diff options
author | Al Viro <viro@zeniv.linux.org.uk> | 2012-09-19 02:33:44 (GMT) |
---|---|---|
committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-10-01 04:53:11 (GMT) |
commit | 019f96a345b6e23d4e0bc2c136ec5f7500b95834 (patch) | |
tree | 25fe5b25d9312962b589f8e02778008414b3e75b /arch | |
parent | 460dabab73f2f60198c37ed7bf6d192d23eaa286 (diff) | |
download | linux-019f96a345b6e23d4e0bc2c136ec5f7500b95834.tar.xz |
frv: switch to generic kernel_execve
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/frv/include/asm/processor.h | 8 | ||||
-rw-r--r-- | arch/frv/include/asm/unistd.h | 1 | ||||
-rw-r--r-- | arch/frv/kernel/Makefile | 2 | ||||
-rw-r--r-- | arch/frv/kernel/entry.S | 5 | ||||
-rw-r--r-- | arch/frv/kernel/kernel_execve.S | 33 |
5 files changed, 10 insertions, 39 deletions
diff --git a/arch/frv/include/asm/processor.h b/arch/frv/include/asm/processor.h index dccb9d1..cc86e07 100644 --- a/arch/frv/include/asm/processor.h +++ b/arch/frv/include/asm/processor.h @@ -92,14 +92,12 @@ extern struct task_struct *__kernel_current_task; /* * do necessary setup to start up a newly executed thread. - * - need to discard the frame stacked by init() invoking the execve syscall */ #define start_thread(_regs, _pc, _usp) \ do { \ - __frame = __kernel_frame0_ptr; \ - __frame->pc = (_pc); \ - __frame->psr &= ~PSR_S; \ - __frame->sp = (_usp); \ + _regs->pc = (_pc); \ + _regs->psr &= ~PSR_S; \ + _regs->sp = (_usp); \ } while(0) /* Free all resources held by a thread. */ diff --git a/arch/frv/include/asm/unistd.h b/arch/frv/include/asm/unistd.h index 24b6403..b6b07e5 100644 --- a/arch/frv/include/asm/unistd.h +++ b/arch/frv/include/asm/unistd.h @@ -373,6 +373,7 @@ #define __ARCH_WANT_SYS_RT_SIGACTION #define __ARCH_WANT_SYS_RT_SIGSUSPEND #define __ARCH_WANT_SYS_EXECVE +#define __ARCH_WANT_KERNEL_EXECVE /* * "Conditional" syscalls diff --git a/arch/frv/kernel/Makefile b/arch/frv/kernel/Makefile index 7b10bc1..3cbb329 100644 --- a/arch/frv/kernel/Makefile +++ b/arch/frv/kernel/Makefile @@ -8,7 +8,7 @@ heads-$(CONFIG_MMU) := head-mmu-fr451.o extra-y:= head.o vmlinux.lds obj-y := $(heads-y) entry.o entry-table.o break.o switch_to.o \ - kernel_execve.o process.o traps.o ptrace.o signal.o dma.o \ + process.o traps.o ptrace.o signal.o dma.o \ sys_frv.o time.o setup.o frv_ksyms.o \ debug-stub.o irq.o sleep.o uaccess.o diff --git a/arch/frv/kernel/entry.S b/arch/frv/kernel/entry.S index 7a88613..0027329 100644 --- a/arch/frv/kernel/entry.S +++ b/arch/frv/kernel/entry.S @@ -871,6 +871,11 @@ ret_from_kernel_thread: calll @(gr21,gr0) bra sys_exit + .globl ret_from_kernel_execve +ret_from_kernel_execve: + ori gr28,0,sp + bra __syscall_exit + ################################################################################################### # # Return to user mode is not as complex as all this looks, diff --git a/arch/frv/kernel/kernel_execve.S b/arch/frv/kernel/kernel_execve.S deleted file mode 100644 index 9b074a1..0000000 --- a/arch/frv/kernel/kernel_execve.S +++ /dev/null @@ -1,33 +0,0 @@ -/* in-kernel program execution - * - * Copyright (C) 2006 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ - -#include <linux/linkage.h> -#include <asm/unistd.h> - -############################################################################### -# -# Do a system call from kernel instead of calling sys_execve so we end up with -# proper pt_regs. -# -# int kernel_execve(const char *filename, char *const argv[], char *const envp[]) -# -# On entry: GR8/GR9/GR10: arguments to function -# On return: GR8: syscall return. -# -############################################################################### - .globl kernel_execve - .type kernel_execve,@function -kernel_execve: - setlos __NR_execve,gr7 - tira gr0,#0 - bralr - - .size kernel_execve,.-kernel_execve |