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Subject[PATCH 26/72] Blackfin: add support for common FDPIC ptrace requests
Date
The FDPIC arches support a standard set of ptrace requests so rather than
define our own custom API, hook up those requests for common code to
leverage.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
arch/blackfin/kernel/ptrace.c | 26 ++++++++++++++++++++++++--
1 files changed, 24 insertions(+), 2 deletions(-)
diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c
index 271d7c6..30f4828 100644
--- a/arch/blackfin/kernel/ptrace.c
+++ b/arch/blackfin/kernel/ptrace.c
@@ -285,9 +285,9 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
tmp = child->mm->start_data;
#ifdef CONFIG_BINFMT_ELF_FDPIC
} else if (addr == (sizeof(struct pt_regs) + 12)) {
- tmp = child->mm->context.exec_fdpic_loadmap;
+ goto case_PTRACE_GETFDPIC_EXEC;
} else if (addr == (sizeof(struct pt_regs) + 16)) {
- tmp = child->mm->context.interp_fdpic_loadmap;
+ goto case_PTRACE_GETFDPIC_INTERP;
#endif
} else {
tmp = get_reg(child, addr);
@@ -296,6 +296,28 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
break;
}

+#ifdef CONFIG_BINFMT_ELF_FDPIC
+ case PTRACE_GETFDPIC: {
+ unsigned long tmp = 0;
+
+ switch (addr) {
+ case_PTRACE_GETFDPIC_EXEC:
+ case PTRACE_GETFDPIC_EXEC:
+ tmp = child->mm->context.exec_fdpic_loadmap;
+ break;
+ case_PTRACE_GETFDPIC_INTERP:
+ case PTRACE_GETFDPIC_INTERP:
+ tmp = child->mm->context.interp_fdpic_loadmap;
+ break;
+ default:
+ break;
+ }
+
+ ret = put_user(tmp, datap);
+ break;
+ }
+#endif
+
/* when I and D space are separate, this will have to be fixed. */
case PTRACE_POKEDATA:
pr_debug("ptrace: PTRACE_PEEKDATA\n");
--
1.6.4.2


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