diff options
Diffstat (limited to 'arch/powerpc/kernel/ptrace/ptrace-view.c')
| -rw-r--r-- | arch/powerpc/kernel/ptrace/ptrace-view.c | 186 |
1 files changed, 105 insertions, 81 deletions
diff --git a/arch/powerpc/kernel/ptrace/ptrace-view.c b/arch/powerpc/kernel/ptrace/ptrace-view.c index 3910cd7bb2d9..0310f9097e39 100644 --- a/arch/powerpc/kernel/ptrace/ptrace-view.c +++ b/arch/powerpc/kernel/ptrace/ptrace-view.c @@ -469,12 +469,7 @@ static int dexcr_get(struct task_struct *target, const struct user_regset *regse if (!cpu_has_feature(CPU_FTR_ARCH_31)) return -ENODEV; - /* - * The DEXCR is currently static across all CPUs, so we don't - * store the target's value anywhere, but the static value - * will also be correct. - */ - membuf_store(&to, (u64)lower_32_bits(DEXCR_INIT)); + membuf_store(&to, (u64)lower_32_bits(target->thread.dexcr)); /* * Technically the HDEXCR is per-cpu, but a hypervisor can't reasonably @@ -573,114 +568,114 @@ static int pkey_set(struct task_struct *target, const struct user_regset *regset static const struct user_regset native_regsets[] = { [REGSET_GPR] = { - .core_note_type = NT_PRSTATUS, .n = ELF_NGREG, + USER_REGSET_NOTE_TYPE(PRSTATUS), .n = ELF_NGREG, .size = sizeof(long), .align = sizeof(long), .regset_get = gpr_get, .set = gpr_set }, [REGSET_FPR] = { - .core_note_type = NT_PRFPREG, .n = ELF_NFPREG, + USER_REGSET_NOTE_TYPE(PRFPREG), .n = ELF_NFPREG, .size = sizeof(double), .align = sizeof(double), .regset_get = fpr_get, .set = fpr_set }, #ifdef CONFIG_ALTIVEC [REGSET_VMX] = { - .core_note_type = NT_PPC_VMX, .n = 34, + USER_REGSET_NOTE_TYPE(PPC_VMX), .n = 34, .size = sizeof(vector128), .align = sizeof(vector128), .active = vr_active, .regset_get = vr_get, .set = vr_set }, #endif #ifdef CONFIG_VSX [REGSET_VSX] = { - .core_note_type = NT_PPC_VSX, .n = 32, + USER_REGSET_NOTE_TYPE(PPC_VSX), .n = 32, .size = sizeof(double), .align = sizeof(double), .active = vsr_active, .regset_get = vsr_get, .set = vsr_set }, #endif #ifdef CONFIG_SPE [REGSET_SPE] = { - .core_note_type = NT_PPC_SPE, .n = 35, + USER_REGSET_NOTE_TYPE(PPC_SPE), .n = 35, .size = sizeof(u32), .align = sizeof(u32), .active = evr_active, .regset_get = evr_get, .set = evr_set }, #endif #ifdef CONFIG_PPC_TRANSACTIONAL_MEM [REGSET_TM_CGPR] = { - .core_note_type = NT_PPC_TM_CGPR, .n = ELF_NGREG, + USER_REGSET_NOTE_TYPE(PPC_TM_CGPR), .n = ELF_NGREG, .size = sizeof(long), .align = sizeof(long), .active = tm_cgpr_active, .regset_get = tm_cgpr_get, .set = tm_cgpr_set }, [REGSET_TM_CFPR] = { - .core_note_type = NT_PPC_TM_CFPR, .n = ELF_NFPREG, + USER_REGSET_NOTE_TYPE(PPC_TM_CFPR), .n = ELF_NFPREG, .size = sizeof(double), .align = sizeof(double), .active = tm_cfpr_active, .regset_get = tm_cfpr_get, .set = tm_cfpr_set }, [REGSET_TM_CVMX] = { - .core_note_type = NT_PPC_TM_CVMX, .n = ELF_NVMX, + USER_REGSET_NOTE_TYPE(PPC_TM_CVMX), .n = ELF_NVMX, .size = sizeof(vector128), .align = sizeof(vector128), .active = tm_cvmx_active, .regset_get = tm_cvmx_get, .set = tm_cvmx_set }, [REGSET_TM_CVSX] = { - .core_note_type = NT_PPC_TM_CVSX, .n = ELF_NVSX, + USER_REGSET_NOTE_TYPE(PPC_TM_CVSX), .n = ELF_NVSX, .size = sizeof(double), .align = sizeof(double), .active = tm_cvsx_active, .regset_get = tm_cvsx_get, .set = tm_cvsx_set }, [REGSET_TM_SPR] = { - .core_note_type = NT_PPC_TM_SPR, .n = ELF_NTMSPRREG, + USER_REGSET_NOTE_TYPE(PPC_TM_SPR), .n = ELF_NTMSPRREG, .size = sizeof(u64), .align = sizeof(u64), .active = tm_spr_active, .regset_get = tm_spr_get, .set = tm_spr_set }, [REGSET_TM_CTAR] = { - .core_note_type = NT_PPC_TM_CTAR, .n = 1, + USER_REGSET_NOTE_TYPE(PPC_TM_CTAR), .n = 1, .size = sizeof(u64), .align = sizeof(u64), .active = tm_tar_active, .regset_get = tm_tar_get, .set = tm_tar_set }, [REGSET_TM_CPPR] = { - .core_note_type = NT_PPC_TM_CPPR, .n = 1, + USER_REGSET_NOTE_TYPE(PPC_TM_CPPR), .n = 1, .size = sizeof(u64), .align = sizeof(u64), .active = tm_ppr_active, .regset_get = tm_ppr_get, .set = tm_ppr_set }, [REGSET_TM_CDSCR] = { - .core_note_type = NT_PPC_TM_CDSCR, .n = 1, + USER_REGSET_NOTE_TYPE(PPC_TM_CDSCR), .n = 1, .size = sizeof(u64), .align = sizeof(u64), .active = tm_dscr_active, .regset_get = tm_dscr_get, .set = tm_dscr_set }, #endif #ifdef CONFIG_PPC64 [REGSET_PPR] = { - .core_note_type = NT_PPC_PPR, .n = 1, + USER_REGSET_NOTE_TYPE(PPC_PPR), .n = 1, .size = sizeof(u64), .align = sizeof(u64), .regset_get = ppr_get, .set = ppr_set }, [REGSET_DSCR] = { - .core_note_type = NT_PPC_DSCR, .n = 1, + USER_REGSET_NOTE_TYPE(PPC_DSCR), .n = 1, .size = sizeof(u64), .align = sizeof(u64), .regset_get = dscr_get, .set = dscr_set }, #endif #ifdef CONFIG_PPC_BOOK3S_64 [REGSET_TAR] = { - .core_note_type = NT_PPC_TAR, .n = 1, + USER_REGSET_NOTE_TYPE(PPC_TAR), .n = 1, .size = sizeof(u64), .align = sizeof(u64), .regset_get = tar_get, .set = tar_set }, [REGSET_EBB] = { - .core_note_type = NT_PPC_EBB, .n = ELF_NEBB, + USER_REGSET_NOTE_TYPE(PPC_EBB), .n = ELF_NEBB, .size = sizeof(u64), .align = sizeof(u64), .active = ebb_active, .regset_get = ebb_get, .set = ebb_set }, [REGSET_PMR] = { - .core_note_type = NT_PPC_PMU, .n = ELF_NPMU, + USER_REGSET_NOTE_TYPE(PPC_PMU), .n = ELF_NPMU, .size = sizeof(u64), .align = sizeof(u64), .active = pmu_active, .regset_get = pmu_get, .set = pmu_set }, [REGSET_DEXCR] = { - .core_note_type = NT_PPC_DEXCR, .n = ELF_NDEXCR, + USER_REGSET_NOTE_TYPE(PPC_DEXCR), .n = ELF_NDEXCR, .size = sizeof(u64), .align = sizeof(u64), .active = dexcr_active, .regset_get = dexcr_get }, #ifdef CONFIG_CHECKPOINT_RESTORE [REGSET_HASHKEYR] = { - .core_note_type = NT_PPC_HASHKEYR, .n = ELF_NHASHKEYR, + USER_REGSET_NOTE_TYPE(PPC_HASHKEYR), .n = ELF_NHASHKEYR, .size = sizeof(u64), .align = sizeof(u64), .active = hashkeyr_active, .regset_get = hashkeyr_get, .set = hashkeyr_set }, @@ -688,7 +683,7 @@ static const struct user_regset native_regsets[] = { #endif #ifdef CONFIG_PPC_MEM_KEYS [REGSET_PKEY] = { - .core_note_type = NT_PPC_PKEY, .n = ELF_NPKEY, + USER_REGSET_NOTE_TYPE(PPC_PKEY), .n = ELF_NPKEY, .size = sizeof(u64), .align = sizeof(u64), .active = pkey_active, .regset_get = pkey_get, .set = pkey_set }, @@ -716,69 +711,86 @@ int gpr32_get_common(struct task_struct *target, return membuf_zero(&to, (ELF_NGREG - PT_REGS_COUNT) * sizeof(u32)); } -int gpr32_set_common(struct task_struct *target, - const struct user_regset *regset, - unsigned int pos, unsigned int count, - const void *kbuf, const void __user *ubuf, - unsigned long *regs) +static int gpr32_set_common_kernel(struct task_struct *target, + const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, unsigned long *regs) { const compat_ulong_t *k = kbuf; + + pos /= sizeof(compat_ulong_t); + count /= sizeof(compat_ulong_t); + + for (; count > 0 && pos < PT_MSR; --count) + regs[pos++] = *k++; + + if (count > 0 && pos == PT_MSR) { + set_user_msr(target, *k++); + ++pos; + --count; + } + + for (; count > 0 && pos <= PT_MAX_PUT_REG; --count) + regs[pos++] = *k++; + for (; count > 0 && pos < PT_TRAP; --count, ++pos) + ++k; + + if (count > 0 && pos == PT_TRAP) { + set_user_trap(target, *k++); + ++pos; + --count; + } + + kbuf = k; + pos *= sizeof(compat_ulong_t); + count *= sizeof(compat_ulong_t); + user_regset_copyin_ignore(&pos, &count, &kbuf, NULL, + (PT_TRAP + 1) * sizeof(compat_ulong_t), -1); + return 0; +} + +static int gpr32_set_common_user(struct task_struct *target, + const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void __user *ubuf, unsigned long *regs) +{ const compat_ulong_t __user *u = ubuf; + const void *kbuf = NULL; compat_ulong_t reg; - if (!kbuf && !user_read_access_begin(u, count)) + if (!user_read_access_begin(u, count)) return -EFAULT; pos /= sizeof(reg); count /= sizeof(reg); - if (kbuf) - for (; count > 0 && pos < PT_MSR; --count) - regs[pos++] = *k++; - else - for (; count > 0 && pos < PT_MSR; --count) { - unsafe_get_user(reg, u++, Efault); - regs[pos++] = reg; - } - + for (; count > 0 && pos < PT_MSR; --count) { + unsafe_get_user(reg, u++, Efault); + regs[pos++] = reg; + } if (count > 0 && pos == PT_MSR) { - if (kbuf) - reg = *k++; - else - unsafe_get_user(reg, u++, Efault); + unsafe_get_user(reg, u++, Efault); set_user_msr(target, reg); ++pos; --count; } - if (kbuf) { - for (; count > 0 && pos <= PT_MAX_PUT_REG; --count) - regs[pos++] = *k++; - for (; count > 0 && pos < PT_TRAP; --count, ++pos) - ++k; - } else { - for (; count > 0 && pos <= PT_MAX_PUT_REG; --count) { - unsafe_get_user(reg, u++, Efault); - regs[pos++] = reg; - } - for (; count > 0 && pos < PT_TRAP; --count, ++pos) - unsafe_get_user(reg, u++, Efault); + for (; count > 0 && pos <= PT_MAX_PUT_REG; --count) { + unsafe_get_user(reg, u++, Efault); + regs[pos++] = reg; } + for (; count > 0 && pos < PT_TRAP; --count, ++pos) + unsafe_get_user(reg, u++, Efault); if (count > 0 && pos == PT_TRAP) { - if (kbuf) - reg = *k++; - else - unsafe_get_user(reg, u++, Efault); + unsafe_get_user(reg, u++, Efault); set_user_trap(target, reg); ++pos; --count; } - if (!kbuf) - user_read_access_end(); + user_read_access_end(); - kbuf = k; ubuf = u; pos *= sizeof(reg); count *= sizeof(reg); @@ -791,6 +803,18 @@ Efault: return -EFAULT; } +int gpr32_set_common(struct task_struct *target, + const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf, + unsigned long *regs) +{ + if (kbuf) + return gpr32_set_common_kernel(target, regset, pos, count, kbuf, regs); + else + return gpr32_set_common_user(target, regset, pos, count, ubuf, regs); +} + static int gpr32_get(struct task_struct *target, const struct user_regset *regset, struct membuf to) @@ -819,92 +843,92 @@ static int gpr32_set(struct task_struct *target, */ static const struct user_regset compat_regsets[] = { [REGSET_GPR] = { - .core_note_type = NT_PRSTATUS, .n = ELF_NGREG, + USER_REGSET_NOTE_TYPE(PRSTATUS), .n = ELF_NGREG, .size = sizeof(compat_long_t), .align = sizeof(compat_long_t), .regset_get = gpr32_get, .set = gpr32_set }, [REGSET_FPR] = { - .core_note_type = NT_PRFPREG, .n = ELF_NFPREG, + USER_REGSET_NOTE_TYPE(PRFPREG), .n = ELF_NFPREG, .size = sizeof(double), .align = sizeof(double), .regset_get = fpr_get, .set = fpr_set }, #ifdef CONFIG_ALTIVEC [REGSET_VMX] = { - .core_note_type = NT_PPC_VMX, .n = 34, + USER_REGSET_NOTE_TYPE(PPC_VMX), .n = 34, .size = sizeof(vector128), .align = sizeof(vector128), .active = vr_active, .regset_get = vr_get, .set = vr_set }, #endif #ifdef CONFIG_SPE [REGSET_SPE] = { - .core_note_type = NT_PPC_SPE, .n = 35, + USER_REGSET_NOTE_TYPE(PPC_SPE), .n = 35, .size = sizeof(u32), .align = sizeof(u32), .active = evr_active, .regset_get = evr_get, .set = evr_set }, #endif #ifdef CONFIG_PPC_TRANSACTIONAL_MEM [REGSET_TM_CGPR] = { - .core_note_type = NT_PPC_TM_CGPR, .n = ELF_NGREG, + USER_REGSET_NOTE_TYPE(PPC_TM_CGPR), .n = ELF_NGREG, .size = sizeof(long), .align = sizeof(long), .active = tm_cgpr_active, .regset_get = tm_cgpr32_get, .set = tm_cgpr32_set }, [REGSET_TM_CFPR] = { - .core_note_type = NT_PPC_TM_CFPR, .n = ELF_NFPREG, + USER_REGSET_NOTE_TYPE(PPC_TM_CFPR), .n = ELF_NFPREG, .size = sizeof(double), .align = sizeof(double), .active = tm_cfpr_active, .regset_get = tm_cfpr_get, .set = tm_cfpr_set }, [REGSET_TM_CVMX] = { - .core_note_type = NT_PPC_TM_CVMX, .n = ELF_NVMX, + USER_REGSET_NOTE_TYPE(PPC_TM_CVMX), .n = ELF_NVMX, .size = sizeof(vector128), .align = sizeof(vector128), .active = tm_cvmx_active, .regset_get = tm_cvmx_get, .set = tm_cvmx_set }, [REGSET_TM_CVSX] = { - .core_note_type = NT_PPC_TM_CVSX, .n = ELF_NVSX, + USER_REGSET_NOTE_TYPE(PPC_TM_CVSX), .n = ELF_NVSX, .size = sizeof(double), .align = sizeof(double), .active = tm_cvsx_active, .regset_get = tm_cvsx_get, .set = tm_cvsx_set }, [REGSET_TM_SPR] = { - .core_note_type = NT_PPC_TM_SPR, .n = ELF_NTMSPRREG, + USER_REGSET_NOTE_TYPE(PPC_TM_SPR), .n = ELF_NTMSPRREG, .size = sizeof(u64), .align = sizeof(u64), .active = tm_spr_active, .regset_get = tm_spr_get, .set = tm_spr_set }, [REGSET_TM_CTAR] = { - .core_note_type = NT_PPC_TM_CTAR, .n = 1, + USER_REGSET_NOTE_TYPE(PPC_TM_CTAR), .n = 1, .size = sizeof(u64), .align = sizeof(u64), .active = tm_tar_active, .regset_get = tm_tar_get, .set = tm_tar_set }, [REGSET_TM_CPPR] = { - .core_note_type = NT_PPC_TM_CPPR, .n = 1, + USER_REGSET_NOTE_TYPE(PPC_TM_CPPR), .n = 1, .size = sizeof(u64), .align = sizeof(u64), .active = tm_ppr_active, .regset_get = tm_ppr_get, .set = tm_ppr_set }, [REGSET_TM_CDSCR] = { - .core_note_type = NT_PPC_TM_CDSCR, .n = 1, + USER_REGSET_NOTE_TYPE(PPC_TM_CDSCR), .n = 1, .size = sizeof(u64), .align = sizeof(u64), .active = tm_dscr_active, .regset_get = tm_dscr_get, .set = tm_dscr_set }, #endif #ifdef CONFIG_PPC64 [REGSET_PPR] = { - .core_note_type = NT_PPC_PPR, .n = 1, + USER_REGSET_NOTE_TYPE(PPC_PPR), .n = 1, .size = sizeof(u64), .align = sizeof(u64), .regset_get = ppr_get, .set = ppr_set }, [REGSET_DSCR] = { - .core_note_type = NT_PPC_DSCR, .n = 1, + USER_REGSET_NOTE_TYPE(PPC_DSCR), .n = 1, .size = sizeof(u64), .align = sizeof(u64), .regset_get = dscr_get, .set = dscr_set }, #endif #ifdef CONFIG_PPC_BOOK3S_64 [REGSET_TAR] = { - .core_note_type = NT_PPC_TAR, .n = 1, + USER_REGSET_NOTE_TYPE(PPC_TAR), .n = 1, .size = sizeof(u64), .align = sizeof(u64), .regset_get = tar_get, .set = tar_set }, [REGSET_EBB] = { - .core_note_type = NT_PPC_EBB, .n = ELF_NEBB, + USER_REGSET_NOTE_TYPE(PPC_EBB), .n = ELF_NEBB, .size = sizeof(u64), .align = sizeof(u64), .active = ebb_active, .regset_get = ebb_get, .set = ebb_set }, |