renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2025-01-18 10:34:24 +08:00
Code

powerpc: Remove old powerpc specific ptrace getregs/setregs calls

Browse Source 
PowerPC has non standard getregs calls that only dump the GPRs or
FPRs and have their arguments reversed. commit e17666ba48 (ptrace
updates & new, better requests) in 2.6.3 deprecated them and introduced
more standard versions.

It's been about 5 years and I know of no users of the old calls so
lets remove them.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard 2012-04-17 19:36:21 +00:00 committed by Benjamin Herrenschmidt
parent 14fb1fa6e2
commit ec34a68149
3 changed files with 0 additions and 80 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/powerpc/include/asm/ptrace.h
View File

@ -354,12 +354,6 @@ static inline unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs,
#define PTRACE_GETREGS64 22 #define PTRACE_GETREGS64 22
#define PTRACE_SETREGS64 23 #define PTRACE_SETREGS64 23
/* (old) PTRACE requests with inverted arguments */
#define PPC_PTRACE_GETREGS 0x99 /* Get GPRs 0 - 31 */
#define PPC_PTRACE_SETREGS 0x98 /* Set GPRs 0 - 31 */
#define PPC_PTRACE_GETFPREGS 0x97 /* Get FPRs 0 - 31 */
#define PPC_PTRACE_SETFPREGS 0x96 /* Set FPRs 0 - 31 */
/* Calls to trace a 64bit program from a 32bit program */ /* Calls to trace a 64bit program from a 32bit program */
#define PPC_PTRACE_PEEKTEXT_3264 0x95 #define PPC_PTRACE_PEEKTEXT_3264 0x95
#define PPC_PTRACE_PEEKDATA_3264 0x94 #define PPC_PTRACE_PEEKDATA_3264 0x94

42
arch/powerpc/kernel/ptrace.c
View File

@ -1432,40 +1432,6 @@ static long ppc_del_hwdebug(struct task_struct *child, long addr, long data)
#endif #endif
} }
/*
* Here are the old "legacy" powerpc specific getregs/setregs ptrace calls,
* we mark them as obsolete now, they will be removed in a future version
*/
static long arch_ptrace_old(struct task_struct *child, long request,
unsigned long addr, unsigned long data)
{
void __user *datavp = (void __user *) data;
switch (request) {
case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */
return copy_regset_to_user(child, &user_ppc_native_view,
REGSET_GPR, 0, 32 * sizeof(long),
datavp);
case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */
return copy_regset_from_user(child, &user_ppc_native_view,
REGSET_GPR, 0, 32 * sizeof(long),
datavp);
case PPC_PTRACE_GETFPREGS: /* Get FPRs 0 - 31. */
return copy_regset_to_user(child, &user_ppc_native_view,
REGSET_FPR, 0, 32 * sizeof(double),
datavp);
case PPC_PTRACE_SETFPREGS: /* Set FPRs 0 - 31. */
return copy_regset_from_user(child, &user_ppc_native_view,
REGSET_FPR, 0, 32 * sizeof(double),
datavp);
}
return -EPERM;
}
long arch_ptrace(struct task_struct *child, long request, long arch_ptrace(struct task_struct *child, long request,
unsigned long addr, unsigned long data) unsigned long addr, unsigned long data)
{ {
@ -1687,14 +1653,6 @@ long arch_ptrace(struct task_struct *child, long request,
datavp); datavp);
#endif #endif
/* Old reverse args ptrace callss */
case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */
case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */
case PPC_PTRACE_GETFPREGS: /* Get FPRs 0 - 31. */
case PPC_PTRACE_SETFPREGS: /* Get FPRs 0 - 31. */
ret = arch_ptrace_old(child, request, addr, data);
break;
default: default:
ret = ptrace_request(child, request, addr, data); ret = ptrace_request(child, request, addr, data);
break; break;

32
arch/powerpc/kernel/ptrace32.c
View File

@ -39,30 +39,6 @@
* in exit.c or in signal.c. * in exit.c or in signal.c.
*/ */
/*
* Here are the old "legacy" powerpc specific getregs/setregs ptrace calls,
* we mark them as obsolete now, they will be removed in a future version
*/
static long compat_ptrace_old(struct task_struct *child, long request,
long addr, long data)
{
switch (request) {
case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */
return copy_regset_to_user(child,
task_user_regset_view(current), 0,
0, 32 * sizeof(compat_long_t),
compat_ptr(data));
case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */
return copy_regset_from_user(child,
task_user_regset_view(current), 0,
0, 32 * sizeof(compat_long_t),
compat_ptr(data));
}
return -EPERM;
}
/* Macros to workout the correct index for the FPR in the thread struct */ /* Macros to workout the correct index for the FPR in the thread struct */
#define FPRNUMBER(i) (((i) - PT_FPR0) >> 1) #define FPRNUMBER(i) (((i) - PT_FPR0) >> 1)
#define FPRHALF(i) (((i) - PT_FPR0) & 1) #define FPRHALF(i) (((i) - PT_FPR0) & 1)
@ -308,8 +284,6 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
case PTRACE_SETVSRREGS: case PTRACE_SETVSRREGS:
case PTRACE_GETREGS64: case PTRACE_GETREGS64:
case PTRACE_SETREGS64: case PTRACE_SETREGS64:
case PPC_PTRACE_GETFPREGS:
case PPC_PTRACE_SETFPREGS:
case PTRACE_KILL: case PTRACE_KILL:
case PTRACE_SINGLESTEP: case PTRACE_SINGLESTEP:
case PTRACE_DETACH: case PTRACE_DETACH:
@ -322,12 +296,6 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
ret = arch_ptrace(child, request, addr, data); ret = arch_ptrace(child, request, addr, data);
break; break;
/* Old reverse args ptrace callss */
case PPC_PTRACE_GETREGS: /* Get GPRs 0 - 31. */
case PPC_PTRACE_SETREGS: /* Set GPRs 0 - 31. */
ret = compat_ptrace_old(child, request, addr, data);
break;
default: default:
ret = compat_ptrace_request(child, request, addr, data); ret = compat_ptrace_request(child, request, addr, data);
break; break;