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| author | Christian Borntraeger <borntraeger@de.ibm.com> | 2009-09-22 22:58:48 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-09-22 22:58:45 +0200 |
| commit | 07805ac81c81634623042408ffea6bbad3160bfa (patch) | |
| tree | 215f40336ba0b9c9663337c9d99409c4a35d71d9 /arch/s390 | |
| parent | bdd42b28cde0453fb8c3d9b4e4868ca2d8124806 (diff) | |
| download | linux-07805ac81c81634623042408ffea6bbad3160bfa.tar.gz linux-07805ac81c81634623042408ffea6bbad3160bfa.tar.bz2 linux-07805ac81c81634623042408ffea6bbad3160bfa.zip | |
[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>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/ptrace.c | 19 |
1 files changed, 4 insertions, 15 deletions
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index f3ddd7ac06c5..a8738676b26c 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -339,24 +339,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) 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 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) 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 |