diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-02-21 05:18:40 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-04-17 17:40:49 +0200 |
| commit | 513ad84bf60d96a6998bca10ed07c3d340449be8 (patch) | |
| tree | 2a1600178aea7e130c5881ac861cb5aa69450937 /arch/x86 | |
| parent | 1180e01de50c0c7683c6648251f32957bc2d7850 (diff) | |
x86: de-macro start_thread()
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/process_32.c | 15 | ||||
| -rw-r--r-- | arch/x86/kernel/process_64.c | 15 |
2 files changed, 30 insertions, 0 deletions
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c index 2cd89b8a7050..9230ce060d09 100644 --- a/arch/x86/kernel/process_32.c +++ b/arch/x86/kernel/process_32.c @@ -512,6 +512,21 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp, return err; } +void +start_thread(struct pt_regs *regs, unsigned long new_ip, unsigned long new_sp) +{ + __asm__("movl %0, %%gs" :: "r"(0)); + regs->fs = 0; + set_fs(USER_DS); + regs->ds = __USER_DS; + regs->es = __USER_DS; + regs->ss = __USER_DS; + regs->cs = __USER_CS; + regs->ip = new_ip; + regs->sp = new_sp; +} +EXPORT_SYMBOL_GPL(start_thread); + #ifdef CONFIG_SECCOMP static void hard_disable_TSC(void) { diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 46c4c546b499..1ffce14cff6e 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -528,6 +528,21 @@ out: return err; } +void +start_thread(struct pt_regs *regs, unsigned long new_ip, unsigned long new_sp) +{ + asm volatile("movl %0, %%fs; movl %0, %%es; movl %0, %%ds" :: "r"(0)); + load_gs_index(0); + regs->ip = new_ip; + regs->sp = new_sp; + write_pda(oldrsp, new_sp); + regs->cs = __USER_CS; + regs->ss = __USER_DS; + regs->flags = 0x200; + set_fs(USER_DS); +} +EXPORT_SYMBOL_GPL(start_thread); + /* * This special macro can be used to load a debugging register */ |