| Line 57... |
Line 57... |
#define CALL_EXCEPTION_HANDLER \
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#define CALL_EXCEPTION_HANDLER \
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l.addi r1, r1, -EXCEPTION_STACK_SIZE; \
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l.addi r1, r1, -EXCEPTION_STACK_SIZE; \
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l.sw 4(r1), r3; \
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l.sw 4(r1), r3; \
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l.sw 8(r1), r4; \
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l.sw 8(r1), r4; \
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l.mfspr r3,r0,SPR_NPC; \
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l.mfspr r3,r0,SPR_NPC; \
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l.j _exception_handler; \
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l.j or1k_exception_handler; \
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l.mfspr r4,r0,SPR_EPCR_BASE
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l.mfspr r4,r0,SPR_EPCR_BASE
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|
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/* -------------------------------------------------------------------------- */
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/* -------------------------------------------------------------------------- */
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/*!Exception vectors */
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/*!Exception vectors */
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/* -------------------------------------------------------------------------- */
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/* -------------------------------------------------------------------------- */
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| Line 261... |
Line 261... |
l.lwz r2,0(r2)
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l.lwz r2,0(r2)
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l.add r1,r1,r2
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l.add r1,r1,r2
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l.or r2,r1,r1
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l.or r2,r1,r1
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|
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/* Store stack address in stack variable */
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/* Store stack address in stack variable */
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l.movhi r26,hi(stack)
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l.movhi r3,hi(stack)
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l.ori r26,r26,lo(stack)
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l.ori r3,r3,lo(stack)
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l.sw 0(r26),r1
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l.sw 0(r3),r1
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|
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/* Initialise cache */
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/* Initialise cache */
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/* TODO - potentially make this optional for simulation targets to save
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/* TODO - potentially make this optional for simulation targets to save
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time during startup */
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time during startup */
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l.jal _cache_init
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l.jal or1k_cache_init
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l.nop
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l.nop
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|
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/* Clear BSS */
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/* Clear BSS */
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.L10: l.movhi r28,hi(__bss_start)
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.L10: l.movhi r3,hi(__bss_start)
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l.ori r28,r28,lo(__bss_start)
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l.ori r3,r3,lo(__bss_start)
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l.movhi r30,hi(end)
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l.movhi r4,hi(end)
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l.ori r30,r30,lo(end)
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l.ori r4,r4,lo(end)
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|
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.L1: l.sw (0)(r28),r0
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.L1: l.sw (0)(r3),r0
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l.sfltu r28,r30
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l.sfltu r3,r4
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l.bf .L1
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l.bf .L1
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l.addi r28,r28,4 /* Delay slot */
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l.addi r3,r3,4 /* Delay slot */
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|
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/* Call global and static constructors */
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/* Call global and static constructors */
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l.jal __init
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l.jal __init
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l.nop
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l.nop
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|
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/* Set up destructors to be called from exit if main never returns */
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/* Set up destructors to be called from exit if main ever returns */
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l.movhi r3,hi(__fini)
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l.movhi r3,hi(__fini)
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l.jal atexit
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l.jal atexit
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l.ori r3,r3,lo(__fini) /* Delay slot */
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l.ori r3,r3,lo(__fini) /* Delay slot */
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|
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/* Check if UART is to be initialised */
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/* Check if UART is to be initialised */
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