In some usages of inline assembly, hard-coded registers were specified when a scratch register should have been used instead.
Signed-off-by: Timur Tabi timur@freescale.com ---
I can't test the kgdb changes, but the rest appears to be okay.
arch/powerpc/lib/kgdb.c | 25 +++++++++++++++---------- arch/powerpc/lib/time.c | 5 ++++- 2 files changed, 19 insertions(+), 11 deletions(-)
diff --git a/arch/powerpc/lib/kgdb.c b/arch/powerpc/lib/kgdb.c index 1ec6818..19a56db 100644 --- a/arch/powerpc/lib/kgdb.c +++ b/arch/powerpc/lib/kgdb.c @@ -12,11 +12,13 @@ void breakinst(void); int kgdb_setjmp(long *buf) { - asm ("mflr 0; stw 0,0(%0);" - "stw 1,4(%0); stw 2,8(%0);" - "mfcr 0; stw 0,12(%0);" - "stmw 13,16(%0)" - : : "r" (buf)); + unsigned long temp; + + asm volatile("mflr %0; stw %0,0(%1);" + "stw %%r1,4(%1); stw %%r2,8(%1);" + "mfcr %0; stw %0,12(%1);" + "stmw %%r13,16(%1)" + : "=&r"(temp) : "r" (buf)); /* XXX should save fp regs as well */ return 0; } @@ -24,13 +26,16 @@ kgdb_setjmp(long *buf) void kgdb_longjmp(long *buf, int val) { + unsigned long temp; + if (val == 0) val = 1; - asm ("lmw 13,16(%0);" - "lwz 0,12(%0); mtcrf 0x38,0;" - "lwz 0,0(%0); lwz 1,4(%0); lwz 2,8(%0);" - "mtlr 0; mr 3,%1" - : : "r" (buf), "r" (val)); + + asm volatile("lmw %%r13,16(%1);" + "lwz %0,12(%1); mtcrf 0x38,%0;" + "lwz %0,0(%1); lwz %%r1,4(%1); lwz %%r2,8(%1);" + "mtlr %0; mr %%r3,%2" + : "=&r"(temp) : "r" (buf), "r" (val)); }
static inline unsigned long diff --git a/arch/powerpc/lib/time.c b/arch/powerpc/lib/time.c index 2909961..34633c3 100644 --- a/arch/powerpc/lib/time.c +++ b/arch/powerpc/lib/time.c @@ -78,6 +78,8 @@ unsigned long ticks2usec(unsigned long ticks)
int init_timebase (void) { + unsigned long temp; + #if defined(CONFIG_5xx) || defined(CONFIG_8xx) volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
@@ -86,7 +88,8 @@ int init_timebase (void) #endif
/* reset */ - asm ("li 3,0 ; mttbu 3 ; mttbl 3 ;"); + asm volatile("li %0,0 ; mttbu %0 ; mttbl %0;" + : "=&r"(temp) );
#if defined(CONFIG_5xx) || defined(CONFIG_8xx) /* enable */