x86: replace NT_PRXFPREG with ELF_CORE_XFPREG_TYPE #define

Replace NT_PRXFPREG with ELF_CORE_XFPREG_TYPE in the coredump code which
allows for more flexibility in the note type for the state of 'extended
floating point' implementations in coredumps.  New note types can now be
added with an appropriate #define.

This does #define ELF_CORE_XFPREG_TYPE to be NT_PRXFPREG in all
current users so there's are no change in behaviour.

This will let us use different note types on powerpc for the Altivec/VMX
state that some PowerPC cpus have (G4, PPC970, POWER6) and for the SPE
(signal processing extension) state that some embedded PowerPC cpus from
Freescale have.

Signed-off-by: Mark Nelson <markn@au1.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Andi Kleen <ak@suse.de>
Cc: <linux-arch@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

5 files changed, 11 insertions, 8 deletions

diff --git a/arch/ia64/ia32/elfcore32.h b/arch/ia64/ia32/elfcore32.h
index a47f63b204fb..446c9aac924d 100644
--- a/arch/ia64/ia32/elfcore32.h
+++ b/arch/ia64/ia32/elfcore32.h
@@ -117,6 +117,7 @@ elf_core_copy_task_fpregs(struct task_struct *tsk, struct pt_regs *regs, elf_fpr
 }
 
 #define ELF_CORE_COPY_XFPREGS 1
+#define ELF_CORE_XFPREG_TYPE NT_PRXFPREG
 static inline int
 elf_core_copy_task_xfpregs(struct task_struct *tsk, elf_fpxregset_t *xfpu)
 {
diff --git a/arch/x86/ia32/ia32_binfmt.c b/arch/x86/ia32/ia32_binfmt.c
index dffd2ac72747..d3c53e8b05c0 100644
--- a/arch/x86/ia32/ia32_binfmt.c
+++ b/arch/x86/ia32/ia32_binfmt.c
@@ -188,6 +188,7 @@ elf_core_copy_task_fpregs(struct task_struct *tsk, struct pt_regs *regs, elf_fpr
 }
 
 #define ELF_CORE_COPY_XFPREGS 1
+#define ELF_CORE_XFPREG_TYPE NT_PRXFPREG
 static inline int 
 elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu)
 {
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index f3037c645ca9..2f31c4c3fd48 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1411,7 +1411,7 @@ struct elf_thread_status
         elf_fpregset_t fpu;             /* NT_PRFPREG */
         struct task_struct *thread;
 #ifdef ELF_CORE_COPY_XFPREGS
-        elf_fpxregset_t xfpu;           /* NT_PRXFPREG */
+        elf_fpxregset_t xfpu;           /* ELF_CORE_XFPREG_TYPE */
 #endif
         struct memelfnote notes[3];
         int num_notes;
@@ -1446,8 +1446,8 @@ static int elf_dump_thread_status(long signr, struct elf_thread_status *t)
 
 #ifdef ELF_CORE_COPY_XFPREGS
         if (elf_core_copy_task_xfpregs(p, &t->xfpu)) {
-                fill_note(&t->notes[2], "LINUX", NT_PRXFPREG, sizeof(t->xfpu),
-                          &t->xfpu);
+                fill_note(&t->notes[2], "LINUX", ELF_CORE_XFPREG_TYPE,
+                          sizeof(t->xfpu), &t->xfpu);
                 t->num_notes++;
                 sz += notesize(&t->notes[2]);
         }
@@ -1621,7 +1621,7 @@ static int elf_core_dump(long signr, struct pt_regs *regs, struct file *file)
 #ifdef ELF_CORE_COPY_XFPREGS
         if (elf_core_copy_task_xfpregs(current, xfpu))
                 fill_note(notes + numnote++,
-                          "LINUX", NT_PRXFPREG, sizeof(*xfpu), xfpu);
+                          "LINUX", ELF_CORE_XFPREG_TYPE, sizeof(*xfpu), xfpu);
 #endif  
   
         fs = get_fs();
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index c5ca2f0aca7f..faae02189598 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -1417,7 +1417,7 @@ struct elf_thread_status
         elf_fpregset_t fpu;             /* NT_PRFPREG */
         struct task_struct *thread;
 #ifdef ELF_CORE_COPY_XFPREGS
-        elf_fpxregset_t xfpu;           /* NT_PRXFPREG */
+        elf_fpxregset_t xfpu;           /* ELF_CORE_XFPREG_TYPE */
 #endif
         struct memelfnote notes[3];
         int num_notes;
@@ -1453,8 +1453,8 @@ static int elf_dump_thread_status(long signr, struct elf_thread_status *t)
 
 #ifdef ELF_CORE_COPY_XFPREGS
         if (elf_core_copy_task_xfpregs(p, &t->xfpu)) {
-                fill_note(&t->notes[2], "LINUX", NT_PRXFPREG, sizeof(t->xfpu),
-                          &t->xfpu);
+                fill_note(&t->notes[2], "LINUX", ELF_CORE_XFPREG_TYPE,
+                          sizeof(t->xfpu), &t->xfpu);
                 t->num_notes++;
                 sz += notesize(&t->notes[2]);
         }
@@ -1690,7 +1690,7 @@ static int elf_fdpic_core_dump(long signr, struct pt_regs *regs,
 #ifdef ELF_CORE_COPY_XFPREGS
         if (elf_core_copy_task_xfpregs(current, xfpu))
                 fill_note(notes + numnote++,
-                          "LINUX", NT_PRXFPREG, sizeof(*xfpu), xfpu);
+                          "LINUX", ELF_CORE_XFPREG_TYPE, sizeof(*xfpu), xfpu);
 #endif
 
         fs = get_fs();
diff --git a/include/asm-x86/elf_32.h b/include/asm-x86/elf_32.h
index b32df3a332da..af45f315435b 100644
--- a/include/asm-x86/elf_32.h
+++ b/include/asm-x86/elf_32.h
@@ -129,6 +129,7 @@ extern int dump_task_extended_fpu (struct task_struct *, struct user_fxsr_struct
 #define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
 #define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) dump_task_fpu(tsk, elf_fpregs)
 #define ELF_CORE_COPY_XFPREGS(tsk, elf_xfpregs) dump_task_extended_fpu(tsk, elf_xfpregs)
+#define ELF_CORE_XFPREG_TYPE NT_PRXFPREG
 
 #define VDSO_HIGH_BASE          (__fix_to_virt(FIX_VDSO))
 #define VDSO_CURRENT_BASE       ((unsigned long)current->mm->context.vdso)