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[ARM] start_thread fixup for nommu mode

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This patch supports start_thread in nommu mode which requires the
base index register.

Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Hyok S. Choi 2006-01-13 21:04:17 +00:00 committed by Russell King
parent 946d4935fc
commit e72b04756f
1 changed files with 7 additions and 0 deletions
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7
include/asm-arm/processor.h
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@ -49,6 +49,12 @@ struct thread_struct {
#define INIT_THREAD { } #define INIT_THREAD { }
#ifdef CONFIG_MMU
#define nommu_start_thread(regs) do { } while (0)
#else
#define nommu_start_thread(regs) regs->ARM_r10 = current->mm->start_data
#endif
#define start_thread(regs,pc,sp) \ #define start_thread(regs,pc,sp) \
({ \ ({ \
unsigned long *stack = (unsigned long *)sp; \ unsigned long *stack = (unsigned long *)sp; \
@ -65,6 +71,7 @@ struct thread_struct {
regs->ARM_r2 = stack[2]; /* r2 (envp) */ \ regs->ARM_r2 = stack[2]; /* r2 (envp) */ \
regs->ARM_r1 = stack[1]; /* r1 (argv) */ \ regs->ARM_r1 = stack[1]; /* r1 (argv) */ \
regs->ARM_r0 = stack[0]; /* r0 (argc) */ \ regs->ARM_r0 = stack[0]; /* r0 (argc) */ \
nommu_start_thread(regs); \
}) })
/* Forward declaration, a strange C thing */ /* Forward declaration, a strange C thing */