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authorDavid S. Miller <davem@davemloft.net>2011-06-20 19:56:40 -0700
committerDavid S. Miller <davem@davemloft.net>2011-06-20 19:56:40 -0700
commit42675c6ff0e95346de8a2cbc066e14e0d6a856e4 (patch)
tree2350fafe239e6a63d30f480628cc1f1d86e0b5a4 /sysdeps
parent57912a71cc379f8582e3ea272782dc39c6c02e45 (diff)
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Add an elf_ifunc_invoke interface so that architectures can implement
the ifunc resolver calls however they wish.
Diffstat (limited to 'sysdeps')
-rw-r--r--sysdeps/i386/dl-irel.h9
-rw-r--r--sysdeps/powerpc/powerpc32/dl-irel.h9
-rw-r--r--sysdeps/powerpc/powerpc64/dl-irel.h11
-rw-r--r--sysdeps/sparc/sparc32/dl-irel.h11
-rw-r--r--sysdeps/sparc/sparc32/dl-plt.h5
-rw-r--r--sysdeps/sparc/sparc64/dl-irel.h11
-rw-r--r--sysdeps/sparc/sparc64/dl-plt.h5
-rw-r--r--sysdeps/x86_64/dl-irel.h9
8 files changed, 61 insertions, 9 deletions
diff --git a/sysdeps/i386/dl-irel.h b/sysdeps/i386/dl-irel.h
index 30385a1ef8..70cd6b04db 100644
--- a/sysdeps/i386/dl-irel.h
+++ b/sysdeps/i386/dl-irel.h
@@ -26,6 +26,13 @@
#define ELF_MACHINE_IREL 1
+static inline Elf32_Addr
+__attribute ((always_inline))
+elf_ifunc_invoke (Elf32_Addr addr)
+{
+ return ((Elf32_Addr (*) (void)) (addr)) ();
+}
+
static inline void
__attribute ((always_inline))
elf_irel (const Elf32_Rel *reloc)
@@ -35,7 +42,7 @@ elf_irel (const Elf32_Rel *reloc)
if (__builtin_expect (r_type == R_386_IRELATIVE, 1))
{
- Elf32_Addr value = ((Elf32_Addr (*) (void)) (*reloc_addr)) ();
+ Elf32_Addr value = elf_ifunc_invoke(*reloc_addr);
*reloc_addr = value;
}
else
diff --git a/sysdeps/powerpc/powerpc32/dl-irel.h b/sysdeps/powerpc/powerpc32/dl-irel.h
index 3f204cd7ae..a31e1edd4a 100644
--- a/sysdeps/powerpc/powerpc32/dl-irel.h
+++ b/sysdeps/powerpc/powerpc32/dl-irel.h
@@ -26,6 +26,13 @@
#define ELF_MACHINE_IRELA 1
+static inline Elf32_Addr
+__attribute ((always_inline))
+elf_ifunc_invoke (Elf32_Addr addr)
+{
+ return ((Elf32_Addr (*) (void)) (addr)) ();
+}
+
static inline void
__attribute ((always_inline))
elf_irela (const Elf32_Rela *reloc)
@@ -35,7 +42,7 @@ elf_irela (const Elf32_Rela *reloc)
if (__builtin_expect (r_type == R_PPC_IRELATIVE, 1))
{
Elf32_Addr *const reloc_addr = (void *) reloc->r_offset;
- Elf32_Addr value = ((Elf32_Addr (*) (void)) reloc->r_addend) ();
+ Elf32_Addr value = elf_ifunc_invoke(reloc->r_addend);
*reloc_addr = value;
}
else
diff --git a/sysdeps/powerpc/powerpc64/dl-irel.h b/sysdeps/powerpc/powerpc64/dl-irel.h
index 6cded5091d..3c2668fbb7 100644
--- a/sysdeps/powerpc/powerpc64/dl-irel.h
+++ b/sysdeps/powerpc/powerpc64/dl-irel.h
@@ -33,6 +33,13 @@ typedef struct
Elf64_Addr fd_aux;
} Elf64_FuncDesc;
+static inline Elf64_Addr
+__attribute ((always_inline))
+elf_ifunc_invoke (Elf64_Addr addr)
+{
+ return ((Elf64_Addr (*) (void)) (addr)) ();
+}
+
static inline void
__attribute ((always_inline))
elf_irela (const Elf64_Rela *reloc)
@@ -42,13 +49,13 @@ elf_irela (const Elf64_Rela *reloc)
if (__builtin_expect (r_type == R_PPC64_IRELATIVE, 1))
{
Elf64_Addr *const reloc_addr = (void *) reloc->r_offset;
- Elf64_Addr value = ((Elf64_Addr (*) (void)) reloc->r_addend) ();
+ Elf64_Addr value = elf_ifunc_invoke(reloc->r_addend);
*reloc_addr = value;
}
else if (__builtin_expect (r_type == R_PPC64_JMP_IREL, 1))
{
Elf64_Addr *const reloc_addr = (void *) reloc->r_offset;
- Elf64_Addr value = ((Elf64_Addr (*) (void)) reloc->r_addend) ();
+ Elf64_Addr value = elf_ifunc_invoke(reloc->r_addend);
*(Elf64_FuncDesc *) reloc_addr = *(Elf64_FuncDesc *) value;
}
else
diff --git a/sysdeps/sparc/sparc32/dl-irel.h b/sysdeps/sparc/sparc32/dl-irel.h
index 2753fb4ceb..4eaaa37d69 100644
--- a/sysdeps/sparc/sparc32/dl-irel.h
+++ b/sysdeps/sparc/sparc32/dl-irel.h
@@ -28,6 +28,13 @@
#define ELF_MACHINE_IRELA 1
+static inline Elf32_Addr
+__attribute ((always_inline))
+elf_ifunc_invoke (Elf32_Addr addr)
+{
+ return ((Elf32_Addr (*) (int)) (addr)) (GLRO(dl_hwcap));
+}
+
static inline void
__attribute ((always_inline))
elf_irela (const Elf32_Rela *reloc)
@@ -37,13 +44,13 @@ elf_irela (const Elf32_Rela *reloc)
if (__builtin_expect (r_type == R_SPARC_IRELATIVE, 1))
{
Elf32_Addr *const reloc_addr = (void *) reloc->r_offset;
- Elf32_Addr value = ((Elf32_Addr (*) (int)) reloc->r_addend) (GLRO(dl_hwcap));
+ Elf32_Addr value = elf_ifunc_invoke(reloc->r_addend);
*reloc_addr = value;
}
else if (__builtin_expect (r_type == R_SPARC_JMP_IREL, 1))
{
Elf32_Addr *const reloc_addr = (void *) reloc->r_offset;
- Elf32_Addr value = ((Elf32_Addr (*) (int)) reloc->r_addend) (GLRO(dl_hwcap));
+ Elf32_Addr value = elf_ifunc_invoke(reloc->r_addend);
sparc_fixup_plt (reloc, reloc_addr, value, 0, 1);
}
diff --git a/sysdeps/sparc/sparc32/dl-plt.h b/sysdeps/sparc/sparc32/dl-plt.h
index bfb891fe69..0fbd95093b 100644
--- a/sysdeps/sparc/sparc32/dl-plt.h
+++ b/sysdeps/sparc/sparc32/dl-plt.h
@@ -18,6 +18,9 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
+#ifndef _DL_PLT_H
+#define _DL_PLT_H
+
/* Some SPARC opcodes we need to use for self-modifying code. */
#define OPCODE_NOP 0x01000000 /* nop */
#define OPCODE_CALL 0x40000000 /* call ?; add PC-rel word address */
@@ -95,3 +98,5 @@ sparc_fixup_plt (const Elf32_Rela *reloc, Elf32_Addr *reloc_addr,
return value;
}
+
+#endif /* dl-plt.h */
diff --git a/sysdeps/sparc/sparc64/dl-irel.h b/sysdeps/sparc/sparc64/dl-irel.h
index 0d70e2a448..e356ac6420 100644
--- a/sysdeps/sparc/sparc64/dl-irel.h
+++ b/sysdeps/sparc/sparc64/dl-irel.h
@@ -28,6 +28,13 @@
#define ELF_MACHINE_IRELA 1
+static inline Elf64_Addr
+__attribute ((always_inline))
+elf_ifunc_invoke (Elf64_Addr addr)
+{
+ return ((Elf64_Addr (*) (int)) (addr)) (GLRO(dl_hwcap));
+}
+
static inline void
__attribute ((always_inline))
elf_irela (const Elf64_Rela *reloc)
@@ -37,13 +44,13 @@ elf_irela (const Elf64_Rela *reloc)
if (__builtin_expect (r_type == R_SPARC_IRELATIVE, 1))
{
Elf64_Addr *const reloc_addr = (void *) reloc->r_offset;
- Elf64_Addr value = ((Elf64_Addr (*) (int)) reloc->r_addend) (GLRO(dl_hwcap));
+ Elf64_Addr value = elf_ifunc_invoke(reloc->r_addend);
*reloc_addr = value;
}
else if (__builtin_expect (r_type == R_SPARC_JMP_IREL, 1))
{
Elf64_Addr *const reloc_addr = (void *) reloc->r_offset;
- Elf64_Addr value = ((Elf64_Addr (*) (int)) reloc->r_addend) (GLRO(dl_hwcap));
+ Elf64_Addr value = elf_ifunc_invoke(reloc->r_addend);
struct link_map map = { .l_addr = 0 };
/* 'high' is always zero, for large PLT entries the linker
diff --git a/sysdeps/sparc/sparc64/dl-plt.h b/sysdeps/sparc/sparc64/dl-plt.h
index ca2fe3bbd8..ed8abfa115 100644
--- a/sysdeps/sparc/sparc64/dl-plt.h
+++ b/sysdeps/sparc/sparc64/dl-plt.h
@@ -17,6 +17,9 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
+#ifndef _DL_PLT_H
+#define _DL_PLT_H
+
/* We have 4 cases to handle. And we code different code sequences
for each one. I love V9 code models... */
static inline void __attribute__ ((always_inline))
@@ -161,3 +164,5 @@ sparc64_fixup_plt (struct link_map *map, const Elf64_Rela *reloc,
__asm __volatile ("flush %0" : : "r" (insns));
}
}
+
+#endif /* dl-plt.h */
diff --git a/sysdeps/x86_64/dl-irel.h b/sysdeps/x86_64/dl-irel.h
index d2d5c0670e..19f94576b3 100644
--- a/sysdeps/x86_64/dl-irel.h
+++ b/sysdeps/x86_64/dl-irel.h
@@ -26,6 +26,13 @@
#define ELF_MACHINE_IRELA 1
+static inline Elf64_Addr
+__attribute ((always_inline))
+elf_ifunc_invoke (Elf64_Addr addr)
+{
+ return ((Elf64_Addr (*) (void)) (addr)) ();
+}
+
static inline void
__attribute ((always_inline))
elf_irela (const Elf64_Rela *reloc)
@@ -35,7 +42,7 @@ elf_irela (const Elf64_Rela *reloc)
if (__builtin_expect (r_type == R_X86_64_IRELATIVE, 1))
{
- Elf64_Addr value = ((Elf64_Addr (*) (void)) reloc->r_addend) ();
+ Elf64_Addr value = elf_ifunc_invoke(reloc->r_addend);
*reloc_addr = value;
}
else