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authorJames Bottomley <jejb@titanic.(none)>2005-05-20 15:27:44 -0500
committerJames Bottomley <jejb@titanic.(none)>2005-05-20 15:27:44 -0500
commitad34ea2cc3845ef4dcd7d12fb0fa8484734bd672 (patch)
treead434400f5ecaa33b433c8f830e40792d8d6c05c /arch/um/sys-i386/ptrace.c
parent90356ac3194bf91a441a5f9c3067af386ef62462 (diff)
parent88d7bd8cb9eb8d64bf7997600b0d64f7834047c5 (diff)
merge by hand - fix up rejections in Documentation/DocBook/Makefile
Diffstat (limited to 'arch/um/sys-i386/ptrace.c')
-rw-r--r--arch/um/sys-i386/ptrace.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/um/sys-i386/ptrace.c b/arch/um/sys-i386/ptrace.c
index e470d28cdf84..e839ce65ad28 100644
--- a/arch/um/sys-i386/ptrace.c
+++ b/arch/um/sys-i386/ptrace.c
@@ -73,6 +73,25 @@ int putreg(struct task_struct *child, int regno, unsigned long value)
return 0;
}
+int poke_user(struct task_struct *child, long addr, long data)
+{
+ if ((addr & 3) || addr < 0)
+ return -EIO;
+
+ if (addr < MAX_REG_OFFSET)
+ return putreg(child, addr, data);
+
+ else if((addr >= offsetof(struct user, u_debugreg[0])) &&
+ (addr <= offsetof(struct user, u_debugreg[7]))){
+ addr -= offsetof(struct user, u_debugreg[0]);
+ addr = addr >> 2;
+ if((addr == 4) || (addr == 5)) return -EIO;
+ child->thread.arch.debugregs[addr] = data;
+ return 0;
+ }
+ return -EIO;
+}
+
unsigned long getreg(struct task_struct *child, int regno)
{
unsigned long retval = ~0UL;
@@ -93,6 +112,27 @@ unsigned long getreg(struct task_struct *child, int regno)
return retval;
}
+int peek_user(struct task_struct *child, long addr, long data)
+{
+/* read the word at location addr in the USER area. */
+ unsigned long tmp;
+
+ if ((addr & 3) || addr < 0)
+ return -EIO;
+
+ tmp = 0; /* Default return condition */
+ if(addr < MAX_REG_OFFSET){
+ tmp = getreg(child, addr);
+ }
+ else if((addr >= offsetof(struct user, u_debugreg[0])) &&
+ (addr <= offsetof(struct user, u_debugreg[7]))){
+ addr -= offsetof(struct user, u_debugreg[0]);
+ addr = addr >> 2;
+ tmp = child->thread.arch.debugregs[addr];
+ }
+ return put_user(tmp, (unsigned long *) data);
+}
+
struct i387_fxsave_struct {
unsigned short cwd;
unsigned short swd;