projects/linux·commit b3f827cb

[PATCH] Add regs_return_value() helper

b3f827cb · Ananth N Mavinakayanahalli <[email protected]> · 2006-10-02 02:17:31 -07:00

Add the regs_return_value() macro to extract the return value in an
architecture agnostic manner, given the pt_regs.

Other architecture maintainers may want to add similar helpers.

Signed-off-by: Ananth N Mavinakayanahalli <[email protected]>
Signed-off-by: Anil S Keshavamurthy <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Commit
b3f827cb0fe0660c2eacea2c2f9bdb1f225ff768
Parents
412998cf

Changes

5 files changed · +11 −0

FileStatusAddDelContent
include/asm-i386/ptrace.hmodified+3−0View file
include/asm-ia64/ptrace.hmodified+3−0View file
include/asm-powerpc/ptrace.hmodified+2−0View file
include/asm-s390/ptrace.hmodified+1−0View file
include/asm-x86_64/ptrace.hmodified+2−0View file

include/asm-i386/ptrace.h

View file
diff --git a/include/asm-i386/ptrace.h b/include/asm-i386/ptrace.h
index a4a0e52..d505f50 100644
--- a/include/asm-i386/ptrace.h
+++ b/include/asm-i386/ptrace.h
@@ -47,7 +47,10 @@ static inline int user_mode_vm(struct pt_regs *regs)
{
return ((regs->xcs & SEGMENT_RPL_MASK) | (regs->eflags & VM_MASK)) >= USER_RPL;
}
+
#define instruction_pointer(regs) ((regs)->eip)
+#define regs_return_value(regs) ((regs)->eax)
+
extern unsigned long profile_pc(struct pt_regs *regs);
#endif /* __KERNEL__ */

include/asm-ia64/ptrace.h

View file
diff --git a/include/asm-ia64/ptrace.h b/include/asm-ia64/ptrace.h
index 1414316..f4ef87a 100644
--- a/include/asm-ia64/ptrace.h
+++ b/include/asm-ia64/ptrace.h
@@ -241,6 +241,9 @@ struct switch_stack {
* the canonical representation by adding to instruction pointer.
*/
# define instruction_pointer(regs) ((regs)->cr_iip + ia64_psr(regs)->ri)
+
+#define regs_return_value(regs) ((regs)->r8)
+
/* Conserve space in histogram by encoding slot bits in address
* bits 2 and 3 rather than bits 0 and 1.
*/

include/asm-powerpc/ptrace.h

View file
diff --git a/include/asm-powerpc/ptrace.h b/include/asm-powerpc/ptrace.h
index 4435efe..4ad77a1 100644
--- a/include/asm-powerpc/ptrace.h
+++ b/include/asm-powerpc/ptrace.h
@@ -73,6 +73,8 @@ struct pt_regs {
#ifndef __ASSEMBLY__
#define instruction_pointer(regs) ((regs)->nip)
+#define regs_return_value(regs) ((regs)->gpr[3])
+
#ifdef CONFIG_SMP
extern unsigned long profile_pc(struct pt_regs *regs);
#else

include/asm-s390/ptrace.h

View file
diff --git a/include/asm-s390/ptrace.h b/include/asm-s390/ptrace.h
index 8d2bf65..7b768c5 100644
--- a/include/asm-s390/ptrace.h
+++ b/include/asm-s390/ptrace.h
@@ -472,6 +472,7 @@ struct user_regs_struct
#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)
#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN)
+#define regs_return_value(regs)((regs)->gprs[2])
#define profile_pc(regs) instruction_pointer(regs)
extern void show_regs(struct pt_regs * regs);
#endif

include/asm-x86_64/ptrace.h

View file
diff --git a/include/asm-x86_64/ptrace.h b/include/asm-x86_64/ptrace.h
index ab827dc..5ea84db 100644
--- a/include/asm-x86_64/ptrace.h
+++ b/include/asm-x86_64/ptrace.h
@@ -39,6 +39,8 @@ struct pt_regs {
#define user_mode(regs) (!!((regs)->cs & 3))
#define user_mode_vm(regs) user_mode(regs)
#define instruction_pointer(regs) ((regs)->rip)
+#define regs_return_value(regs) ((regs)->rax)
+
extern unsigned long profile_pc(struct pt_regs *regs);
void signal_fault(struct pt_regs *regs, void __user *frame, char *where);