diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/frv/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/frv/kernel/kernel_execve.S | 33 | ||||
| -rw-r--r-- | arch/h8300/kernel/sys_h8300.c | 24 | ||||
| -rw-r--r-- | arch/i386/kernel/sys_i386.c | 15 | ||||
| -rw-r--r-- | arch/m32r/kernel/sys_m32r.c | 20 | ||||
| -rw-r--r-- | arch/m68k/kernel/sys_m68k.c | 16 | ||||
| -rw-r--r-- | arch/m68knommu/kernel/sys_m68k.c | 15 | ||||
| -rw-r--r-- | arch/mips/kernel/syscall.c | 29 | ||||
| -rw-r--r-- | arch/ppc/kernel/misc.S | 18 | ||||
| -rw-r--r-- | arch/s390/kernel/sys_s390.c | 20 | ||||
| -rw-r--r-- | arch/sh/kernel/sys_sh.c | 17 | ||||
| -rw-r--r-- | arch/sh64/kernel/sys_sh64.c | 19 | ||||
| -rw-r--r-- | arch/sparc/kernel/sys_sparc.c | 23 | ||||
| -rw-r--r-- | arch/sparc64/kernel/sys_sparc.c | 21 | ||||
| -rw-r--r-- | arch/v850/kernel/syscalls.c | 20 | ||||
| -rw-r--r-- | arch/xtensa/kernel/syscalls.c | 20 |
16 files changed, 300 insertions, 12 deletions
diff --git a/arch/frv/kernel/Makefile b/arch/frv/kernel/Makefile index 32db349..e8f73ed 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 init_task.o vmlinux.lds obj-y := $(heads-y) entry.o entry-table.o break.o switch_to.o kernel_thread.o \ - process.o traps.o ptrace.o signal.o dma.o \ + kernel_execve.o process.o traps.o ptrace.o signal.o dma.o \ sys_frv.o time.o semaphore.o setup.o frv_ksyms.o \ debug-stub.o irq.o sleep.o uaccess.o diff --git a/arch/frv/kernel/kernel_execve.S b/arch/frv/kernel/kernel_execve.S new file mode 100644 index 0000000..9b074a1 --- /dev/null +++ b/arch/frv/kernel/kernel_execve.S @@ -0,0 +1,33 @@ +/* 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 diff --git a/arch/h8300/kernel/sys_h8300.c b/arch/h8300/kernel/sys_h8300.c index 0f61b7a..302a2df 100644 --- a/arch/h8300/kernel/sys_h8300.c +++ b/arch/h8300/kernel/sys_h8300.c @@ -25,6 +25,7 @@ #include <asm/cachectl.h> #include <asm/traps.h> #include <asm/ipc.h> +#include <asm/unistd.h> /* * sys_pipe() is the normal C calling standard for creating @@ -280,3 +281,26 @@ asmlinkage void syscall_print(void *dummy,...) ((regs->pc)&0xffffff)-2,regs->orig_er0,regs->er1,regs->er2,regs->er3,regs->er0); } #endif + +/* + * 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[]) +{ + register long res __asm__("er0"); + register const char * _a __asm__("er1") = filename; + register void *_b __asm__("er2") = argv; + register void *_c __asm__("er3") = envp; + __asm__ __volatile__ ("mov.l %1,er0\n\t" + "trapa #0\n\t" + : "=r" (res) + : "g" (__NR_execve), + "g" (_a), + "g" (_b), + "g" (_c) + : "cc", "memory"); + return res; +} + + diff --git a/arch/i386/kernel/sys_i386.c b/arch/i386/kernel/sys_i386.c index dc6e3bb..4048397 100644 --- a/arch/i386/kernel/sys_i386.c +++ b/arch/i386/kernel/sys_i386.c @@ -21,6 +21,7 @@ #include <linux/utsname.h> #include <asm/uaccess.h> +#include <asm/unistd.h> #include <asm/ipc.h> /* @@ -248,3 +249,17 @@ asmlinkage int sys_olduname(struct oldold_utsname __user * name) return error; } + + +/* + * 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[]) +{ + long __res; + asm volatile ("push %%ebx ; movl %2,%%ebx ; int $0x80 ; pop %%ebx" + : "=a" (__res) + : "0" (__NR_execve),"ri" (filename),"c" (argv), "d" (envp) : "memory"); + return __res; +} diff --git a/arch/m32r/kernel/sys_m32r.c b/arch/m32r/kernel/sys_m32r.c index 7c29396..b567351 100644 --- a/arch/m32r/kernel/sys_m32r.c +++ b/arch/m32r/kernel/sys_m32r.c @@ -25,6 +25,8 @@ #include <asm/cachectl.h> #include <asm/cacheflush.h> #include <asm/ipc.h> +#include <asm/syscall.h> +#include <asm/unistd.h> /* * sys_tas() - test-and-set @@ -223,3 +225,21 @@ asmlinkage int sys_cachectl(char *addr, int nbytes, int op) return -ENOSYS; } +/* + * 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[]) +{ + register long __scno __asm__ ("r7") = __NR_execve; + register long __arg3 __asm__ ("r2") = (long)(envp); + register long __arg2 __asm__ ("r1") = (long)(argv); + register long __res __asm__ ("r0") = (long)(filename); + __asm__ __volatile__ ( + "trap #" SYSCALL_VECTOR "|| nop" + : "=r" (__res) + : "r" (__scno), "0" (__res), "r" (__arg2), + "r" (__arg3) + : "memory"); + return __res; +} diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c index 143c552..90238a8 100644 --- a/arch/m68k/kernel/sys_m68k.c +++ b/arch/m68k/kernel/sys_m68k.c @@ -27,6 +27,7 @@ #include <asm/traps.h> #include <asm/ipc.h> #include <asm/page.h> +#include <asm/unistd.h> /* * sys_pipe() is the normal C calling standard for creating @@ -663,3 +664,18 @@ asmlinkage int sys_getpagesize(void) { return PAGE_SIZE; } + +/* + * 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[]) +{ + register long __res asm ("%d0") = __NR_execve; + register long __a asm ("%d1") = (long)(filename); + register long __b asm ("%d2") = (long)(argv); + register long __c asm ("%d3") = (long)(envp); + asm volatile ("trap #0" : "+d" (__res) + : "d" (__a), "d" (__b), "d" (__c)); + return __res; +} diff --git a/arch/m68knommu/kernel/sys_m68k.c b/arch/m68knommu/kernel/sys_m68k.c index d87e1e0..c3494b8 100644 --- a/arch/m68knommu/kernel/sys_m68k.c +++ b/arch/m68knommu/kernel/sys_m68k.c @@ -26,6 +26,7 @@ #include <asm/traps.h> #include <asm/ipc.h> #include <asm/cacheflush.h> +#include <asm/unistd.h> /* * sys_pipe() is the normal C calling standard for creating @@ -206,3 +207,17 @@ asmlinkage int sys_getpagesize(void) return PAGE_SIZE; } +/* + * 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[]) +{ + register long __res asm ("%d0") = __NR_execve; + register long __a asm ("%d1") = (long)(filename); + register long __b asm ("%d2") = (long)(argv); + register long __c asm ("%d3") = (long)(envp); + asm volatile ("trap #0" : "+d" (__res) + : "d" (__a), "d" (__b), "d" (__c)); + return __res; +} diff --git a/arch/mips/kernel/syscall.c b/arch/mips/kernel/syscall.c index 970e3e9..26e1a7e 100644 --- a/arch/mips/kernel/syscall.c +++ b/arch/mips/kernel/syscall.c @@ -406,3 +406,32 @@ asmlinkage void bad_stack(void) { do_exit(SIGSEGV); } + +/* + * 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[]) +{ + register unsigned long __a0 asm("$4") = (unsigned long) filename; + register unsigned long __a1 asm("$5") = (unsigned long) argv; + register unsigned long __a2 asm("$6") = (unsigned long) envp; + register unsigned long __a3 asm("$7"); + unsigned long __v0; + + __asm__ volatile (" \n" + " .set noreorder \n" + " li $2, %5 # __NR_execve \n" + " syscall \n" + " move %0, $2 \n" + " .set reorder \n" + : "=&r" (__v0), "=r" (__a3) + : "r" (__a0), "r" (__a1), "r" (__a2), "i" (__NR_execve) + : "$2", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24", + "memory"); + + if (__a3 == 0) + return __v0; + + return -__v0; +} diff --git a/arch/ppc/kernel/misc.S b/arch/ppc/kernel/misc.S index 50b4bbd..5f66840 100644 --- a/arch/ppc/kernel/misc.S +++ b/arch/ppc/kernel/misc.S @@ -942,20 +942,16 @@ _GLOBAL(kernel_thread) addi r1,r1,16 blr +_GLOBAL(kernel_execve) + li r0,__NR_execve + sc + bnslr + neg r3,r3 + blr + /* * This routine is just here to keep GCC happy - sigh... */ _GLOBAL(__main) blr -#define SYSCALL(name) \ -_GLOBAL(name) \ - li r0,__NR_##name; \ - sc; \ - bnslr; \ - lis r4,errno@ha; \ - stw r3,errno@l(r4); \ - li r3,-1; \ - blr - -SYSCALL(execve) diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c index e351780..584ed95 100644 --- a/arch/s390/kernel/sys_s390.c +++ b/arch/s390/kernel/sys_s390.c @@ -27,6 +27,7 @@ #include <linux/file.h> #include <linux/utsname.h> #include <linux/personality.h> +#include <linux/unistd.h> #include <asm/uaccess.h> #include <asm/ipc.h> @@ -266,3 +267,22 @@ s390_fadvise64_64(struct fadvise64_64_args __user *args) return sys_fadvise64_64(a.fd, a.offset, a.len, a.advice); } +/* + * 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[]) +{ + register const char *__arg1 asm("2") = filename; + register char *const*__arg2 asm("3") = argv; + register char *const*__arg3 asm("4") = envp; + register long __svcres asm("2"); + asm volatile( + "svc %b1" + : "=d" (__svcres) + : "i" (__NR_execve), + "0" (__arg1), + "d" (__arg2), + "d" (__arg3) : "memory"); + return __svcres; +} diff --git a/arch/sh/kernel/sys_sh.c b/arch/sh/kernel/sys_sh.c index 11c2acd..8fde950 100644 --- a/arch/sh/kernel/sys_sh.c +++ b/arch/sh/kernel/sys_sh.c @@ -25,6 +25,7 @@ #include <asm/cacheflush.h> #include <asm/uaccess.h> #include <asm/ipc.h> +#include <asm/unistd.h> /* * sys_pipe() is the normal C calling standard for creating @@ -309,3 +310,19 @@ asmlinkage int sys_fadvise64_64_wrapper(int fd, u32 offset0, u32 offset1, (u64)len0 << 32 | len1, advice); #endif } + +/* + * 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[]) +{ + register long __sc0 __asm__ ("r3") = __NR_execve; + register long __sc4 __asm__ ("r4") = (long) filename; + register long __sc5 __asm__ ("r5") = (long) argv; + register long __sc6 __asm__ ("r6") = (long) envp; + __asm__ __volatile__ ("trapa #0x13" : "=z" (__sc0) + : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6) + : "memory"); + return __sc0; +} diff --git a/arch/sh64/kernel/sys_sh64.c b/arch/sh64/kernel/sys_sh64.c index c6de1a9..ad0fa4e 100644 --- a/arch/sh64/kernel/sys_sh64.c +++ b/arch/sh64/kernel/sys_sh64.c @@ -32,6 +32,7 @@ #include <asm/uaccess.h> #include <asm/ipc.h> #include <asm/ptrace.h> +#include <asm/unistd.h> #define REG_3 3 @@ -283,3 +284,21 @@ asmlinkage int sys_uname(struct old_utsname * name) up_read(&uts_sem); return err?-EFAULT:0; } + +/* + * 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[]) +{ + register unsigned long __sc0 __asm__ ("r9") = ((0x13 << 16) | __NR_execve); + register unsigned long __sc2 __asm__ ("r2") = (unsigned long) filename; + register unsigned long __sc3 __asm__ ("r3") = (unsigned long) argv; + register unsigned long __sc4 __asm__ ("r4") = (unsigned long) envp; + __asm__ __volatile__ ("trapa %1 !\t\t\t execve(%2,%3,%4)" + : "=r" (__sc0) + : "r" (__sc0), "r" (__sc2), "r" (__sc3), "r" (__sc4) ); + __asm__ __volatile__ ("!dummy %0 %1 %2 %3" + : : "r" (__sc0), "r" (__sc2), "r" (__sc3), "r" (__sc4) : "memory"); + return __sc0; +} diff --git a/arch/sparc/kernel/sys_sparc.c b/arch/sparc/kernel/sys_sparc.c index 002ab4d..a954a0c 100644 --- a/arch/sparc/kernel/sys_sparc.c +++ b/arch/sparc/kernel/sys_sparc.c @@ -24,6 +24,7 @@ #include <asm/uaccess.h> #include <asm/ipc.h> +#include <asm/unistd.h> /* #define DEBUG_UNIMP_SYSCALL */ @@ -488,3 +489,25 @@ out: up_read(&uts_sem); return err; } + +/* + * 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[]) +{ + long __res; + register long __g1 __asm__ ("g1") = __NR_execve; + register long __o0 __asm__ ("o0") = (long)(filename); + register long __o1 __asm__ ("o1") = (long)(argv); + register long __o2 __asm__ ("o2") = (long)(envp); + asm volatile ("t 0x10\n\t" + "bcc 1f\n\t" + "mov %%o0, %0\n\t" + "sub %%g0, %%o0, %0\n\t" + "1:\n\t" + : "=r" (__res), "=&r" (__o0) + : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) + : "cc"); + return __res; +} diff --git a/arch/sparc64/kernel/sys_sparc.c b/arch/sparc64/kernel/sys_sparc.c index 89ac435..a53d4ab 100644 --- a/arch/sparc64/kernel/sys_sparc.c +++ b/arch/sparc64/kernel/sys_sparc.c @@ -31,6 +31,7 @@ #include <asm/utrap.h> #include <asm/perfctr.h> #include <asm/a.out.h> +#include <asm/unistd.h> /* #define DEBUG_UNIMP_SYSCALL */ @@ -963,3 +964,23 @@ asmlinkage long sys_perfctr(int opcode, unsigned long arg0, unsigned long arg1, }; return err; } + +/* + * 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[]) +{ + long __res; + register long __g1 __asm__ ("g1") = __NR_execve; + register long __o0 __asm__ ("o0") = (long)(filename); + register long __o1 __asm__ ("o1") = (long)(argv); + register long __o2 __asm__ ("o2") = (long)(envp); + asm volatile ("t 0x6d\n\t" + "sub %%g0, %%o0, %0\n\t" + "movcc %%xcc, %%o0, %0\n\t" + : "=r" (__res), "=&r" (__o0) + : "1" (__o0), "r" (__o1), "r" (__o2), "r" (__g1) + : "cc"); + return __res; +} diff --git a/arch/v850/kernel/syscalls.c b/arch/v850/kernel/syscalls.c index 2ec0700..d2b1fb1 100644 --- a/arch/v850/kernel/syscalls.c +++ b/arch/v850/kernel/syscalls.c @@ -33,6 +33,7 @@ #include <asm/uaccess.h> #include <asm/ipc.h> #include <asm/semaphore.h> +#include <asm/unistd.h> /* * sys_ipc() is the de-multiplexer for the SysV IPC calls.. @@ -194,3 +195,22 @@ unsigned long sys_mmap (unsigned long addr, size_t len, out: return err; } + +/* + * 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[]) +{ + register char *__a __asm__ ("r6") = filename; + register void *__b __asm__ ("r7") = argv; + register void *__c __asm__ ("r8") = envp; + register unsigned long __syscall __asm__ ("r12") = __NR_execve; + register unsigned long __ret __asm__ ("r10"); + __asm__ __volatile__ ("trap 0" + : "=r" (__ret), "=r" (__syscall) + : "1" (__syscall), "r" (__a), "r" (__b), "r" (__c) + : "r1", "r5", "r11", "r13", "r14", + "r15", "r16", "r17", "r18", "r19"); + return __ret; +} diff --git a/arch/xtensa/kernel/syscalls.c b/arch/xtensa/kernel/syscalls.c index 37c90ca..d9285d4 100644 --- a/arch/xtensa/kernel/syscalls.c +++ b/arch/xtensa/kernel/syscalls.c @@ -266,3 +266,23 @@ void system_call (struct pt_regs *regs) regs->areg[2] = res; do_syscall_trace(); } + +/* + * 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[]) +{ + long __res; + asm volatile ( + " mov a5, %2 \n" + " mov a4, %4 \n" + " mov a3, %3 \n" + " movi a2, %1 \n" + " syscall \n" + " mov %0, a2 \n" + : "=a" (__res) + : "i" (__NR_execve), "a" (filename), "a" (argv), "a" (envp) + : "a2", "a3", "a4", "a5"); + return __res; +} |
