From: Christophe Leroy <christophe.leroy@c-s.fr> To: Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au>, mikey@neuling.org Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [RFC PATCH v2 04/12] powerpc/ptrace: split out VSX related functions. Date: Fri, 28 Jun 2019 15:47:53 +0000 (UTC) [thread overview] Message-ID: <920fe735d5f3dd882331b36a895bb756bd415fe7.1561735587.git.christophe.leroy@c-s.fr> (raw) In-Reply-To: <cover.1561735587.git.christophe.leroy@c-s.fr> Move CONFIG_VSX functions out of ptrace.c, into ptrace-vsx.c and ptrace-novsx.c Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- arch/powerpc/kernel/ptrace/Makefile | 4 + arch/powerpc/kernel/ptrace/ptrace-decl.h | 26 +++++ arch/powerpc/kernel/ptrace/ptrace-novsx.c | 83 ++++++++++++++ arch/powerpc/kernel/ptrace/ptrace-vsx.c | 177 ++++++++++++++++++++++++++++++ arch/powerpc/kernel/ptrace/ptrace.c | 175 +---------------------------- 5 files changed, 293 insertions(+), 172 deletions(-) create mode 100644 arch/powerpc/kernel/ptrace/ptrace-decl.h create mode 100644 arch/powerpc/kernel/ptrace/ptrace-novsx.c create mode 100644 arch/powerpc/kernel/ptrace/ptrace-vsx.c diff --git a/arch/powerpc/kernel/ptrace/Makefile b/arch/powerpc/kernel/ptrace/Makefile index 02fb28eb3b55..238c27189078 100644 --- a/arch/powerpc/kernel/ptrace/Makefile +++ b/arch/powerpc/kernel/ptrace/Makefile @@ -7,3 +7,7 @@ CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"' obj-y += ptrace.o obj-$(CONFIG_PPC64) += ptrace32.o +obj-$(CONFIG_VSX) += ptrace-vsx.o +ifneq ($(CONFIG_VSX),y) +obj-y += ptrace-novsx.o +endif diff --git a/arch/powerpc/kernel/ptrace/ptrace-decl.h b/arch/powerpc/kernel/ptrace/ptrace-decl.h new file mode 100644 index 000000000000..764df4ee9362 --- /dev/null +++ b/arch/powerpc/kernel/ptrace/ptrace-decl.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +/* ptrace-(no)vsx */ + +int fpr_get(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, void *kbuf, void __user *ubuf); +int fpr_set(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf); + +/* ptrace-vsx */ + +int vsr_active(struct task_struct *target, const struct user_regset *regset); +int vsr_get(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, void *kbuf, void __user *ubuf); +int vsr_set(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf); + +/* ptrace */ + +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM +void flush_tmregs_to_thread(struct task_struct *tsk); +#else +static inline void flush_tmregs_to_thread(struct task_struct *tsk) { } +#endif diff --git a/arch/powerpc/kernel/ptrace/ptrace-novsx.c b/arch/powerpc/kernel/ptrace/ptrace-novsx.c new file mode 100644 index 000000000000..55fbbb4aa9d7 --- /dev/null +++ b/arch/powerpc/kernel/ptrace/ptrace-novsx.c @@ -0,0 +1,83 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/errno.h> +#include <linux/ptrace.h> +#include <linux/regset.h> +#include <linux/tracehook.h> +#include <linux/elf.h> +#include <linux/user.h> +#include <linux/security.h> +#include <linux/signal.h> +#include <linux/seccomp.h> +#include <linux/audit.h> +#include <trace/syscall.h> +#include <linux/hw_breakpoint.h> +#include <linux/perf_event.h> +#include <linux/context_tracking.h> +#include <linux/nospec.h> + +#include <linux/uaccess.h> +#include <linux/pkeys.h> +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/switch_to.h> +#include <asm/tm.h> +#include <asm/asm-prototypes.h> +#include <asm/debug.h> +#include <asm/hw_breakpoint.h> + +#include <kernel/ptrace/ptrace-decl.h> + +/* + * Regardless of transactions, 'fp_state' holds the current running + * value of all FPR registers and 'ckfp_state' holds the last checkpointed + * value of all FPR registers for the current transaction. + * + * Userspace interface buffer layout: + * + * struct data { + * u64 fpr[32]; + * u64 fpscr; + * }; + */ +int fpr_get(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, void *kbuf, void __user *ubuf) +{ + BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) != + offsetof(struct thread_fp_state, fpr[32])); + + flush_fp_to_thread(target); + + return user_regset_copyout(&pos, &count, &kbuf, &ubuf, + &target->thread.fp_state, 0, -1); +} + +/* + * Regardless of transactions, 'fp_state' holds the current running + * value of all FPR registers and 'ckfp_state' holds the last checkpointed + * value of all FPR registers for the current transaction. + * + * Userspace interface buffer layout: + * + * struct data { + * u64 fpr[32]; + * u64 fpscr; + * }; + * + */ +int fpr_set(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf) +{ + BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) != + offsetof(struct thread_fp_state, fpr[32])); + + flush_fp_to_thread(target); + + return user_regset_copyin(&pos, &count, &kbuf, &ubuf, + &target->thread.fp_state, 0, -1); +} diff --git a/arch/powerpc/kernel/ptrace/ptrace-vsx.c b/arch/powerpc/kernel/ptrace/ptrace-vsx.c new file mode 100644 index 000000000000..1d94210cdf63 --- /dev/null +++ b/arch/powerpc/kernel/ptrace/ptrace-vsx.c @@ -0,0 +1,177 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/errno.h> +#include <linux/ptrace.h> +#include <linux/regset.h> +#include <linux/tracehook.h> +#include <linux/elf.h> +#include <linux/user.h> +#include <linux/security.h> +#include <linux/signal.h> +#include <linux/seccomp.h> +#include <linux/audit.h> +#include <trace/syscall.h> +#include <linux/hw_breakpoint.h> +#include <linux/perf_event.h> +#include <linux/context_tracking.h> +#include <linux/nospec.h> + +#include <linux/uaccess.h> +#include <linux/pkeys.h> +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/switch_to.h> +#include <asm/tm.h> +#include <asm/asm-prototypes.h> +#include <asm/debug.h> +#include <asm/hw_breakpoint.h> + +#include <kernel/ptrace/ptrace-decl.h> + +/* + * Regardless of transactions, 'fp_state' holds the current running + * value of all FPR registers and 'ckfp_state' holds the last checkpointed + * value of all FPR registers for the current transaction. + * + * Userspace interface buffer layout: + * + * struct data { + * u64 fpr[32]; + * u64 fpscr; + * }; + */ +int fpr_get(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, void *kbuf, void __user *ubuf) +{ + u64 buf[33]; + int i; + + flush_fp_to_thread(target); + + /* copy to local buffer then write that out */ + for (i = 0; i < 32 ; i++) + buf[i] = target->thread.TS_FPR(i); + buf[32] = target->thread.fp_state.fpscr; + return user_regset_copyout(&pos, &count, &kbuf, &ubuf, buf, 0, -1); +} + +/* + * Regardless of transactions, 'fp_state' holds the current running + * value of all FPR registers and 'ckfp_state' holds the last checkpointed + * value of all FPR registers for the current transaction. + * + * Userspace interface buffer layout: + * + * struct data { + * u64 fpr[32]; + * u64 fpscr; + * }; + * + */ +int fpr_set(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf) +{ + u64 buf[33]; + int i; + + flush_fp_to_thread(target); + + for (i = 0; i < 32 ; i++) + buf[i] = target->thread.TS_FPR(i); + buf[32] = target->thread.fp_state.fpscr; + + /* copy to local buffer then write that out */ + i = user_regset_copyin(&pos, &count, &kbuf, &ubuf, buf, 0, -1); + if (i) + return i; + + for (i = 0; i < 32 ; i++) + target->thread.TS_FPR(i) = buf[i]; + target->thread.fp_state.fpscr = buf[32]; + return 0; +} + +/* + * Currently to set and and get all the vsx state, you need to call + * the fp and VMX calls as well. This only get/sets the lower 32 + * 128bit VSX registers. + */ + +int vsr_active(struct task_struct *target, const struct user_regset *regset) +{ + flush_vsx_to_thread(target); + return target->thread.used_vsr ? regset->n : 0; +} + +/* + * Regardless of transactions, 'fp_state' holds the current running + * value of all FPR registers and 'ckfp_state' holds the last + * checkpointed value of all FPR registers for the current + * transaction. + * + * Userspace interface buffer layout: + * + * struct data { + * u64 vsx[32]; + * }; + */ +int vsr_get(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, void *kbuf, void __user *ubuf) +{ + u64 buf[32]; + int ret, i; + + flush_tmregs_to_thread(target); + flush_fp_to_thread(target); + flush_altivec_to_thread(target); + flush_vsx_to_thread(target); + + for (i = 0; i < 32 ; i++) + buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET]; + + ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, + buf, 0, 32 * sizeof(double)); + + return ret; +} + +/* + * Regardless of transactions, 'fp_state' holds the current running + * value of all FPR registers and 'ckfp_state' holds the last + * checkpointed value of all FPR registers for the current + * transaction. + * + * Userspace interface buffer layout: + * + * struct data { + * u64 vsx[32]; + * }; + */ +int vsr_set(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf) +{ + u64 buf[32]; + int ret,i; + + flush_tmregs_to_thread(target); + flush_fp_to_thread(target); + flush_altivec_to_thread(target); + flush_vsx_to_thread(target); + + for (i = 0; i < 32 ; i++) + buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET]; + + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, + buf, 0, 32 * sizeof(double)); + if (!ret) + for (i = 0; i < 32 ; i++) + target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i]; + + return ret; +} diff --git a/arch/powerpc/kernel/ptrace/ptrace.c b/arch/powerpc/kernel/ptrace/ptrace.c index cc8efcb404d6..3d0a0b8f8c07 100644 --- a/arch/powerpc/kernel/ptrace/ptrace.c +++ b/arch/powerpc/kernel/ptrace/ptrace.c @@ -48,6 +48,8 @@ #define CREATE_TRACE_POINTS #include <trace/events/syscalls.h> +#include <kernel/ptrace/ptrace-decl.h> + struct pt_regs_offset { const char *name; int offset; @@ -112,7 +114,7 @@ static const struct pt_regs_offset regoffset_table[] = { }; #ifdef CONFIG_PPC_TRANSACTIONAL_MEM -static void flush_tmregs_to_thread(struct task_struct *tsk) +void flush_tmregs_to_thread(struct task_struct *tsk) { /* * If task is not current, it will have been flushed already to @@ -132,8 +134,6 @@ static void flush_tmregs_to_thread(struct task_struct *tsk) tm_save_sprs(&(tsk->thread)); } } -#else -static inline void flush_tmregs_to_thread(struct task_struct *tsk) { } #endif /** @@ -415,91 +415,6 @@ static int gpr_set(struct task_struct *target, const struct user_regset *regset, return ret; } -/* - * Regardless of transactions, 'fp_state' holds the current running - * value of all FPR registers and 'ckfp_state' holds the last checkpointed - * value of all FPR registers for the current transaction. - * - * Userspace interface buffer layout: - * - * struct data { - * u64 fpr[32]; - * u64 fpscr; - * }; - */ -static int fpr_get(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) -{ -#ifdef CONFIG_VSX - u64 buf[33]; - int i; - - flush_fp_to_thread(target); - - /* copy to local buffer then write that out */ - for (i = 0; i < 32 ; i++) - buf[i] = target->thread.TS_FPR(i); - buf[32] = target->thread.fp_state.fpscr; - return user_regset_copyout(&pos, &count, &kbuf, &ubuf, buf, 0, -1); -#else - BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) != - offsetof(struct thread_fp_state, fpr[32])); - - flush_fp_to_thread(target); - - return user_regset_copyout(&pos, &count, &kbuf, &ubuf, - &target->thread.fp_state, 0, -1); -#endif -} - -/* - * Regardless of transactions, 'fp_state' holds the current running - * value of all FPR registers and 'ckfp_state' holds the last checkpointed - * value of all FPR registers for the current transaction. - * - * Userspace interface buffer layout: - * - * struct data { - * u64 fpr[32]; - * u64 fpscr; - * }; - * - */ -static int fpr_set(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - const void *kbuf, const void __user *ubuf) -{ -#ifdef CONFIG_VSX - u64 buf[33]; - int i; - - flush_fp_to_thread(target); - - for (i = 0; i < 32 ; i++) - buf[i] = target->thread.TS_FPR(i); - buf[32] = target->thread.fp_state.fpscr; - - /* copy to local buffer then write that out */ - i = user_regset_copyin(&pos, &count, &kbuf, &ubuf, buf, 0, -1); - if (i) - return i; - - for (i = 0; i < 32 ; i++) - target->thread.TS_FPR(i) = buf[i]; - target->thread.fp_state.fpscr = buf[32]; - return 0; -#else - BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) != - offsetof(struct thread_fp_state, fpr[32])); - - flush_fp_to_thread(target); - - return user_regset_copyin(&pos, &count, &kbuf, &ubuf, - &target->thread.fp_state, 0, -1); -#endif -} - #ifdef CONFIG_ALTIVEC /* * Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go. @@ -624,90 +539,6 @@ static int vr_set(struct task_struct *target, const struct user_regset *regset, } #endif /* CONFIG_ALTIVEC */ -#ifdef CONFIG_VSX -/* - * Currently to set and and get all the vsx state, you need to call - * the fp and VMX calls as well. This only get/sets the lower 32 - * 128bit VSX registers. - */ - -static int vsr_active(struct task_struct *target, - const struct user_regset *regset) -{ - flush_vsx_to_thread(target); - return target->thread.used_vsr ? regset->n : 0; -} - -/* - * Regardless of transactions, 'fp_state' holds the current running - * value of all FPR registers and 'ckfp_state' holds the last - * checkpointed value of all FPR registers for the current - * transaction. - * - * Userspace interface buffer layout: - * - * struct data { - * u64 vsx[32]; - * }; - */ -static int vsr_get(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) -{ - u64 buf[32]; - int ret, i; - - flush_tmregs_to_thread(target); - flush_fp_to_thread(target); - flush_altivec_to_thread(target); - flush_vsx_to_thread(target); - - for (i = 0; i < 32 ; i++) - buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET]; - - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - buf, 0, 32 * sizeof(double)); - - return ret; -} - -/* - * Regardless of transactions, 'fp_state' holds the current running - * value of all FPR registers and 'ckfp_state' holds the last - * checkpointed value of all FPR registers for the current - * transaction. - * - * Userspace interface buffer layout: - * - * struct data { - * u64 vsx[32]; - * }; - */ -static int vsr_set(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - const void *kbuf, const void __user *ubuf) -{ - u64 buf[32]; - int ret,i; - - flush_tmregs_to_thread(target); - flush_fp_to_thread(target); - flush_altivec_to_thread(target); - flush_vsx_to_thread(target); - - for (i = 0; i < 32 ; i++) - buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET]; - - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - buf, 0, 32 * sizeof(double)); - if (!ret) - for (i = 0; i < 32 ; i++) - target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i]; - - return ret; -} -#endif /* CONFIG_VSX */ - #ifdef CONFIG_SPE /* -- 2.13.3
WARNING: multiple messages have this Message-ID (diff)
From: Christophe Leroy <christophe.leroy@c-s.fr> To: Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, Michael Ellerman <mpe@ellerman.id.au>, mikey@neuling.org Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH v2 04/12] powerpc/ptrace: split out VSX related functions. Date: Fri, 28 Jun 2019 15:47:53 +0000 (UTC) [thread overview] Message-ID: <920fe735d5f3dd882331b36a895bb756bd415fe7.1561735587.git.christophe.leroy@c-s.fr> (raw) In-Reply-To: <cover.1561735587.git.christophe.leroy@c-s.fr> Move CONFIG_VSX functions out of ptrace.c, into ptrace-vsx.c and ptrace-novsx.c Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> --- arch/powerpc/kernel/ptrace/Makefile | 4 + arch/powerpc/kernel/ptrace/ptrace-decl.h | 26 +++++ arch/powerpc/kernel/ptrace/ptrace-novsx.c | 83 ++++++++++++++ arch/powerpc/kernel/ptrace/ptrace-vsx.c | 177 ++++++++++++++++++++++++++++++ arch/powerpc/kernel/ptrace/ptrace.c | 175 +---------------------------- 5 files changed, 293 insertions(+), 172 deletions(-) create mode 100644 arch/powerpc/kernel/ptrace/ptrace-decl.h create mode 100644 arch/powerpc/kernel/ptrace/ptrace-novsx.c create mode 100644 arch/powerpc/kernel/ptrace/ptrace-vsx.c diff --git a/arch/powerpc/kernel/ptrace/Makefile b/arch/powerpc/kernel/ptrace/Makefile index 02fb28eb3b55..238c27189078 100644 --- a/arch/powerpc/kernel/ptrace/Makefile +++ b/arch/powerpc/kernel/ptrace/Makefile @@ -7,3 +7,7 @@ CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"' obj-y += ptrace.o obj-$(CONFIG_PPC64) += ptrace32.o +obj-$(CONFIG_VSX) += ptrace-vsx.o +ifneq ($(CONFIG_VSX),y) +obj-y += ptrace-novsx.o +endif diff --git a/arch/powerpc/kernel/ptrace/ptrace-decl.h b/arch/powerpc/kernel/ptrace/ptrace-decl.h new file mode 100644 index 000000000000..764df4ee9362 --- /dev/null +++ b/arch/powerpc/kernel/ptrace/ptrace-decl.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +/* ptrace-(no)vsx */ + +int fpr_get(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, void *kbuf, void __user *ubuf); +int fpr_set(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf); + +/* ptrace-vsx */ + +int vsr_active(struct task_struct *target, const struct user_regset *regset); +int vsr_get(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, void *kbuf, void __user *ubuf); +int vsr_set(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf); + +/* ptrace */ + +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM +void flush_tmregs_to_thread(struct task_struct *tsk); +#else +static inline void flush_tmregs_to_thread(struct task_struct *tsk) { } +#endif diff --git a/arch/powerpc/kernel/ptrace/ptrace-novsx.c b/arch/powerpc/kernel/ptrace/ptrace-novsx.c new file mode 100644 index 000000000000..55fbbb4aa9d7 --- /dev/null +++ b/arch/powerpc/kernel/ptrace/ptrace-novsx.c @@ -0,0 +1,83 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/errno.h> +#include <linux/ptrace.h> +#include <linux/regset.h> +#include <linux/tracehook.h> +#include <linux/elf.h> +#include <linux/user.h> +#include <linux/security.h> +#include <linux/signal.h> +#include <linux/seccomp.h> +#include <linux/audit.h> +#include <trace/syscall.h> +#include <linux/hw_breakpoint.h> +#include <linux/perf_event.h> +#include <linux/context_tracking.h> +#include <linux/nospec.h> + +#include <linux/uaccess.h> +#include <linux/pkeys.h> +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/switch_to.h> +#include <asm/tm.h> +#include <asm/asm-prototypes.h> +#include <asm/debug.h> +#include <asm/hw_breakpoint.h> + +#include <kernel/ptrace/ptrace-decl.h> + +/* + * Regardless of transactions, 'fp_state' holds the current running + * value of all FPR registers and 'ckfp_state' holds the last checkpointed + * value of all FPR registers for the current transaction. + * + * Userspace interface buffer layout: + * + * struct data { + * u64 fpr[32]; + * u64 fpscr; + * }; + */ +int fpr_get(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, void *kbuf, void __user *ubuf) +{ + BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) != + offsetof(struct thread_fp_state, fpr[32])); + + flush_fp_to_thread(target); + + return user_regset_copyout(&pos, &count, &kbuf, &ubuf, + &target->thread.fp_state, 0, -1); +} + +/* + * Regardless of transactions, 'fp_state' holds the current running + * value of all FPR registers and 'ckfp_state' holds the last checkpointed + * value of all FPR registers for the current transaction. + * + * Userspace interface buffer layout: + * + * struct data { + * u64 fpr[32]; + * u64 fpscr; + * }; + * + */ +int fpr_set(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf) +{ + BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) != + offsetof(struct thread_fp_state, fpr[32])); + + flush_fp_to_thread(target); + + return user_regset_copyin(&pos, &count, &kbuf, &ubuf, + &target->thread.fp_state, 0, -1); +} diff --git a/arch/powerpc/kernel/ptrace/ptrace-vsx.c b/arch/powerpc/kernel/ptrace/ptrace-vsx.c new file mode 100644 index 000000000000..1d94210cdf63 --- /dev/null +++ b/arch/powerpc/kernel/ptrace/ptrace-vsx.c @@ -0,0 +1,177 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/errno.h> +#include <linux/ptrace.h> +#include <linux/regset.h> +#include <linux/tracehook.h> +#include <linux/elf.h> +#include <linux/user.h> +#include <linux/security.h> +#include <linux/signal.h> +#include <linux/seccomp.h> +#include <linux/audit.h> +#include <trace/syscall.h> +#include <linux/hw_breakpoint.h> +#include <linux/perf_event.h> +#include <linux/context_tracking.h> +#include <linux/nospec.h> + +#include <linux/uaccess.h> +#include <linux/pkeys.h> +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/switch_to.h> +#include <asm/tm.h> +#include <asm/asm-prototypes.h> +#include <asm/debug.h> +#include <asm/hw_breakpoint.h> + +#include <kernel/ptrace/ptrace-decl.h> + +/* + * Regardless of transactions, 'fp_state' holds the current running + * value of all FPR registers and 'ckfp_state' holds the last checkpointed + * value of all FPR registers for the current transaction. + * + * Userspace interface buffer layout: + * + * struct data { + * u64 fpr[32]; + * u64 fpscr; + * }; + */ +int fpr_get(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, void *kbuf, void __user *ubuf) +{ + u64 buf[33]; + int i; + + flush_fp_to_thread(target); + + /* copy to local buffer then write that out */ + for (i = 0; i < 32 ; i++) + buf[i] = target->thread.TS_FPR(i); + buf[32] = target->thread.fp_state.fpscr; + return user_regset_copyout(&pos, &count, &kbuf, &ubuf, buf, 0, -1); +} + +/* + * Regardless of transactions, 'fp_state' holds the current running + * value of all FPR registers and 'ckfp_state' holds the last checkpointed + * value of all FPR registers for the current transaction. + * + * Userspace interface buffer layout: + * + * struct data { + * u64 fpr[32]; + * u64 fpscr; + * }; + * + */ +int fpr_set(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf) +{ + u64 buf[33]; + int i; + + flush_fp_to_thread(target); + + for (i = 0; i < 32 ; i++) + buf[i] = target->thread.TS_FPR(i); + buf[32] = target->thread.fp_state.fpscr; + + /* copy to local buffer then write that out */ + i = user_regset_copyin(&pos, &count, &kbuf, &ubuf, buf, 0, -1); + if (i) + return i; + + for (i = 0; i < 32 ; i++) + target->thread.TS_FPR(i) = buf[i]; + target->thread.fp_state.fpscr = buf[32]; + return 0; +} + +/* + * Currently to set and and get all the vsx state, you need to call + * the fp and VMX calls as well. This only get/sets the lower 32 + * 128bit VSX registers. + */ + +int vsr_active(struct task_struct *target, const struct user_regset *regset) +{ + flush_vsx_to_thread(target); + return target->thread.used_vsr ? regset->n : 0; +} + +/* + * Regardless of transactions, 'fp_state' holds the current running + * value of all FPR registers and 'ckfp_state' holds the last + * checkpointed value of all FPR registers for the current + * transaction. + * + * Userspace interface buffer layout: + * + * struct data { + * u64 vsx[32]; + * }; + */ +int vsr_get(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, void *kbuf, void __user *ubuf) +{ + u64 buf[32]; + int ret, i; + + flush_tmregs_to_thread(target); + flush_fp_to_thread(target); + flush_altivec_to_thread(target); + flush_vsx_to_thread(target); + + for (i = 0; i < 32 ; i++) + buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET]; + + ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, + buf, 0, 32 * sizeof(double)); + + return ret; +} + +/* + * Regardless of transactions, 'fp_state' holds the current running + * value of all FPR registers and 'ckfp_state' holds the last + * checkpointed value of all FPR registers for the current + * transaction. + * + * Userspace interface buffer layout: + * + * struct data { + * u64 vsx[32]; + * }; + */ +int vsr_set(struct task_struct *target, const struct user_regset *regset, + unsigned int pos, unsigned int count, + const void *kbuf, const void __user *ubuf) +{ + u64 buf[32]; + int ret,i; + + flush_tmregs_to_thread(target); + flush_fp_to_thread(target); + flush_altivec_to_thread(target); + flush_vsx_to_thread(target); + + for (i = 0; i < 32 ; i++) + buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET]; + + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, + buf, 0, 32 * sizeof(double)); + if (!ret) + for (i = 0; i < 32 ; i++) + target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i]; + + return ret; +} diff --git a/arch/powerpc/kernel/ptrace/ptrace.c b/arch/powerpc/kernel/ptrace/ptrace.c index cc8efcb404d6..3d0a0b8f8c07 100644 --- a/arch/powerpc/kernel/ptrace/ptrace.c +++ b/arch/powerpc/kernel/ptrace/ptrace.c @@ -48,6 +48,8 @@ #define CREATE_TRACE_POINTS #include <trace/events/syscalls.h> +#include <kernel/ptrace/ptrace-decl.h> + struct pt_regs_offset { const char *name; int offset; @@ -112,7 +114,7 @@ static const struct pt_regs_offset regoffset_table[] = { }; #ifdef CONFIG_PPC_TRANSACTIONAL_MEM -static void flush_tmregs_to_thread(struct task_struct *tsk) +void flush_tmregs_to_thread(struct task_struct *tsk) { /* * If task is not current, it will have been flushed already to @@ -132,8 +134,6 @@ static void flush_tmregs_to_thread(struct task_struct *tsk) tm_save_sprs(&(tsk->thread)); } } -#else -static inline void flush_tmregs_to_thread(struct task_struct *tsk) { } #endif /** @@ -415,91 +415,6 @@ static int gpr_set(struct task_struct *target, const struct user_regset *regset, return ret; } -/* - * Regardless of transactions, 'fp_state' holds the current running - * value of all FPR registers and 'ckfp_state' holds the last checkpointed - * value of all FPR registers for the current transaction. - * - * Userspace interface buffer layout: - * - * struct data { - * u64 fpr[32]; - * u64 fpscr; - * }; - */ -static int fpr_get(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) -{ -#ifdef CONFIG_VSX - u64 buf[33]; - int i; - - flush_fp_to_thread(target); - - /* copy to local buffer then write that out */ - for (i = 0; i < 32 ; i++) - buf[i] = target->thread.TS_FPR(i); - buf[32] = target->thread.fp_state.fpscr; - return user_regset_copyout(&pos, &count, &kbuf, &ubuf, buf, 0, -1); -#else - BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) != - offsetof(struct thread_fp_state, fpr[32])); - - flush_fp_to_thread(target); - - return user_regset_copyout(&pos, &count, &kbuf, &ubuf, - &target->thread.fp_state, 0, -1); -#endif -} - -/* - * Regardless of transactions, 'fp_state' holds the current running - * value of all FPR registers and 'ckfp_state' holds the last checkpointed - * value of all FPR registers for the current transaction. - * - * Userspace interface buffer layout: - * - * struct data { - * u64 fpr[32]; - * u64 fpscr; - * }; - * - */ -static int fpr_set(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - const void *kbuf, const void __user *ubuf) -{ -#ifdef CONFIG_VSX - u64 buf[33]; - int i; - - flush_fp_to_thread(target); - - for (i = 0; i < 32 ; i++) - buf[i] = target->thread.TS_FPR(i); - buf[32] = target->thread.fp_state.fpscr; - - /* copy to local buffer then write that out */ - i = user_regset_copyin(&pos, &count, &kbuf, &ubuf, buf, 0, -1); - if (i) - return i; - - for (i = 0; i < 32 ; i++) - target->thread.TS_FPR(i) = buf[i]; - target->thread.fp_state.fpscr = buf[32]; - return 0; -#else - BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) != - offsetof(struct thread_fp_state, fpr[32])); - - flush_fp_to_thread(target); - - return user_regset_copyin(&pos, &count, &kbuf, &ubuf, - &target->thread.fp_state, 0, -1); -#endif -} - #ifdef CONFIG_ALTIVEC /* * Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go. @@ -624,90 +539,6 @@ static int vr_set(struct task_struct *target, const struct user_regset *regset, } #endif /* CONFIG_ALTIVEC */ -#ifdef CONFIG_VSX -/* - * Currently to set and and get all the vsx state, you need to call - * the fp and VMX calls as well. This only get/sets the lower 32 - * 128bit VSX registers. - */ - -static int vsr_active(struct task_struct *target, - const struct user_regset *regset) -{ - flush_vsx_to_thread(target); - return target->thread.used_vsr ? regset->n : 0; -} - -/* - * Regardless of transactions, 'fp_state' holds the current running - * value of all FPR registers and 'ckfp_state' holds the last - * checkpointed value of all FPR registers for the current - * transaction. - * - * Userspace interface buffer layout: - * - * struct data { - * u64 vsx[32]; - * }; - */ -static int vsr_get(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - void *kbuf, void __user *ubuf) -{ - u64 buf[32]; - int ret, i; - - flush_tmregs_to_thread(target); - flush_fp_to_thread(target); - flush_altivec_to_thread(target); - flush_vsx_to_thread(target); - - for (i = 0; i < 32 ; i++) - buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET]; - - ret = user_regset_copyout(&pos, &count, &kbuf, &ubuf, - buf, 0, 32 * sizeof(double)); - - return ret; -} - -/* - * Regardless of transactions, 'fp_state' holds the current running - * value of all FPR registers and 'ckfp_state' holds the last - * checkpointed value of all FPR registers for the current - * transaction. - * - * Userspace interface buffer layout: - * - * struct data { - * u64 vsx[32]; - * }; - */ -static int vsr_set(struct task_struct *target, const struct user_regset *regset, - unsigned int pos, unsigned int count, - const void *kbuf, const void __user *ubuf) -{ - u64 buf[32]; - int ret,i; - - flush_tmregs_to_thread(target); - flush_fp_to_thread(target); - flush_altivec_to_thread(target); - flush_vsx_to_thread(target); - - for (i = 0; i < 32 ; i++) - buf[i] = target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET]; - - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, - buf, 0, 32 * sizeof(double)); - if (!ret) - for (i = 0; i < 32 ; i++) - target->thread.fp_state.fpr[i][TS_VSRLOWOFFSET] = buf[i]; - - return ret; -} -#endif /* CONFIG_VSX */ - #ifdef CONFIG_SPE /* -- 2.13.3
next prev parent reply other threads:[~2019-06-28 15:48 UTC|newest] Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-06-28 15:47 [RFC PATCH v2 00/12] Reduce ifdef mess in ptrace Christophe Leroy 2019-06-28 15:47 ` Christophe Leroy 2019-06-28 15:47 ` [RFC PATCH v2 01/12] powerpc: move ptrace into a subdirectory Christophe Leroy 2019-06-28 15:47 ` Christophe Leroy 2019-06-28 15:47 ` [RFC PATCH v2 02/12] powerpc/ptrace: drop unnecessary #ifdefs CONFIG_PPC64 Christophe Leroy 2019-06-28 15:47 ` Christophe Leroy 2019-06-28 16:36 ` Andreas Schwab 2019-06-28 16:36 ` Andreas Schwab 2019-06-28 16:39 ` Christophe Leroy 2019-06-28 16:39 ` Christophe Leroy 2019-06-28 17:08 ` Andreas Schwab 2019-06-28 17:08 ` Andreas Schwab 2020-02-24 10:48 ` Michael Ellerman 2020-02-24 10:48 ` Michael Ellerman 2020-02-26 12:06 ` Christophe Leroy 2020-02-26 12:06 ` Christophe Leroy 2019-06-28 15:47 ` [RFC PATCH v2 03/12] powerpc/ptrace: drop PARAMETER_SAVE_AREA_OFFSET Christophe Leroy 2019-06-28 15:47 ` Christophe Leroy 2019-06-28 15:47 ` Christophe Leroy [this message] 2019-06-28 15:47 ` [RFC PATCH v2 04/12] powerpc/ptrace: split out VSX related functions Christophe Leroy 2020-02-24 10:51 ` Michael Ellerman 2020-02-24 10:51 ` Michael Ellerman 2020-02-26 12:04 ` Christophe Leroy 2020-02-26 12:04 ` Christophe Leroy 2019-06-28 15:47 ` [RFC PATCH v2 05/12] powerpc/ptrace: split out ALTIVEC " Christophe Leroy 2019-06-28 15:47 ` Christophe Leroy 2019-06-28 15:47 ` [RFC PATCH v2 06/12] powerpc/ptrace: split out SPE " Christophe Leroy 2019-06-28 15:47 ` Christophe Leroy 2019-06-28 15:47 ` [RFC PATCH v2 07/12] powerpc/ptrace: split out TRANSACTIONAL_MEM " Christophe Leroy 2019-06-28 15:47 ` Christophe Leroy 2019-06-28 15:47 ` [RFC PATCH v2 08/12] powerpc/ptrace: move register viewing functions out of ptrace.c Christophe Leroy 2019-06-28 15:47 ` Christophe Leroy 2019-06-28 15:47 ` [RFC PATCH v2 09/12] powerpc/ptrace: split out ADV_DEBUG_REGS related functions Christophe Leroy 2019-06-28 15:47 ` Christophe Leroy 2019-07-03 2:52 ` Ravi Bangoria 2019-07-03 2:52 ` Ravi Bangoria 2019-06-28 15:47 ` [RFC PATCH v2 10/12] powerpc/ptrace: create ptrace_get_debugreg() Christophe Leroy 2019-06-28 15:47 ` Christophe Leroy 2019-07-03 3:03 ` Ravi Bangoria 2019-07-03 3:03 ` Ravi Bangoria 2019-06-28 15:48 ` [RFC PATCH v2 11/12] powerpc/ptrace: create ppc_gethwdinfo() Christophe Leroy 2019-06-28 15:48 ` Christophe Leroy 2019-07-03 3:18 ` Ravi Bangoria 2019-07-03 3:18 ` Ravi Bangoria 2019-06-28 15:48 ` [RFC PATCH v2 12/12] powerpc/ptrace: move ptrace_triggered() into hw_breakpoint.c Christophe Leroy 2019-06-28 15:48 ` Christophe Leroy 2019-07-03 3:05 ` Ravi Bangoria 2019-07-03 3:05 ` Ravi Bangoria 2019-07-03 6:29 ` [RFC PATCH v2 00/12] Reduce ifdef mess in ptrace Ravi Bangoria 2019-07-03 6:29 ` Ravi Bangoria 2020-02-17 6:49 ` Christophe Leroy 2020-02-17 6:49 ` Christophe Leroy 2020-02-24 2:15 ` Michael Neuling 2020-02-24 2:15 ` Michael Neuling 2020-02-24 5:58 ` Christophe Leroy 2020-02-24 5:58 ` Christophe Leroy 2020-02-24 10:54 ` Michael Ellerman 2020-02-24 10:54 ` Michael Ellerman 2020-02-26 12:03 ` Christophe Leroy 2020-02-26 12:03 ` Christophe Leroy
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