diff options
Diffstat (limited to 'arch/parisc/kernel/entry.S')
| -rw-r--r-- | arch/parisc/kernel/entry.S | 53 |
1 files changed, 1 insertions, 52 deletions
diff --git a/arch/parisc/kernel/entry.S b/arch/parisc/kernel/entry.S index 18670a07884..18d05e7373b 100644 --- a/arch/parisc/kernel/entry.S +++ b/arch/parisc/kernel/entry.S @@ -708,59 +708,9 @@ ENTRY(end_fault_vector) .import do_cpu_irq_mask,code /* - * r26 = function to be called - * r25 = argument to pass in - * r24 = flags for do_fork() - * - * Kernel threads don't ever return, so they don't need - * a true register context. We just save away the arguments - * for copy_thread/ret_ to properly set up the child. - */ - -#define CLONE_VM 0x100 /* Must agree with <linux/sched.h> */ -#define CLONE_UNTRACED 0x00800000 - - .import do_fork -ENTRY(__kernel_thread) - STREG %r2, -RP_OFFSET(%r30) - - copy %r30, %r1 - ldo PT_SZ_ALGN(%r30),%r30 -#ifdef CONFIG_64BIT - /* Yo, function pointers in wide mode are little structs... -PB */ - ldd 24(%r26), %r2 - STREG %r2, PT_GR27(%r1) /* Store childs %dp */ - ldd 16(%r26), %r26 - - STREG %r22, PT_GR22(%r1) /* save r22 (arg5) */ - copy %r0, %r22 /* user_tid */ -#endif - STREG %r26, PT_GR26(%r1) /* Store function & argument for child */ - STREG %r25, PT_GR25(%r1) - ldil L%CLONE_UNTRACED, %r26 - ldo CLONE_VM(%r26), %r26 /* Force CLONE_VM since only init_mm */ - or %r26, %r24, %r26 /* will have kernel mappings. */ - ldi 1, %r25 /* stack_start, signals kernel thread */ - stw %r0, -52(%r30) /* user_tid */ -#ifdef CONFIG_64BIT - ldo -16(%r30),%r29 /* Reference param save area */ -#endif - BL do_fork, %r2 - copy %r1, %r24 /* pt_regs */ - - /* Parent Returns here */ - - LDREG -PT_SZ_ALGN-RP_OFFSET(%r30), %r2 - ldo -PT_SZ_ALGN(%r30), %r30 - bv %r0(%r2) - nop -ENDPROC(__kernel_thread) - - /* * Child Returns here * - * copy_thread moved args from temp save area set up above - * into task save area. + * copy_thread moved args into task save area. */ ENTRY(ret_from_kernel_thread) @@ -773,7 +723,6 @@ ENTRY(ret_from_kernel_thread) LDREG TASK_PT_GR25(%r1), %r26 #ifdef CONFIG_64BIT LDREG TASK_PT_GR27(%r1), %r27 - LDREG TASK_PT_GR22(%r1), %r22 #endif LDREG TASK_PT_GR26(%r1), %r1 ble 0(%sr7, %r1) |