Commit 04fcadce authored by Anshuman Khandual's avatar Anshuman Khandual Committed by Michael Ellerman

powerpc/ptrace: Adapt gpr32_get, gpr32_set functions for transaction

This patch splits gpr32_get, gpr32_set functions to accommodate
in transaction ptrace requests implemented in patches later in
the series.
Signed-off-by: default avatarAnshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: default avatarSimon Guo <wei.guo.simon@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 94b7d361
...@@ -907,25 +907,36 @@ static const struct user_regset_view user_ppc_native_view = { ...@@ -907,25 +907,36 @@ static const struct user_regset_view user_ppc_native_view = {
#ifdef CONFIG_PPC64 #ifdef CONFIG_PPC64
#include <linux/compat.h> #include <linux/compat.h>
static int gpr32_get(struct task_struct *target, static int gpr32_get_common(struct task_struct *target,
const struct user_regset *regset, const struct user_regset *regset,
unsigned int pos, unsigned int count, unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf) void *kbuf, void __user *ubuf, bool tm_active)
{ {
const unsigned long *regs = &target->thread.regs->gpr[0]; const unsigned long *regs = &target->thread.regs->gpr[0];
const unsigned long *ckpt_regs;
compat_ulong_t *k = kbuf; compat_ulong_t *k = kbuf;
compat_ulong_t __user *u = ubuf; compat_ulong_t __user *u = ubuf;
compat_ulong_t reg; compat_ulong_t reg;
int i; int i;
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
ckpt_regs = &target->thread.ckpt_regs.gpr[0];
#endif
if (tm_active) {
regs = ckpt_regs;
} else {
if (target->thread.regs == NULL) if (target->thread.regs == NULL)
return -EIO; return -EIO;
if (!FULL_REGS(target->thread.regs)) { if (!FULL_REGS(target->thread.regs)) {
/* We have a partial register set. Fill 14-31 with bogus values */ /*
* We have a partial register set.
* Fill 14-31 with bogus values.
*/
for (i = 14; i < 32; i++) for (i = 14; i < 32; i++)
target->thread.regs->gpr[i] = NV_REG_POISON; target->thread.regs->gpr[i] = NV_REG_POISON;
} }
}
pos /= sizeof(reg); pos /= sizeof(reg);
count /= sizeof(reg); count /= sizeof(reg);
...@@ -964,20 +975,31 @@ static int gpr32_get(struct task_struct *target, ...@@ -964,20 +975,31 @@ static int gpr32_get(struct task_struct *target,
PT_REGS_COUNT * sizeof(reg), -1); PT_REGS_COUNT * sizeof(reg), -1);
} }
static int gpr32_set(struct task_struct *target, static int gpr32_set_common(struct task_struct *target,
const struct user_regset *regset, const struct user_regset *regset,
unsigned int pos, unsigned int count, unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf) const void *kbuf, const void __user *ubuf, bool tm_active)
{ {
unsigned long *regs = &target->thread.regs->gpr[0]; unsigned long *regs = &target->thread.regs->gpr[0];
unsigned long *ckpt_regs;
const compat_ulong_t *k = kbuf; const compat_ulong_t *k = kbuf;
const compat_ulong_t __user *u = ubuf; const compat_ulong_t __user *u = ubuf;
compat_ulong_t reg; compat_ulong_t reg;
#ifdef CONFIG_PPC_TRANSACTIONAL_MEM
ckpt_regs = &target->thread.ckpt_regs.gpr[0];
#endif
if (tm_active) {
regs = ckpt_regs;
} else {
regs = &target->thread.regs->gpr[0];
if (target->thread.regs == NULL) if (target->thread.regs == NULL)
return -EIO; return -EIO;
CHECK_FULL_REGS(target->thread.regs); CHECK_FULL_REGS(target->thread.regs);
}
pos /= sizeof(reg); pos /= sizeof(reg);
count /= sizeof(reg); count /= sizeof(reg);
...@@ -1037,6 +1059,22 @@ static int gpr32_set(struct task_struct *target, ...@@ -1037,6 +1059,22 @@ static int gpr32_set(struct task_struct *target,
(PT_TRAP + 1) * sizeof(reg), -1); (PT_TRAP + 1) * sizeof(reg), -1);
} }
static int gpr32_get(struct task_struct *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
void *kbuf, void __user *ubuf)
{
return gpr32_get_common(target, regset, pos, count, kbuf, ubuf, 0);
}
static int gpr32_set(struct task_struct *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
const void *kbuf, const void __user *ubuf)
{
return gpr32_set_common(target, regset, pos, count, kbuf, ubuf, 0);
}
/* /*
* These are the regset flavors matching the CONFIG_PPC32 native set. * These are the regset flavors matching the CONFIG_PPC32 native set.
*/ */
......
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