #endif
- #if defined(__ia64__)
- unsigned long *dest64;
-@@ -1376,6 +1382,51 @@
- ELFDEBUG( "*dest32=%8.8x\n", *dest32 );
- #endif
- break;
-+
-+ case R_ALPHA_GPRELLOW:
-+ {
-+ dest64=(unsigned long *)(secp+rel->r_offset);
-+ dest16=(unsigned short *)dest64;
-+
-+ symval += rel->r_addend;
-+ symval = ((unsigned char *)symval)-((unsigned char *)elffile->got);
-+
-+ *dest16=symval;
-+ break;
-+ }
-+ case R_ALPHA_GPRELHIGH:
-+ {
-+ dest64=(unsigned long *)(secp+rel->r_offset);
-+ dest16=(unsigned short *)dest64;
-+
-+ symval += rel->r_addend;
-+ symval = ((unsigned char *)symval)-((unsigned char *)elffile->got);
-+ symval = ((long)symval >> 16) + ((symval >> 15) & 1);
-+ if( (long)symval > 0x7fff ||
-+ (long)symval < -(long)0x8000 ) {
-+ FatalError("R_ALPHA_GPRELHIGH symval-got is too large for %s:%lx\n",
-+ ElfGetSymbolName(elffile,ELF_R_SYM(rel->r_info)),symval);
-+ }
-+
-+ *dest16=symval;
-+ break;
-+ }
-+ case R_ALPHA_GPREL16:
-+ {
-+ dest64=(unsigned long *)(secp+rel->r_offset);
-+ dest16=(unsigned short *)dest64;
-+
-+ symval += rel->r_addend;
-+ symval = ((unsigned char *)symval)-((unsigned char *)elffile->got);
-+ if( (long)symval > 0x7fff ||
-+ (long)symval < -(long)0x8000 ) {
-+ FatalError("R_ALPHA_GPREL16 symval-got is too large for %s:%lx\n",
-+ ElfGetSymbolName(elffile,ELF_R_SYM(rel->r_info)),symval);
-+ }
-+
-+ *dest16=symval;
-+ break;
-+ }
-
- #endif /* alpha */
- #if defined(__mc68000__)
-@@ -2834,9 +2897,11 @@
- ELFCollectSections(elffile, 0, &totalsize, &maxalign);
-
- if( elffile->straddr == NULL || elffile->strsize == 0 ) {
-+#if 0
- ErrorF("No symbols found in this module\n");
-+#endif
- ELFUnloadModule(elffile);
-- return NULL;
-+ return (void *) -1L;
- }
-
- /*
--- xc/programs/Xserver/hw/xfree86/loader/loader.c.orig 2001-10-27
22:33:59.000000000 -0500
+++ xc/programs/Xserver/hw/xfree86/loader/loader.c 2003-02-20 01:06:07.000000000
-0500
@@ -838,6 +887,7 @@
@@ -4937,3 +4856,333 @@
UnlockDisplay (dpy);
SyncHandle ();
Xfree (xData);
+--- xc/programs/Xserver/hw/xfree86/loader/elfloader.c~ 2003-08-27 01:52:53.000000000
-0500
++++ xc/programs/Xserver/hw/xfree86/loader/elfloader.c 2003-08-27 01:53:10.000000000
-0500
+@@ -54,6 +54,69 @@
+ #endif
+ */
+
++#if defined(__ia64__)
++
++/*
++ * R_IA64_LTOFF22X and R_IA64_LDXMOV are relocation optimizations for
++ * IA64. Conforming implementations must recognize them and may either
++ * implement the optimization or may fallback to previous
++ * non-optimized behavior by treating R_IA64_LTOFF22X as a
++ * R_IA64_LTOFF22 and ignoring R_IA64_LDXMOV. The
++ * IA64_LDX_OPTIMIZATION conditional controls the fallback behavior,
++ * if defined the optimizations are performed.
++ *
++ * To implement the optimization we want to change is the sequence on
++ * the left to that on the right, without regard to any intervening
++ * instructions:
++ *
++ * 1) addl [EMAIL PROTECTED](var),gp ==> addl [EMAIL PROTECTED](var),gp
++ * 2) ld8 t2=[t1] ==> mov t2=t1
++ * 3) ld8 loc0=[t2] ==> ld8 loc0=[t2]
++ *
++ * The relocations that match the above instructions are:
++ *
++ * 1) R_IA64_LTOFF22 ==> R_IA64_LTOFF22X
++ * 2) -- ==> R_IA64_LDXMOV
++ * 3) -- ==> --
++ *
++ * First lets look at left hand column to understand the original
++ * mechanism. The virtual address of a symbol is stored in the GOT,
++ * when that symbol is referenced the following sequence occurs,
++ * instruction 1 loads the address of the GOT entry containing the
++ * virtural address of the symbol into t1. Instruction 2 loads the
++ * virtual address of the symbol into t2 by dereferencing t1. Finally
++ * the symbol is loaded in instruction 3 by dereferencing its virtual
++ * address in t2.
++ *
++ * The optimization that LTOFF22X/LDXMOV introduces is based on the
++ * observation we are doing an extra load (instruction 2) if we can
++ * generate the virtual address for the symbol without doing a lookup in
++ * the GOT. This is possible if the virtual address of the symbol can be
++ * computed via GP relative addressing. In other words the virtual
++ * address of the symbol is a fixed offset from the GP. This fixed offset
++ * must be within the limits of the signed 22 bit immediate offset in the
++ * ld8 instruction, otherwise the original indirect GOT lookup must be
++ * performed (LTOFF22).
++ *
++ * If we can use GP relative addressing for the symbol then the
++ * instruction that loaded the virtual address of the symbol into t2 must
++ * also be patched, hence the introduction of the LDXMOV relocation. The
++ * LDXMOV essentially turns the GOT lookup into a no-op by changing the
++ * ld8 into a register move that preserves the register location of the
++ * symbol's virtual address (e.g. t2).
++ *
++ * The important point to recognize when implementing the LTOFF22X/LDXMOV
++ * optimization is that relocations are interdependent, the LDXMOV is
++ * only applied if the LTOFF22X is applied. It is also worth noting that
++ * there is no relationship between LDXMOV relocations and LTOFF22X in
++ * the ELF relocation section other than they share the same
++ * symbol+addend value.
++ */
++
++#define IA64_LDX_OPTIMIZATION 1
++#endif
++
++
+ #ifndef UseMMAP
+ #if defined (__ia64__) || defined (__sparc__)
+ #define MergeSectionAlloc
+@@ -289,7 +352,8 @@
+ static void ELFCreatePLT(ELFModulePtr);
+ enum ia64_operand {
+ IA64_OPND_IMM22,
+- IA64_OPND_TGT25C
++ IA64_OPND_TGT25C,
++ IA64_OPND_LDXMOV
+ };
+ static void IA64InstallReloc(unsigned long *, int, enum ia64_operand, long);
+ #endif
+@@ -1072,6 +1136,25 @@
+ if (value << 39 >> 39 != value || (value & 0xf))
+ ErrorF("Relocation %016lx truncated to fit into TGT25C\n", value);
+ break;
++#ifdef IA64_LDX_OPTIMIZATION
++ case IA64_OPND_LDXMOV:
++ /*
++ * Convert "ld8 t2=[t1]" to "mov t2=t1" which is really "add t2=0,t1"
++ * Mask all but the r3,r1,qp fields,
++ * then OR in the ALU opcode = 8 into the opcode field [40:37]
++ *
++ * Mask for the r3,r1,qp bit fields [26:20][12:6][5:0] = 0x7f01fff,
++ * This mask negated only within the 41 bit wide instruction and
++ * shifted left by 5 for the bundle template is 0x3FFF01FC0000
++ *
++ * opcode field [40:37] with a value of 8 is 0x10000000000
++ * shifted left by 5 for the bundle template is 0x200000000000
++ *
++ */
++ data &= ~(0x3FFF01FC0000 << slot);
++ data |= (0x200000000000 << slot);
++ break;
++#endif
+ default:
+ FatalError("Unhandled operand in IA64InstallReloc()\n");
+ }
+@@ -1103,7 +1186,9 @@
+ int force;
+ {
+ unsigned char *secp = elffile->saddr[secn];
++#if !defined(__ia64__)
+ unsigned int *dest32; /* address of the 32 bit place being modified */
++#endif
+ #if defined(__powerpc__) || defined(__sparc__)
+ unsigned short *dest16; /* address of the 16 bit place being modified */
+ #endif
+@@ -1113,6 +1198,7 @@
+ #if defined(__alpha__)
+ unsigned int *dest32h; /* address of the high 32 bit place being modified */
+ unsigned long *dest64;
++ unsigned short *dest16;
+ #endif
+ #if defined(__ia64__)
+ unsigned long *dest64;
+@@ -1376,6 +1462,51 @@
+ ELFDEBUG( "*dest32=%8.8x\n", *dest32 );
+ #endif
+ break;
++
++ case R_ALPHA_GPRELLOW:
++ {
++ dest64=(unsigned long *)(secp+rel->r_offset);
++ dest16=(unsigned short *)dest64;
++
++ symval += rel->r_addend;
++ symval = ((unsigned char *)symval)-((unsigned char *)elffile->got);
++
++ *dest16=symval;
++ break;
++ }
++ case R_ALPHA_GPRELHIGH:
++ {
++ dest64=(unsigned long *)(secp+rel->r_offset);
++ dest16=(unsigned short *)dest64;
++
++ symval += rel->r_addend;
++ symval = ((unsigned char *)symval)-((unsigned char *)elffile->got);
++ symval = ((long)symval >> 16) + ((symval >> 15) & 1);
++ if( (long)symval > 0x7fff ||
++ (long)symval < -(long)0x8000 ) {
++ FatalError("R_ALPHA_GPRELHIGH symval-got is too large for %s:%lx\n",
++ ElfGetSymbolName(elffile,ELF_R_SYM(rel->r_info)),symval);
++ }
++
++ *dest16=symval;
++ break;
++ }
++ case R_ALPHA_GPREL16:
++ {
++ dest64=(unsigned long *)(secp+rel->r_offset);
++ dest16=(unsigned short *)dest64;
++
++ symval += rel->r_addend;
++ symval = ((unsigned char *)symval)-((unsigned char *)elffile->got);
++ if( (long)symval > 0x7fff ||
++ (long)symval < -(long)0x8000 ) {
++ FatalError("R_ALPHA_GPREL16 symval-got is too large for %s:%lx\n",
++ ElfGetSymbolName(elffile,ELF_R_SYM(rel->r_info)),symval);
++ }
++
++ *dest16=symval;
++ break;
++ }
+
+ #endif /* alpha */
+ #if defined(__mc68000__)
+@@ -1903,6 +2034,9 @@
+ #endif
+ /* FALLTHROUGH */
+ case R_IA64_LTOFF22:
++#ifndef IA64_LDX_OPTIMIZATION
++ case R_IA64_LTOFF22X: /* If not implementing LDXMOV optimization treat
LTOFF22X as LTOFF22 */
++#endif
+ {
+ ELFGotEntryPtr gotent;
+ dest128=(unsigned long *)(secp+(rel->r_offset&~3));
+@@ -2028,6 +2162,18 @@
+ ia64_flush_cache(dest64);
+ break;
+
++ case R_IA64_PCREL64LSB:
++ dest64=(unsigned long *)(secp+rel->r_offset);
++#ifdef ELFDEBUG
++ ELFDEBUG( "R_IA64_PCREL64LSB %s\t",
++ ElfGetSymbolName(elffile,ELF_R_SYM(rel->r_info)) );
++ ELFDEBUG( "secp=%lx\t", secp );
++ ELFDEBUG( "symval=%lx\t", symval );
++ ELFDEBUG( "dest64=%lx\n", dest64 );
++#endif
++ *dest64 = symval + rel->r_addend - (unsigned long)dest64;
++ break;
++
+ case R_IA64_GPREL22:
+ dest128=(unsigned long *)(secp+(rel->r_offset&~3));
+ #ifdef ELFDEBUG
+@@ -2043,6 +2189,90 @@
+ symval + rel->r_addend - (long)elffile->got);
+ break;
+
++#ifdef IA64_LDX_OPTIMIZATION
++ case R_IA64_LTOFF22X:
++ {
++ ELFGotEntryPtr gotent;
++ long gp_offset = symval+rel->r_addend-(long)elffile->got;
++ dest128=(unsigned long *)(secp+(rel->r_offset&~3));
++
++# ifdef ELFDEBUG
++ ELFDEBUG( "R_IA64_LTOFF22X %s\t",
ElfGetSymbolName(elffile,ELF_R_SYM(rel->r_info)) );
++ ELFDEBUG( "secp=%lx\t", secp );
++ ELFDEBUG( "symval=%lx\t", symval );
++ ELFDEBUG( "dest128=%lx\t", dest128 );
++ ELFDEBUG( "slot=%d\n", rel->r_offset & 3);
++# endif
++
++ if (gp_offset << 42 >> 42 != gp_offset) {
++ /* Offset is too large for LTOFF22X,
++ * fallback to using GOT lookup, e.g. LTOFF22.
++ * Note: LDXMOV will fail the same test and will be ignored. */
++
++# ifdef ELFDEBUG
++ ELFDEBUG( "gp_offset=%ld too large, using GOT instead (LTOFF22)\n",
gp_offset);
++# endif
++
++ for (gotent=elffile->got_entries;gotent;gotent=gotent->next) {
++ if ( ELF_R_SYM(gotent->rel->r_info) == ELF_R_SYM(rel->r_info) &&
++ gotent->rel->r_addend == rel->r_addend )
++ break;
++ }
++
++ /* Set the address in the GOT */
++ if( gotent ) {
++ *(unsigned long *)(elffile->got+gotent->offset) = symval+rel->r_addend;
++# ifdef ELFDEBUG
++ ELFDEBUG("Setting gotent[%x]=%lx\n", gotent->offset,
symval+rel->r_addend);
++# endif
++ if ((gotent->offset & 0xffe00000) != 0)
++ FatalError("\nR_IA64_LTOFF22 offset %x too large\n", gotent->offset);
++ } else {
++ FatalError("\nCould not find GOT entry\n");
++ }
++ gp_offset = gotent->offset; /* Use GOT lookup */
++ } else {
++# ifdef ELFDEBUG
++ ELFDEBUG( "using gp_offset=%ld (LTOFF22X)", gp_offset);
++# endif
++ }
++ IA64InstallReloc(dest128, rel->r_offset & 3, IA64_OPND_IMM22, gp_offset);
++ }
++ break;
++#endif
++
++ case R_IA64_LDXMOV:
++# ifdef ELFDEBUG
++ ELFDEBUG( "R_IA64_LDXMOV %s\t",
ElfGetSymbolName(elffile,ELF_R_SYM(rel->r_info)) );
++# endif
++
++#ifdef IA64_LDX_OPTIMIZATION
++ {
++ long gp_offset = symval+rel->r_addend-(long)elffile->got;
++ dest128=(unsigned long *)(secp+(rel->r_offset&~3));
++
++ if (gp_offset << 42 >> 42 != gp_offset) {
++ /* Offset is too large for LTOFF22X, ignore this relocation */
++# ifdef ELFDEBUG
++ ELFDEBUG( "offset = %ld too large, ignoring\n", gp_offset);
++# endif
++ } else {
++
++# ifdef ELFDEBUG
++ ELFDEBUG( "secp=%lx\t", secp );
++ ELFDEBUG( "symval=%lx\t", symval );
++ ELFDEBUG( "dest128=%lx\t", dest128 );
++ ELFDEBUG( "slot=%d\n", rel->r_offset & 3);
++ ELFDEBUG( "offset=%ld\n", gp_offset);
++ ELFDEBUG( "*dest128=[%016lx%016lx]\n", dest128[1], dest128[0]);
++# endif
++
++ IA64InstallReloc(dest128, rel->r_offset & 3, IA64_OPND_LDXMOV, 0);
++ }
++ }
++#endif
++ break;
++
+ #endif
+
+ #if defined(__arm__)
+@@ -2127,7 +2357,7 @@
+ }
+ #endif
+ #if defined(__ia64__)
+- if (ELF_R_TYPE(rel[i].r_info) == R_IA64_LTOFF22
++ if (ELF_R_TYPE(rel[i].r_info) == R_IA64_LTOFF22 || ELF_R_TYPE(rel[i].r_info)
== R_IA64_LTOFF22X
+ || ELF_R_TYPE(rel[i].r_info) == R_IA64_LTOFF_FPTR22) {
+ ElfAddGOT(elffile,&rel[i]);
+ }
+@@ -2271,7 +2501,8 @@
+ || !strcmp(lookup[i].symName, ".comment")
+ || !strcmp(lookup[i].symName, ".note")
+ ) {
+- memmove(&(lookup[i]), &(lookup[i+1]), (l-- - i) * sizeof (LOOKUP));
++ memmove(&(lookup[i]), &(lookup[i+1]), (l - i) * sizeof (LOOKUP));
++ memmove(&(secttable[i]), &(secttable[i+1]), (l-- - i) * sizeof (unsigned
short));
+ }
+ }
+ return lookup;
+@@ -2834,9 +3065,11 @@
+ ELFCollectSections(elffile, 0, &totalsize, &maxalign);
+
+ if( elffile->straddr == NULL || elffile->strsize == 0 ) {
++#if 0
+ ErrorF("No symbols found in this module\n");
++#endif
+ ELFUnloadModule(elffile);
+- return NULL;
++ return (void *) -1L;
+ }
+
+ /*
Modified: trunk/debian/patches/067_nonexecutable_malloced_mem.diff
===================================================================
--- trunk/debian/patches/067_nonexecutable_malloced_mem.diff 2003-08-27 07:53:29
UTC (rev 444)
+++ trunk/debian/patches/067_nonexecutable_malloced_mem.diff 2003-08-27 09:18:11
UTC (rev 445)
@@ -12,8 +12,8 @@
Not submitted upstream yet.
---- xc/programs/Xserver/hw/xfree86/loader/elfloader.c.orig Mon Apr 8 14:19:55
2002
-+++ xc/programs/Xserver/hw/xfree86/loader/elfloader.c Mon Apr 8 14:19:57 2002
+--- xc/programs/Xserver/hw/xfree86/loader/elfloader.c~ 2003-08-27 01:56:18.000000000
-0500
++++ xc/programs/Xserver/hw/xfree86/loader/elfloader.c 2003-08-27 01:56:25.000000000
-0500
@@ -23,6 +23,9 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
@@ -24,7 +24,7 @@
#include <unistd.h>
#include <stdlib.h>
#ifdef __QNX__
-@@ -2378,6 +2381,18 @@
+@@ -2561,6 +2564,18 @@
ELFDEBUG(".text starts at %lx\n", elffile->text );
#endif
elffile->txtsize=SecSize(i);
--
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