+2009-10-28 Alan Modra <amodra@bigpond.net.au>
+
+ * elf/ifuncdep2.c: Include ifunc-sel.h.
+ (global): Delete.
+ (foo1_ifunc, foo2_ifunc, foo3_ifunc): Use ifunc_sel.
+ * elf/ifuncmain1.c (global): Delete.
+ * elf/ifuncmain1vis.c: Likewise.
+ * elf/ifuncmain2.c: Likewise.
+ * elf/ifuncmain5.c: Likewise.
+ * elf/ifuncmod3.c: Likewise.
+ * elf/ifuncmain6pie.c: Include ifunc-sel.h.
+ (foo_ifunc): Use ifunc_one.
+ * elf/ifuncmain7.c: Likewise.
+ * elf/ifuncmod1.c: Include ifunc-sel.h.
+ (global): Define protected var.
+ (foo_ifunc, foo_hidden_ifunc, foo_protected_ifunc): Use ifunc_sel.
+ * elf/ifuncmod5.c: Likewise.
+ * sysdeps/generic/elf/ifunc-sel.h: New file.
+ * sysdeps/powerpc/elf/ifunc-sel.h: New file.
+
2009-07-30 Alan Modra <amodra@bigpond.net.au>
* elf/elf.h (R_PPC_NUM, R_PPC64_NUM): Delete unused and incorrect.
/* Test 3 STT_GNU_IFUNC symbols. */
-extern int global;
+#include "ifunc-sel.h"
+
+int global __attribute__ ((visibility ("protected"))) = -1;
static int
one (void)
void *
foo1_ifunc (void)
{
- switch (global)
- {
- case 1:
- return one;
- case -1:
- return minus_one;
- default:
- return zero;
- }
+ return ifunc_sel (one, minus_one, zero);
}
void * foo2_ifunc (void) __asm__ ("foo2");
void *
foo2_ifunc (void)
{
- switch (global)
- {
- case 1:
- return minus_one;
- case -1:
- return one;
- default:
- return zero;
- }
+ return ifunc_sel (minus_one, one, zero);
}
void * foo3_ifunc (void) __asm__ ("foo3");
void *
foo3_ifunc (void)
{
- switch (global)
- {
- case 1:
- return one;
- case -1:
- return zero;
- default:
- return minus_one;
- }
+ return ifunc_sel (one, zero, minus_one);
}
#include <stdlib.h>
-int global = -1;
-
int ret_foo;
int ret_foo_hidden;
int ret_foo_protected;
#include <stdlib.h>
-int global = -1;
-
int ret_foo;
int ret_foo_hidden;
int ret_foo_protected;
#include <stdlib.h>
-int global = -1;
-
extern int foo1 (void);
int
#include <stdlib.h>
-int global = -1;
-
extern int foo (void);
extern int foo_protected (void);
*/
#include <stdlib.h>
+#include "ifunc-sel.h"
typedef int (*foo_p) (void);
extern foo_p foo_ptr;
void *
foo_ifunc (void)
{
- return one;
+ return ifunc_one (one);
}
extern int foo (void);
*/
#include <stdlib.h>
+#include "ifunc-sel.h"
extern int foo (void);
__attribute__ ((used))
foo_ifunc (void)
{
- return one;
+ return ifunc_one (one);
}
typedef int (*foo_p) (void);
2. Function pointer.
3. Visibility.
*/
+#include "ifunc-sel.h"
-extern int global;
+int global __attribute__ ((visibility ("protected"))) = -1;
static int
one (void)
}
static int
-zero (void)
+zero (void)
{
return 0;
}
void * foo_ifunc (void) __asm__ ("foo");
__asm__(".type foo, %gnu_indirect_function");
-void *
+void *
foo_ifunc (void)
{
- switch (global)
- {
- case 1:
- return one;
- case -1:
- return minus_one;
- default:
- return zero;
- }
+ return ifunc_sel (one, minus_one, zero);
}
void * foo_hidden_ifunc (void) __asm__ ("foo_hidden");
__asm__(".type foo_hidden, %gnu_indirect_function");
-void *
+void *
foo_hidden_ifunc (void)
{
- switch (global)
- {
- case 1:
- return minus_one;
- case -1:
- return one;
- default:
- return zero;
- }
+ return ifunc_sel (minus_one, one, zero);
}
void * foo_protected_ifunc (void) __asm__ ("foo_protected");
__asm__(".type foo_protected, %gnu_indirect_function");
-void *
+void *
foo_protected_ifunc (void)
{
- switch (global)
- {
- case 1:
- return one;
- case -1:
- return zero;
- default:
- return minus_one;
- }
+ return ifunc_sel (one, zero, minus_one);
}
/* Test hidden indirect function. */
int ret_foo;
int ret_foo_hidden;
int ret_foo_protected;
-int global = -1;
/* Test STT_GNU_IFUNC symbols without direct function call. */
+#include "ifunc-sel.h"
-extern int global;
+int global __attribute__ ((visibility ("protected"))) = -1;
static int
one (void)
void *
foo_ifunc (void)
{
- switch (global)
- {
- case 1:
- return one;
- case -1:
- return minus_one;
- default:
- return zero;
- }
+ return ifunc_sel (one, minus_one, zero);
}
void * foo_hidden_ifunc (void) __asm__ ("foo_hidden");
void *
foo_hidden_ifunc (void)
{
- switch (global)
- {
- case 1:
- return minus_one;
- case -1:
- return one;
- default:
- return zero;
- }
+ return ifunc_sel (minus_one, one, zero);
}
void * foo_protected_ifunc (void) __asm__ ("foo_protected");
void *
foo_protected_ifunc (void)
{
- switch (global)
- {
- case 1:
- return one;
- case -1:
- return zero;
- default:
- return minus_one;
- }
+ return ifunc_sel (one, zero, minus_one);
}
/* Test hidden indirect function. */
--- /dev/null
+/* Used by the elf ifunc tests. */
+#ifndef ELF_IFUNC_SEL_H
+#define ELF_IFUNC_SEL_H 1
+
+extern int global;
+
+static inline void *
+ifunc_sel (int (*f1) (void), int (*f2) (void), int (*f3) (void))
+{
+ switch (global)
+ {
+ case 1:
+ return f1;
+ case -1:
+ return f2;
+ default:
+ return f3;
+ }
+}
+
+static inline void *
+ifunc_one (int (*f1) (void))
+{
+ return f1;
+}
+#endif
--- /dev/null
+/* Used by the elf ifunc tests. */
+#ifndef ELF_IFUNC_SEL_H
+#define ELF_IFUNC_SEL_H 1
+
+extern int global;
+
+static inline void *
+ifunc_sel (int (*f1) (void), int (*f2) (void), int (*f3) (void))
+{
+ register void *ret __asm__ ("r3");
+ __asm__ ("mflr 12\n\t"
+ "bcl 20,31,1f\n"
+ "1:\tmflr 11\n\t"
+ "mtlr 12\n\t"
+ "addis 12,11,global-1b@ha\n\t"
+ "lwz 12,global-1b@l(12)\n\t"
+ "addis %0,11,%2-1b@ha\n\t"
+ "addi %0,%0,%2-1b@l\n\t"
+ "cmpwi 12,1\n\t"
+ "beqlr\n\t"
+ "addis %0,11,%3-1b@ha\n\t"
+ "addi %0,%0,%3-1b@l\n\t"
+ "cmpwi 12,-1\n\t"
+ "beqlr\n\t"
+ "addis %0,11,%4-1b@ha\n\t"
+ "addi %0,%0,%4-1b@l"
+ : "=r" (ret)
+ : "X" (&global), "X" (f1), "X" (f2), "X" (f3));
+ return ret;
+}
+
+static inline void *
+ifunc_one (int (*f1) (void))
+{
+ register void *ret __asm__ ("r3");
+ __asm__ ("mflr 12\n\t"
+ "bcl 20,31,1f\n"
+ "1:\tmflr %0\n\t"
+ "mtlr 12\n\t"
+ "addis %0,%0,%1-1b@ha\n\t"
+ "addi %0,%0,%1-1b@l"
+ : "=r" (ret)
+ : "X" (f1));
+ return ret;
+}
+#endif