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Leif's BSS fix

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Leif Lindholm authored and Vladimir 'phcoder' Serbinenko committed 2013-05-16 16:30:41 +02:00
1 parent 72a21cf09b
commit c59fe1d776
1 file changed
+6 -1
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grub-core/kern/arm/uboot/startup.S
+6 -1
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@@ -99,8 +99,13 @@ FUNCTION(codestart)
@ Since we _are_ the C run-time, we need to manually zero the BSS @ Since we _are_ the C run-time, we need to manually zero the BSS
@ region before continuing @ region before continuing
ldr r0, =EXT_C(__bss_start) @ zero from here ldr r0, =EXT_C(__bss_start) @ zero from here
ldr r1, =EXT_C(_end) @ to here @ If unaligned, bytewise zero until base address aligned.
mov r2, #0 mov r2, #0
1: tst r0, #3
beq 2f
strb r2, [r0], #1
b 1b
2: ldr r1, =EXT_C(_end) @ to here
1: str r2, [r0], #4 1: str r2, [r0], #4
cmp r0, r1 cmp r0, r1
bne 1b bne 1b