| Line 16... |
Line 16... |
l.movhi gpr, hi(symbol) ; \
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l.movhi gpr, hi(symbol) ; \
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l.ori gpr, gpr, lo(symbol)
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l.ori gpr, gpr, lo(symbol)
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|
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// Really goes to configurable interrupt handler
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// Really goes to configurable interrupt handler
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#define UNHANDLED_EXCEPTION \
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#define UNHANDLED_EXCEPTION \
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l.addi r1, r1, -128; \
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l.addi r1, r1, -256; \
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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.mfspr r4,r0,SPR_EPCR_BASE; \
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l.mfspr r4,r0,SPR_EPCR_BASE; \
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l.j default_exception_handler; \
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l.j default_exception_handler; \
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| Line 69... |
Line 69... |
.org 0x500
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.org 0x500
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#define TIMER_RELOAD_VALUE (SPR_TTMR_IE | SPR_TTMR_RT | ((IN_CLK/TICKS_PER_SEC) & SPR_TTMR_PERIOD))
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#define TIMER_RELOAD_VALUE (SPR_TTMR_IE | SPR_TTMR_RT | ((IN_CLK/TICKS_PER_SEC) & SPR_TTMR_PERIOD))
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//UNHANDLED_EXCEPTION
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//UNHANDLED_EXCEPTION
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/* Simply load timer_ticks variable and increment */
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/* Simply load timer_ticks variable and increment */
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.extern timer_ticks
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.extern timer_ticks
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l.addi r1, r1, -8
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l.addi r1, r1, -136
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l.sw 0(r1), r25
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l.sw 0(r1), r25
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l.sw 4(r1), r26
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l.sw 4(r1), r26
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l.movhi r25, hi(timer_ticks)
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l.movhi r25, hi(timer_ticks)
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l.ori r25, r25, lo(timer_ticks)
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l.ori r25, r25, lo(timer_ticks)
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l.lwz r26, 0(r25) /* Load variable addr.*/
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l.lwz r26, 0(r25) /* Load variable addr.*/
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| Line 82... |
Line 82... |
l.movhi r25, hi(TIMER_RELOAD_VALUE) /* Load timer value */
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l.movhi r25, hi(TIMER_RELOAD_VALUE) /* Load timer value */
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l.ori r25, r25, lo(TIMER_RELOAD_VALUE)
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l.ori r25, r25, lo(TIMER_RELOAD_VALUE)
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l.mtspr r0, r25, SPR_TTMR /* Reset timer */
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l.mtspr r0, r25, SPR_TTMR /* Reset timer */
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l.lwz r25, 0(r1)
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l.lwz r25, 0(r1)
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l.lwz r26, 4(r1)
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l.lwz r26, 4(r1)
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l.addi r1, r1, 8
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l.addi r1, r1, 136
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l.rfe
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l.rfe
|
|
|
/* ---[ 0x600: Aligment exception ]-------------------------------------- */
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/* ---[ 0x600: Aligment exception ]-------------------------------------- */
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.org 0x600
|
.org 0x600
|
UNHANDLED_EXCEPTION
|
UNHANDLED_EXCEPTION
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| Line 389... |
Line 389... |
l.lwz r29, 0x6c(r1)
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l.lwz r29, 0x6c(r1)
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l.lwz r30, 0x70(r1)
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l.lwz r30, 0x70(r1)
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l.lwz r31, 0x74(r1)
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l.lwz r31, 0x74(r1)
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l.lwz r32, 0x78(r1)
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l.lwz r32, 0x78(r1)
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|
|
l.addi r1, r1, 128
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l.addi r1, r1, 256
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|
|
l.rfe
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l.rfe
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l.nop
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l.nop
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|
|
