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Viewing changes to boot/arch/arm32/src/asm.S

  • Committer: Jakub Jermar
  • Date: 2011-04-13 14:45:41 UTC
  • mfrom: (527.1.397 main-clone)
  • Revision ID: jakub@jermar.eu-20110413144541-x0j3r1zxqhsljx1o
Merge mainline changes.

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Lines of Context:
boot/arch/arm32/src/asm.S
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.global boot_pt
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.global boot_stack
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.global halt
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.global memcpy
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.global jump_to_kernel
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start:
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halt:
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        b halt
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memcpy:
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        add r3, r1, #3
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        bic r3, r3, #3
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        cmp r1, r3
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        stmdb sp!, {r4, r5, lr}
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        mov r5, r0
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        beq 4f
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        1:
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                cmp r2, #0
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                movne ip, #0
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                beq 3f
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        2:
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                ldrb r3, [ip, r1]
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                strb r3, [ip, r0]
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                add ip, ip, #1
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                cmp ip, r2
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                bne 2b
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        3:
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                mov r0, r5
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                ldmia sp!, {r4, r5, pc}
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        4:
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                add r3, r0, #3
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                bic r3, r3, #3
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                cmp r0, r3
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                bne 1b
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                movs r4, r2, lsr #2
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                moveq lr, r4
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                beq 6f
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                mov lr, #0
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                mov ip, lr
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        5:
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                ldr r3, [ip, r1]
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                add lr, lr, #1
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                cmp lr, r4
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                str r3, [ip, r0]
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                add ip, ip, #4
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                bne 5b
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        6:
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                ands r4, r2, #3
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                beq 3b
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                mov r3, lr, lsl #2
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                add r0, r3, r0
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                add ip, r3, r1
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                mov r2, #0
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        7:
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                ldrb r3, [r2, ip]
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                strb r3, [r2, r0]
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                add r2, r2, #1
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                cmp r2, r4
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                bne 7b
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                b 3b
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jump_to_kernel:
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        #
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        # TODO