[S390] ptrace: use common code for simple peek/poke operations
arch_ptrace on s390 implements PTRACE_(PEEK|POKE)(TEXT|DATA) instead of
using using ptrace_request in kernel/ptrace.c.
The only reason is the 31bit addressing mode, where we have to unmask the
highest bit.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index f3ddd7a..a873867 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -339,24 +339,10 @@
int copied, ret;
switch (request) {
- case PTRACE_PEEKTEXT:
- case PTRACE_PEEKDATA:
- /* Remove high order bit from address (only for 31 bit). */
- addr &= PSW_ADDR_INSN;
- /* read word at location addr. */
- return generic_ptrace_peekdata(child, addr, data);
-
case PTRACE_PEEKUSR:
/* read the word at location addr in the USER area. */
return peek_user(child, addr, data);
- case PTRACE_POKETEXT:
- case PTRACE_POKEDATA:
- /* Remove high order bit from address (only for 31 bit). */
- addr &= PSW_ADDR_INSN;
- /* write the word at location addr. */
- return generic_ptrace_pokedata(child, addr, data);
-
case PTRACE_POKEUSR:
/* write the word at location addr in the USER area */
return poke_user(child, addr, data);
@@ -386,8 +372,11 @@
copied += sizeof(unsigned long);
}
return 0;
+ default:
+ /* Removing high order bit from addr (only for 31 bit). */
+ addr &= PSW_ADDR_INSN;
+ return ptrace_request(child, request, addr, data);
}
- return ptrace_request(child, request, addr, data);
}
#ifdef CONFIG_COMPAT