diff options
Diffstat (limited to 'arch/sh/lib')
| -rw-r--r-- | arch/sh/lib/Makefile | 2 | ||||
| -rw-r--r-- | arch/sh/lib/delay.c | 10 | ||||
| -rw-r--r-- | arch/sh/lib/mcount.S | 10 |
3 files changed, 16 insertions, 6 deletions
diff --git a/arch/sh/lib/Makefile b/arch/sh/lib/Makefile index 7b95f29e317..3baff31e58c 100644 --- a/arch/sh/lib/Makefile +++ b/arch/sh/lib/Makefile @@ -6,7 +6,7 @@ lib-y = delay.o memmove.o memchr.o \ checksum.o strlen.o div64.o div64-generic.o # Extracted from libgcc -lib-y += movmem.o ashldi3.o ashrdi3.o lshrdi3.o \ +obj-y += movmem.o ashldi3.o ashrdi3.o lshrdi3.o \ ashlsi3.o ashrsi3.o ashiftrt.o lshrsi3.o \ udiv_qrnnd.o diff --git a/arch/sh/lib/delay.c b/arch/sh/lib/delay.c index faa8f86c0db..0901b2f14e1 100644 --- a/arch/sh/lib/delay.c +++ b/arch/sh/lib/delay.c @@ -10,6 +10,16 @@ void __delay(unsigned long loops) { __asm__ __volatile__( + /* + * ST40-300 appears to have an issue with this code, + * normally taking two cycles each loop, as with all + * other SH variants. If however the branch and the + * delay slot straddle an 8 byte boundary, this increases + * to 3 cycles. + * This align directive ensures this doesn't occur. + */ + ".balign 8\n\t" + "tst %0, %0\n\t" "1:\t" "bf/s 1b\n\t" diff --git a/arch/sh/lib/mcount.S b/arch/sh/lib/mcount.S index 84a57761f17..52aa2011d75 100644 --- a/arch/sh/lib/mcount.S +++ b/arch/sh/lib/mcount.S @@ -39,7 +39,7 @@ * * Make sure the stack pointer contains a valid address. Valid * addresses for kernel stacks are anywhere after the bss - * (after _ebss) and anywhere in init_thread_union (init_stack). + * (after __bss_stop) and anywhere in init_thread_union (init_stack). */ #define STACK_CHECK() \ mov #(THREAD_SIZE >> 10), r0; \ @@ -60,7 +60,7 @@ cmp/hi r2, r1; \ bf stack_panic; \ \ - /* If sp > _ebss then we're OK. */ \ + /* If sp > __bss_stop then we're OK. */ \ mov.l .L_ebss, r1; \ cmp/hi r1, r15; \ bt 1f; \ @@ -70,7 +70,7 @@ cmp/hs r1, r15; \ bf stack_panic; \ \ - /* If sp > init_stack && sp < _ebss, not OK. */ \ + /* If sp > init_stack && sp < __bss_stop, not OK. */ \ add r0, r1; \ cmp/hs r1, r15; \ bt stack_panic; \ @@ -292,10 +292,10 @@ stack_panic: nop .align 2 -.L_ebss: - .long _ebss .L_init_thread_union: .long init_thread_union +.L_ebss: + .long __bss_stop .Lpanic: .long panic .Lpanic_s: |