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Date: Fri, 10 May 2019 18:27:56 +0300 From: "Dmitry V. Levin" <ldv@...linux.org> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Richard Kuo <rkuo@...eaurora.org>, Elvira Khabirova <lineprinter@...linux.org>, Eugene Syromyatnikov <esyr@...hat.com>, Oleg Nesterov <oleg@...hat.com>, Andy Lutomirski <luto@...nel.org>, linux-hexagon@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH v11 2/7] hexagon: define syscall_get_error() and syscall_get_return_value() syscall_get_* functions are required to be implemented on all architectures in order to extend the generic ptrace API with PTRACE_GET_SYSCALL_INFO request. This adds remaining 2 syscall_get_* functions as documented in asm-generic/syscall.h: syscall_get_error and syscall_get_return_value. Cc: Richard Kuo <rkuo@...eaurora.org> Cc: Elvira Khabirova <lineprinter@...linux.org> Cc: Eugene Syromyatnikov <esyr@...hat.com> Cc: Oleg Nesterov <oleg@...hat.com> Cc: Andy Lutomirski <luto@...nel.org> Cc: linux-hexagon@...r.kernel.org Signed-off-by: Dmitry V. Levin <ldv@...linux.org> --- Richard, this patch is waiting for ACK since November. Notes: v11: unchanged v10: unchanged v9: unchanged v8: moved syscall_get_arch to separate audit patchset v7: unchanged v6: added missing includes v5: added syscall_get_error and syscall_get_return_value v4: unchanged v3: unchanged v2: unchanged arch/hexagon/include/asm/syscall.h | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/hexagon/include/asm/syscall.h b/arch/hexagon/include/asm/syscall.h index dab26a71f577..0f28a6a39c3a 100644 --- a/arch/hexagon/include/asm/syscall.h +++ b/arch/hexagon/include/asm/syscall.h @@ -22,6 +22,8 @@ #define _ASM_HEXAGON_SYSCALL_H #include <uapi/linux/audit.h> +#include <linux/err.h> +#include <asm/ptrace.h> typedef long (*syscall_fn)(unsigned long, unsigned long, unsigned long, unsigned long, @@ -44,6 +46,18 @@ static inline void syscall_get_arguments(struct task_struct *task, memcpy(args, &(®s->r00)[0], 6 * sizeof(args[0])); } +static inline long syscall_get_error(struct task_struct *task, + struct pt_regs *regs) +{ + return IS_ERR_VALUE(regs->r00) ? regs->r00 : 0; +} + +static inline long syscall_get_return_value(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->r00; +} + static inline int syscall_get_arch(struct task_struct *task) { return AUDIT_ARCH_HEXAGON; -- ldv
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