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[PATCH] ARM: 2769/1: cpu_init() stack setup fix 

Patch from Catalin Marinas

The compiler allocates r14 for the stk variable in the __asm__ directive.
This is a shadowed register and gets changed when the mode is changed,
causing random values in the SP register. The patch adds a clobber for
the r14 register.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Catalin Marinas 2005-06-29 15:34:39 +01:00 committed by Russell King
parent 9ec3c75cde
commit aaaa3f9e51
1 changed files with 2 additions and 1 deletions
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3
arch/arm/kernel/setup.c
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@ -359,7 +359,8 @@ void cpu_init(void)
"I" (offsetof(struct stack, abt[0])),
"I" (PSR_F_BIT | PSR_I_BIT | UND_MODE),
"I" (offsetof(struct stack, und[0])),
"I" (PSR_F_BIT | PSR_I_BIT | SVC_MODE));
"I" (PSR_F_BIT | PSR_I_BIT | SVC_MODE)
: "r14");
}
static struct machine_desc * __init setup_machine(unsigned int nr)