Add x32 support to dynamic linker audit

10 files changed, 141 insertions, 36 deletions

diff --git a/ChangeLog b/ChangeLog
index b060f36..33bb4f8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,25 @@
+2012-03-21  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* elf/tst-auditmod1.c: Support la_x32_gnu_pltenter and
+	la_x32_gnu_pltexit.
+	(pltexit): Cast int_retval to ptrdiff_t.
+	* elf/tst-auditmod3b.c: Likewise.
+	* elf/tst-auditmod4b.c: Likewise.
+	* elf/tst-auditmod5b.c: Likewise.
+	* elf/tst-auditmod6b.c: Likewise.
+	* elf/tst-auditmod6c.c: Likewise.
+	* elf/tst-auditmod7b.c: Likewise.
+
+	* sysdeps/generic/ldsodefs.h (audit_ifaces): Add x32_gnu_pltenter
+	and x32_gnu_pltexit.
+
+	* sysdeps/x86_64/bits/link.h: Check __x86_64__ instead of
+	__ELF_NATIVE_CLASS.
+	(La_x32_regs): New macro.
+	(La_x32_retval): Likewise.
+	(la_x32_gnu_pltenter): New function prototype.
+	(la_x32_gnu_pltexit): Likewise.
+
 2012-03-21  Andreas Schwab  <schwab@linux-m68k.org>
 
 	* sysdeps/ieee754/ldbl-128ibm/e_powl.c (huge, tiny): Correct
diff --git a/elf/tst-auditmod1.c b/elf/tst-auditmod1.c
index 69da278..67fc758 100644
--- a/elf/tst-auditmod1.c
+++ b/elf/tst-auditmod1.c
@@ -109,10 +109,17 @@ la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
 # define La_retval La_i86_retval
 # define int_retval lrv_eax
 #elif defined __x86_64__
-# define pltenter la_x86_64_gnu_pltenter
-# define pltexit la_x86_64_gnu_pltexit
-# define La_regs La_x86_64_regs
-# define La_retval La_x86_64_retval
+# ifdef __LP64__
+#  define pltenter la_x86_64_gnu_pltenter
+#  define pltexit la_x86_64_gnu_pltexit
+#  define La_regs La_x86_64_regs
+#  define La_retval La_x86_64_retval
+# else
+#  define pltenter la_x32_gnu_pltenter
+#  define pltexit la_x32_gnu_pltexit
+#  define La_regs La_x32_regs
+#  define La_retval La_x32_retval
+# endif
 # define int_retval lrv_rax
 #elif defined __powerpc__ && __WORDSIZE == 32
 # define pltenter la_ppc32_gnu_pltenter
@@ -188,7 +195,8 @@ pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
 	 const char *symname)
 {
   printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
-	  symname, (long int) sym->st_value, ndx, outregs->int_retval);
+	  symname, (long int) sym->st_value, ndx,
+	  (ptrdiff_t) outregs->int_retval);
 
   return 0;
 }
diff --git a/elf/tst-auditmod3b.c b/elf/tst-auditmod3b.c
index 388ed6e..921eaca 100644
--- a/elf/tst-auditmod3b.c
+++ b/elf/tst-auditmod3b.c
@@ -105,10 +105,17 @@ la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
   return sym->st_value;
 }
 
-#define pltenter la_x86_64_gnu_pltenter
-#define pltexit la_x86_64_gnu_pltexit
-#define La_regs La_x86_64_regs
-#define La_retval La_x86_64_retval
+#ifdef __LP64__
+# define pltenter la_x86_64_gnu_pltenter
+# define pltexit la_x86_64_gnu_pltexit
+# define La_regs La_x86_64_regs
+# define La_retval La_x86_64_retval
+#else
+# define pltenter la_x32_gnu_pltenter
+# define pltexit la_x32_gnu_pltexit
+# define La_regs La_x32_regs
+# define La_retval La_x32_retval
+#endif
 #define int_retval lrv_rax
 
 #include <tst-audit.h>
@@ -140,7 +147,8 @@ pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
 	 const char *symname)
 {
   printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
-	  symname, (long int) sym->st_value, ndx, outregs->int_retval);
+	  symname, (long int) sym->st_value, ndx,
+	  (ptrdiff_t) outregs->int_retval);
 
   __m128i xmm = _mm_set1_epi32 (-1);
   asm volatile ("movdqa %0, %%xmm0" : : "x" (xmm) : "xmm0" );
diff --git a/elf/tst-auditmod4b.c b/elf/tst-auditmod4b.c
index 761d97c..75e8558 100644
--- a/elf/tst-auditmod4b.c
+++ b/elf/tst-auditmod4b.c
@@ -94,10 +94,17 @@ la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
   return sym->st_value;
 }
 
-#define pltenter la_x86_64_gnu_pltenter
-#define pltexit la_x86_64_gnu_pltexit
-#define La_regs La_x86_64_regs
-#define La_retval La_x86_64_retval
+#ifdef __LP64__
+# define pltenter la_x86_64_gnu_pltenter
+# define pltexit la_x86_64_gnu_pltexit
+# define La_regs La_x86_64_regs
+# define La_retval La_x86_64_retval
+#else
+# define pltenter la_x32_gnu_pltenter
+# define pltexit la_x32_gnu_pltexit
+# define La_regs La_x32_regs
+# define La_retval La_x32_retval
+#endif
 #define int_retval lrv_rax
 
 #include <tst-audit.h>
@@ -177,7 +184,8 @@ pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
 	 const char *symname)
 {
   printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
-	  symname, (long int) sym->st_value, ndx, outregs->int_retval);
+	  symname, (long int) sym->st_value, ndx,
+	  (ptrdiff_t) outregs->int_retval);
 
 #ifdef __AVX__
   if (check_avx () && strcmp (symname, "audit_test") == 0)
diff --git a/elf/tst-auditmod5b.c b/elf/tst-auditmod5b.c
index 7e1e941..d2443c8 100644
--- a/elf/tst-auditmod5b.c
+++ b/elf/tst-auditmod5b.c
@@ -95,10 +95,17 @@ la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
   return sym->st_value;
 }
 
-#define pltenter la_x86_64_gnu_pltenter
-#define pltexit la_x86_64_gnu_pltexit
-#define La_regs La_x86_64_regs
-#define La_retval La_x86_64_retval
+#ifdef __LP64__
+# define pltenter la_x86_64_gnu_pltenter
+# define pltexit la_x86_64_gnu_pltexit
+# define La_regs La_x86_64_regs
+# define La_retval La_x86_64_retval
+#else
+# define pltenter la_x32_gnu_pltenter
+# define pltexit la_x32_gnu_pltexit
+# define La_regs La_x32_regs
+# define La_retval La_x32_retval
+#endif
 #define int_retval lrv_rax
 
 #include <tst-audit.h>
@@ -150,7 +157,8 @@ pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
 	 const char *symname)
 {
   printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
-	  symname, (long int) sym->st_value, ndx, outregs->int_retval);
+	  symname, (long int) sym->st_value, ndx,
+	  (ptrdiff_t) outregs->int_retval);
 
   __m128i xmm;
 
diff --git a/elf/tst-auditmod6b.c b/elf/tst-auditmod6b.c
index a7a60b9..b00dcd7 100644
--- a/elf/tst-auditmod6b.c
+++ b/elf/tst-auditmod6b.c
@@ -94,10 +94,17 @@ la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
   return sym->st_value;
 }
 
-#define pltenter la_x86_64_gnu_pltenter
-#define pltexit la_x86_64_gnu_pltexit
-#define La_regs La_x86_64_regs
-#define La_retval La_x86_64_retval
+#ifdef __LP64__
+# define pltenter la_x86_64_gnu_pltenter
+# define pltexit la_x86_64_gnu_pltexit
+# define La_regs La_x86_64_regs
+# define La_retval La_x86_64_retval
+#else
+# define pltenter la_x32_gnu_pltenter
+# define pltexit la_x32_gnu_pltexit
+# define La_regs La_x32_regs
+# define La_retval La_x32_retval
+#endif
 #define int_retval lrv_rax
 
 #include <tst-audit.h>
@@ -179,7 +186,8 @@ pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
 	 const char *symname)
 {
   printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
-	  symname, (long int) sym->st_value, ndx, outregs->int_retval);
+	  symname, (long int) sym->st_value, ndx,
+	  (ptrdiff_t) outregs->int_retval);
 
 #ifdef __AVX__
   if (check_avx () && strcmp (symname, "audit_test") == 0)
diff --git a/elf/tst-auditmod6c.c b/elf/tst-auditmod6c.c
index e0b5ac2..a78c913 100644
--- a/elf/tst-auditmod6c.c
+++ b/elf/tst-auditmod6c.c
@@ -94,10 +94,17 @@ la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
   return sym->st_value;
 }
 
-#define pltenter la_x86_64_gnu_pltenter
-#define pltexit la_x86_64_gnu_pltexit
-#define La_regs La_x86_64_regs
-#define La_retval La_x86_64_retval
+#ifdef __LP64__
+# define pltenter la_x86_64_gnu_pltenter
+# define pltexit la_x86_64_gnu_pltexit
+# define La_regs La_x86_64_regs
+# define La_retval La_x86_64_retval
+#else
+# define pltenter la_x32_gnu_pltenter
+# define pltexit la_x32_gnu_pltexit
+# define La_regs La_x32_regs
+# define La_retval La_x32_retval
+#endif
 #define int_retval lrv_rax
 
 #include <tst-audit.h>
@@ -185,7 +192,8 @@ pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
 	 const char *symname)
 {
   printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
-	  symname, (long int) sym->st_value, ndx, outregs->int_retval);
+	  symname, (long int) sym->st_value, ndx,
+	  (ptrdiff_t) outregs->int_retval);
 
 #ifdef __AVX__
   if (check_avx () && strcmp (symname, "audit_test") == 0)
diff --git a/elf/tst-auditmod7b.c b/elf/tst-auditmod7b.c
index a27d385..d761149 100644
--- a/elf/tst-auditmod7b.c
+++ b/elf/tst-auditmod7b.c
@@ -94,10 +94,17 @@ la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
   return sym->st_value;
 }
 
-#define pltenter la_x86_64_gnu_pltenter
-#define pltexit la_x86_64_gnu_pltexit
-#define La_regs La_x86_64_regs
-#define La_retval La_x86_64_retval
+#ifdef __LP64__
+# define pltenter la_x86_64_gnu_pltenter
+# define pltexit la_x86_64_gnu_pltexit
+# define La_regs La_x86_64_regs
+# define La_retval La_x86_64_retval
+#else
+# define pltenter la_x32_gnu_pltenter
+# define pltexit la_x32_gnu_pltexit
+# define La_regs La_x32_regs
+# define La_retval La_x32_retval
+#endif
 #define int_retval lrv_rax
 
 #include <tst-audit.h>
@@ -177,7 +184,8 @@ pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
 	 const char *symname)
 {
   printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
-	  symname, (long int) sym->st_value, ndx, outregs->int_retval);
+	  symname, (long int) sym->st_value, ndx,
+	  (ptrdiff_t) outregs->int_retval);
 
 #ifdef __AVX__
   if (check_avx () && strcmp (symname, "audit_test") == 0)
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index f4531b4..d4cbaba 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -225,6 +225,10 @@ struct audit_ifaces
 				       uintptr_t *, struct La_x86_64_regs *,
 				       unsigned int *, const char *name,
 				       long int *framesizep);
+    Elf32_Addr (*x32_gnu_pltenter) (Elf32_Sym *, unsigned int, uintptr_t *,
+				    uintptr_t *, struct La_x32_regs *,
+				    unsigned int *, const char *name,
+				    long int *framesizep);
     Elf32_Addr (*ppc32_gnu_pltenter) (Elf32_Sym *, unsigned int, uintptr_t *,
 				      uintptr_t *, struct La_ppc32_regs *,
 				      unsigned int *, const char *name,
@@ -269,6 +273,11 @@ struct audit_ifaces
 					const struct La_x86_64_regs *,
 					struct La_x86_64_retval *,
 					const char *);
+    unsigned int (*x32_gnu_pltexit) (Elf32_Sym *, unsigned int, uintptr_t *,
+				     uintptr_t *,
+				     const struct La_x32_regs *,
+				     struct La_x86_64_retval *,
+				     const char *);
     unsigned int (*ppc32_gnu_pltexit) (Elf32_Sym *, unsigned int, uintptr_t *,
 				       uintptr_t *,
 				       const struct La_ppc32_regs *,
diff --git a/sysdeps/x86_64/bits/link.h b/sysdeps/x86_64/bits/link.h
index c79eda8..fa20910 100644
--- a/sysdeps/x86_64/bits/link.h
+++ b/sysdeps/x86_64/bits/link.h
@@ -20,7 +20,7 @@
 #endif
 
 
-#if __ELF_NATIVE_CLASS == 32
+#ifndef __x86_64__
 /* Registers for entry into PLT on IA-32.  */
 typedef struct La_i86_regs
 {
@@ -105,6 +105,8 @@ typedef struct La_x86_64_retval
   La_x86_64_vector lrv_vector1;
 } La_x86_64_retval;
 
+#define La_x32_regs La_x86_64_regs
+#define La_x32_retval La_x86_64_retval
 
 __BEGIN_DECLS
 
@@ -124,6 +126,22 @@ extern unsigned int la_x86_64_gnu_pltexit (Elf64_Sym *__sym,
 					   La_x86_64_retval *__outregs,
 					   const char *__symname);
 
+extern Elf32_Addr la_x32_gnu_pltenter (Elf32_Sym *__sym,
+				       unsigned int __ndx,
+				       uintptr_t *__refcook,
+				       uintptr_t *__defcook,
+				       La_x32_regs *__regs,
+				       unsigned int *__flags,
+				       const char *__symname,
+				       long int *__framesizep);
+extern unsigned int la_x32_gnu_pltexit (Elf32_Sym *__sym,
+					unsigned int __ndx,
+					uintptr_t *__refcook,
+					uintptr_t *__defcook,
+					const La_x32_regs *__inregs,
+					La_x32_retval *__outregs,
+					const char *__symname);
+
 __END_DECLS
 
 #endif