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Diffstat (limited to 'arch/powerpc/kernel/ptrace32.c')
-rw-r--r--arch/powerpc/kernel/ptrace32.c85
1 files changed, 44 insertions, 41 deletions
diff --git a/arch/powerpc/kernel/ptrace32.c b/arch/powerpc/kernel/ptrace32.c
index 4c1de6af4c0..f52b7db327c 100644
--- a/arch/powerpc/kernel/ptrace32.c
+++ b/arch/powerpc/kernel/ptrace32.c
@@ -21,7 +21,6 @@
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/smp.h>
-#include <linux/smp_lock.h>
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/regset.h>
@@ -33,36 +32,17 @@
#include <asm/uaccess.h>
#include <asm/page.h>
#include <asm/pgtable.h>
-#include <asm/system.h>
+#include <asm/switch_to.h>
/*
* does not yet catch signals sent when the child dies.
* 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 */
+#define FPRNUMBER(i) (((i) - PT_FPR0) >> 1)
+#define FPRHALF(i) (((i) - PT_FPR0) & 1)
+#define FPRINDEX(i) TS_FPRWIDTH * FPRNUMBER(i) * 2 + FPRHALF(i)
long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
compat_ulong_t caddr, compat_ulong_t cdata)
@@ -114,7 +94,9 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
CHECK_FULL_REGS(child->thread.regs);
if (index < PT_FPR0) {
- tmp = ptrace_get_reg(child, index);
+ ret = ptrace_get_reg(child, index, &tmp);
+ if (ret)
+ break;
} else {
flush_fp_to_thread(child);
/*
@@ -122,7 +104,8 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
* to be an array of unsigned int (32 bits) - the
* index passed in is based on this assumption.
*/
- tmp = ((unsigned int *)child->thread.fpr)[index - PT_FPR0];
+ tmp = ((unsigned int *)child->thread.fp_state.fpr)
+ [FPRINDEX(index)];
}
ret = put_user((unsigned int)tmp, (u32 __user *)data);
break;
@@ -162,9 +145,14 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
CHECK_FULL_REGS(child->thread.regs);
if (numReg >= PT_FPR0) {
flush_fp_to_thread(child);
- tmp = ((unsigned long int *)child->thread.fpr)[numReg - PT_FPR0];
+ /* get 64 bit FPR */
+ tmp = child->thread.fp_state.fpr[numReg - PT_FPR0][0];
} else { /* register within PT_REGS struct */
- tmp = ptrace_get_reg(child, numReg);
+ unsigned long tmp2;
+ ret = ptrace_get_reg(child, numReg, &tmp2);
+ if (ret)
+ break;
+ tmp = tmp2;
}
reg32bits = ((u32*)&tmp)[part];
ret = put_user(reg32bits, (u32 __user *)data);
@@ -217,7 +205,8 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
* to be an array of unsigned int (32 bits) - the
* index passed in is based on this assumption.
*/
- ((unsigned int *)child->thread.fpr)[index - PT_FPR0] = data;
+ ((unsigned int *)child->thread.fp_state.fpr)
+ [FPRINDEX(index)] = data;
ret = 0;
}
break;
@@ -247,26 +236,43 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
break;
CHECK_FULL_REGS(child->thread.regs);
if (numReg < PT_FPR0) {
- unsigned long freg = ptrace_get_reg(child, numReg);
+ unsigned long freg;
+ ret = ptrace_get_reg(child, numReg, &freg);
+ if (ret)
+ break;
if (index % 2)
freg = (freg & ~0xfffffffful) | (data & 0xfffffffful);
else
freg = (freg & 0xfffffffful) | (data << 32);
ret = ptrace_put_reg(child, numReg, freg);
} else {
+ u64 *tmp;
flush_fp_to_thread(child);
- ((unsigned int *)child->thread.regs)[index] = data;
+ /* get 64 bit FPR ... */
+ tmp = &child->thread.fp_state.fpr[numReg - PT_FPR0][0];
+ /* ... write the 32 bit part we want */
+ ((u32 *)tmp)[index % 2] = data;
ret = 0;
}
break;
}
case PTRACE_GET_DEBUGREG: {
+#ifndef CONFIG_PPC_ADV_DEBUG_REGS
+ unsigned long dabr_fake;
+#endif
ret = -EINVAL;
/* We only support one DABR and no IABRS at the moment */
if (addr > 0)
break;
- ret = put_user(child->thread.dabr, (u32 __user *)data);
+#ifdef CONFIG_PPC_ADV_DEBUG_REGS
+ ret = put_user(child->thread.debug.dac1, (u32 __user *)data);
+#else
+ dabr_fake = (
+ (child->thread.hw_brk.address & (~HW_BRK_TYPE_DABR)) |
+ (child->thread.hw_brk.type & HW_BRK_TYPE_DABR));
+ ret = put_user(dabr_fake, (u32 __user *)data);
+#endif
break;
}
@@ -286,25 +292,22 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
case PTRACE_SETFPREGS:
case PTRACE_GETVRREGS:
case PTRACE_SETVRREGS:
+ case PTRACE_GETVSRREGS:
+ case PTRACE_SETVSRREGS:
case PTRACE_GETREGS64:
case PTRACE_SETREGS64:
- case PPC_PTRACE_GETFPREGS:
- case PPC_PTRACE_SETFPREGS:
case PTRACE_KILL:
case PTRACE_SINGLESTEP:
case PTRACE_DETACH:
case PTRACE_SET_DEBUGREG:
case PTRACE_SYSCALL:
case PTRACE_CONT:
+ case PPC_PTRACE_GETHWDBGINFO:
+ case PPC_PTRACE_SETHWDEBUG:
+ case PPC_PTRACE_DELHWDEBUG:
ret = arch_ptrace(child, request, addr, data);
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:
ret = compat_ptrace_request(child, request, addr, data);
break;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 10:03:09 +0000