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Software for White Rabbit PTP Core
Commit e3f4734f authored by Wesley W. Terpstra's avatar Wesley W. Terpstra
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Provide all exception handlers. 

Otherwise unexpected roll-over onto the next handler will happen.
parent aed819ee
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Showing with 47 additions and 4 deletions
target/lm32/crt0.S
View file @ e3f4734f
......@@ -90,9 +90,10 @@
.global _start
_start:
.weak _debug_unit
_debug_unit:
.global _reset_handler
.type _reset_handler, @function
.align 256
_debug_unit:
_reset_handler:
xor r0, r0, r0
wcsr IE, r0
......@@ -103,11 +104,46 @@ _reset_handler:
calli _crt0
nop
.size _reset_handler, .-_reset_handler
.extern _breakpoint_handler
.global _breakpoint_handler
.type _breakpoint_handler, @function
.align 32
_breakpoint_handler:
bret
.extern _instruction_bus_error_handler
.global _instruction_bus_error_handler
.type _instruction_bus_error_handler, @function
.align 32
_instruction_bus_error_handler:
eret
.extern _watchpoint_handler
.global _watchpoint_handler
.type _watchpoint_handler, @function
.align 32
_watchpoint_handler:
bret
.extern _data_bus_error_handler
.global _data_bus_error_handler
.type _data_bus_error_handler, @function
.align 32
_data_bus_error_handler:
eret
.extern _divide_by_zero_handler
.global _divide_by_zero_handler
.type _divide_by_zero_handler, @function
.align 32
_divide_by_zero_handler:
eret
.extern _irq_entry
.org 0xc0
.global _interrupt_handler
.type _interrupt_handler, @function
.align 32
_interrupt_handler:
sw (sp+0), ra
calli _save_all
......@@ -121,7 +157,14 @@ _interrupt_handler:
nop
nop
nop
.extern _system_call_handler
.global _system_call_handler
.type _system_call_handler, @function
.align 32
_system_call_handler:
eret
.org 0x100
.global _crt0
.type _crt0, @function
......
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