mbed library sources
Dependents: Freedman_v2 Nucleo_i2c_OLED_BME280_copy
Fork of mbed-src by
Diff: targets/cmsis/TARGET_NXP/TARGET_LPC2460/TOOLCHAIN_GCC_ARM/vector_functions.s
- Revision:
- 577:15494b56c2f3
- Parent:
- 576:99a3d3d9c43f
- Child:
- 578:dd2bc6eabbef
--- a/targets/cmsis/TARGET_NXP/TARGET_LPC2460/TOOLCHAIN_GCC_ARM/vector_functions.s Tue Jun 30 09:45:08 2015 +0100 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,195 +0,0 @@ -/* .include "vector_defns.h" */ - - - -.section .privileged_code, "ax" -.arm - - -.weak __mbed_fiq -.weak __mbed_undef -.weak __mbed_prefetch_abort -.weak __mbed_data_abort -.weak __mbed_irq -.weak __mbed_swi -.weak __mbed_dcc_irq -.weak __mbed_reset -.global __mbed_init_realmonitor -.weak SVC_Handler -.weak IRQ_Handler -/* .global __mbed_init */ - - - - -__mbed_fiq: - B __mbed_fiq -__mbed_undef: - LDR PC, =0x7fffffa0 -__mbed_prefetch_abort: - LDR PC, =0x7fffffb0 -__mbed_data_abort: - LDR PC, =0x7fffffc0 -__mbed_irq: -/* - If RTOS is enabled then goto RTOS IRQ handler -*/ - PUSH {R0} - LDR R0, =IRQ_Handler - CMP R0, #0 - POP {R0} - BNE IRQ_Handler -/* - else use CMSIS IRQ handler -*/ - MSR CPSR_c, #0x1F|0x80|0x40 - - STMDB sp!, {r0-r3,r12,lr} - - MOV r0, #0xFFFFFF00 - LDR r0, [r0] - - MOV lr, pc - BX r0 - - MOV r0, #0xFFFFFF00 - STR r0, [r0] - - LDMFD sp!,{r0-r3,r12,lr} - - MSR CPSR_c, #0x12|0x80|0x40 - - SUBS pc, lr, #4 - -__mbed_swi: -/* - If RTOS is enabled then goto RTOS SVC handler -*/ - PUSH {R0} - LDR R0, =SVC_Handler - CMP R0, #0 - POP {R0} - BNE SVC_Handler -/* - else use CMSIS SVC handler -*/ - STMFD sp!, {a4, r4, ip, lr} - - LDR r4, =0x40000040 - - LDR a4, =0x00940000 - LDR PC, =0x7ffff820 - -__mbed_dcc_irq: - LDMFD sp!,{r0-r3,r12,lr} - - MSR CPSR_c, #0x12|0x80|0x40 - - SUB lr, lr, #4 - STMFD sp!, {ip,lr} - - LDR LR, =0xfffff000 - STR LR, [LR, #0xf00] - - LDR PC, =0x7fffffe0 -/* - __mbed_reset is called after reset - we setup the stacks and realmonitor, then call Reset_Handler like on M3 -*/ - -.section .text, "ax" -.arm -.global Reset_handler -Reset_Handler: - .extern __libc_init_array - .extern SystemInit - .weak software_init_hook - LDR R0, =SystemInit - MOV LR, PC - BX R0 - -/* if (software_init_hook) // give control to the RTOS - software_init_hook(); // this will also call __libc_init_array -*/ - LDR R0, =software_init_hook - CMP R0, #0 - BEQ nortos - ORR R0,R0,#1 /* set thumb address */ - BX R0 -/* else */ -nortos: - LDR R0, =__libc_init_array - MOV LR, PC - BX R0 - - MSR CPSR_c, #0x1F /* enable irq */ - - LDR R0, =main - BX R0 - -__mbed_reset: - LDR R0, =( __SRAM_segment_end__ ) - - MSR CPSR_c, #0x1B|0x80|0x40 - MOV SP, R0 - SUB R0, R0, #0x00000040 - - MSR CPSR_c, #0x17|0x80|0x40 - MOV SP, R0 - SUB R0, R0, #0x00000040 - - MSR CPSR_c, #0x11|0x80|0x40 - MOV SP, R0 - SUB R0, R0, #0x00000040 - - MSR CPSR_c, #0x12|0x80|0x40 - MOV SP, R0 - SUB R0, R0, #0x00000040 - - MSR CPSR_c, #0x13|0x80|0x40 - MOV SP, R0 - SUB R0, R0, #0x00000040 - -/* - MSR CPSR_c, #0x10|0x80|0x40 - MOV SP, R0 -*/ - MSR CPSR_c, #0x1F|0x80|0x40 - MOV SP, R0 - - MSR CPSR_c, #0x13|0x80|0x40 /* execute in Supervisor mode */ - -/* Relocate .data section (Copy from ROM to RAM) */ - LDR R1, =__text_end__ /* _etext */ - LDR R2, =__data_start__ /* _data */ - LDR R3, =__data_end__ /* _edata */ - CMP R2, R3 - BEQ DataIsEmpty -LoopRel: CMP R2, R3 - LDRLO R0, [R1], #4 - STRLO R0, [R2], #4 - BLO LoopRel -DataIsEmpty: - -/* Clear .bss section (Zero init) */ - MOV R0, #0 - LDR R1, =__bss_start__ - LDR R2, =__bss_end__ - CMP R1,R2 - BEQ BSSIsEmpty -LoopZI: CMP R1, R2 - STRLO R0, [R1], #4 - BLO LoopZI -BSSIsEmpty: - - -/* Init realmonitor */ -/* - LDR R0, =__mbed_init_realmonitor - MOV LR, PC - BX R0 -*/ - -/* Go to Reset_Handler */ - LDR R0, =Reset_Handler - BX R0