mirror of https://github.com/ARMmbed/mbed-os.git
Reformat except.S
Tidy up formatting, and make all 3 toolchain versions more consistent, for ease of diffing and transferring changes between them.pull/12824/head
parent
5e765487c4
commit
c1641e79c5
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@ -22,141 +22,141 @@
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; * -----------------------------------------------------------------------------
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; */
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#ifndef MBED_FAULT_HANDLER_DISABLED
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#ifndef DOMAIN_NS
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#define DOMAIN_NS 1
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#endif
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FAULT_TYPE_HARD_FAULT EQU 0x10
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FAULT_TYPE_MEMMANAGE_FAULT EQU 0x20
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FAULT_TYPE_BUS_FAULT EQU 0x30
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FAULT_TYPE_USAGE_FAULT EQU 0x40
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PRESERVE8
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THUMB
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FAULT_TYPE_HARD_FAULT EQU 0x10
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FAULT_TYPE_MEMMANAGE_FAULT EQU 0x20
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FAULT_TYPE_BUS_FAULT EQU 0x30
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FAULT_TYPE_USAGE_FAULT EQU 0x40
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AREA |.text|, CODE, READONLY
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PRESERVE8
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THUMB
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AREA |.text|, CODE, READONLY
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HardFault_Handler\
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PROC
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EXPORT HardFault_Handler
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LDR R3,=FAULT_TYPE_HARD_FAULT
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B Fault_Handler
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ENDP
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PROC
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EXPORT HardFault_Handler
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LDR R3,=FAULT_TYPE_HARD_FAULT
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B Fault_Handler
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ENDP
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MemManage_Handler\
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PROC
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EXPORT MemManage_Handler
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LDR R3,=FAULT_TYPE_MEMMANAGE_FAULT
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B Fault_Handler
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ENDP
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PROC
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EXPORT MemManage_Handler
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LDR R3,=FAULT_TYPE_MEMMANAGE_FAULT
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B Fault_Handler
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ENDP
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BusFault_Handler\
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PROC
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EXPORT BusFault_Handler
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LDR R3,=FAULT_TYPE_BUS_FAULT
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B Fault_Handler
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ENDP
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PROC
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EXPORT BusFault_Handler
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LDR R3,=FAULT_TYPE_BUS_FAULT
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B Fault_Handler
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ENDP
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UsageFault_Handler\
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PROC
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EXPORT UsageFault_Handler
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LDR R3,=FAULT_TYPE_USAGE_FAULT
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B Fault_Handler
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ENDP
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Fault_Handler PROC
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EXPORT Fault_Handler
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PROC
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EXPORT UsageFault_Handler
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LDR R3,=FAULT_TYPE_USAGE_FAULT
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B Fault_Handler
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ENDP
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Fault_Handler\
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PROC
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EXPORT Fault_Handler
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#if (DOMAIN_NS == 1)
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IMPORT mbed_fault_handler
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IMPORT mbed_fault_context
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MRS R0,MSP
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LDR R1,=0x4
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MOV R2,LR
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TST R2,R1 ; Check EXC_RETURN for bit 2
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BEQ Fault_Handler_Continue
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MRS R0,PSP
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IMPORT mbed_fault_context
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IMPORT mbed_fault_handler
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MRS R0,MSP
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LDR R1,=0x4
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MOV R2,LR
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TST R2,R1 ; Check EXC_RETURN for bit 2
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BEQ Fault_Handler_Continue
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MRS R0,PSP
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Fault_Handler_Continue
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MOV R12,R3
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LDR R3,=mbed_fault_context
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LDR R1,[R3]
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LDR R2,[R0] ; Capture R0
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#4] ; Capture R1
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#8] ; Capture R2
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#12] ; Capture R3
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STR R2,[R1]
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ADDS R1,#4
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STMIA R1!,{R4-R7} ; Capture R4..R7
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MOV R7,R8 ; Capture R8
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STR R7,[R1]
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ADDS R1,#4
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MOV R7,R9 ; Capture R9
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STR R7,[R1]
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ADDS R1,#4
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MOV R7,R10 ; Capture R10
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STR R7,[R1]
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ADDS R1,#4
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MOV R7,R11 ; Capture R11
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STR R7,[R1]
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ADDS R1,#4
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LDR R2,[R0,#16] ; Capture R12
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STR R2,[R1]
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ADDS R1,#8 ; Add 8 here to capture LR next, we will capture SP later
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LDR R2,[R0,#20] ; Capture LR
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#24] ; Capture PC
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#28] ; Capture xPSR
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STR R2,[R1]
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ADDS R1,#4
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; Adjust stack pointer to its original value and capture it
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MOV R3,R0
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ADDS R3,#0x20 ; Add 0x20 to get the SP value prior to exception
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LDR R6,=0x200
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TST R2,R6 ; Check for if STK was aligned by checking bit-9 in xPSR value
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BEQ Fault_Handler_Continue1
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ADDS R3,#0x4
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MOV R12,R3
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LDR R3,=mbed_fault_context
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LDR R1,[R3]
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LDR R2,[R0] ; Capture R0
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#4] ; Capture R1
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#8] ; Capture R2
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#12] ; Capture R3
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STR R2,[R1]
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ADDS R1,#4
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STMIA R1!,{R4-R7} ; Capture R4..R7
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MOV R7,R8 ; Capture R8
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STR R7,[R1]
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ADDS R1,#4
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MOV R7,R9 ; Capture R9
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STR R7,[R1]
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ADDS R1,#4
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MOV R7,R10 ; Capture R10
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STR R7,[R1]
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ADDS R1,#4
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MOV R7,R11 ; Capture R11
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STR R7,[R1]
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ADDS R1,#4
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LDR R2,[R0,#16] ; Capture R12
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STR R2,[R1]
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ADDS R1,#8 ; Add 8 here to capture LR next, we will capture SP later
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LDR R2,[R0,#20] ; Capture LR
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#24] ; Capture PC
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#28] ; Capture xPSR
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STR R2,[R1]
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ADDS R1,#4
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; Adjust stack pointer to its original value and capture it
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MOV R3,R0
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ADDS R3,#0x20 ; Add 0x20 to get the SP value prior to exception
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LDR R6,=0x200
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TST R2,R6 ; Check for if STK was aligned by checking bit-9 in xPSR value
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BEQ Fault_Handler_Continue1
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ADDS R3,#0x4
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Fault_Handler_Continue1
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MOV R5,LR
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LDR R6,=0x10 ; Check for bit-4 to see if FP context was saved
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TST R5,R6
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BNE Fault_Handler_Continue2
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ADDS R3,#0x48 ; 16 FP regs + FPCSR + 1 Reserved
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Fault_Handler_Continue2
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MOV R4,R1
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SUBS R4,#0x10 ; Set the location of SP in ctx
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STR R3,[R4] ; Capture the adjusted SP
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MRS R2,PSP ; Get PSP
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STR R2,[R1]
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ADDS R1,#4
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MRS R2,MSP ; Get MSP
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STR R2,[R1]
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ADDS R1,#4
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MOV R2,LR ; Get current LR(EXC_RETURN)
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STR R2,[R1]
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ADDS R1,#4
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MRS R2,CONTROL ; Get CONTROL Reg
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STR R2,[R1]
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MOV R0,R12
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LDR R3,=mbed_fault_context
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LDR R1,[R3]
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BL mbed_fault_handler
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#endif
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B . ; Just in case we come back here
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ENDP
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MOV R5,LR
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LDR R6,=0x10 ; Check for bit-4 to see if FP context was saved
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TST R5,R6
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BNE Fault_Handler_Continue2
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ADDS R3,#0x48 ; 16 FP regs + FPCSR + 1 Reserved
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Fault_Handler_Continue2
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MOV R4,R1
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SUBS R4,#0x10 ; Set the location of SP in ctx
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STR R3,[R4] ; Capture the adjusted SP
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MRS R2,PSP ; Get PSP
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STR R2,[R1]
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ADDS R1,#4
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MRS R2,MSP ; Get MSP
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STR R2,[R1]
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ADDS R1,#4
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MOV R2,LR ; Get current LR(EXC_RETURN)
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STR R2,[R1]
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ADDS R1,#4
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MRS R2,CONTROL ; Get CONTROL Reg
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STR R2,[R1]
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MOV R0,R12
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LDR R3,=mbed_fault_context
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LDR R1,[R3]
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BL mbed_fault_handler
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#endif
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END
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B . ; Just in case we come back here
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ENDP
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#endif
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END
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@ -23,17 +23,17 @@
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*/
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#ifndef MBED_FAULT_HANDLER_DISABLED
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.file "except.S"
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.syntax unified
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.file "except.S"
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.syntax unified
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#ifndef DOMAIN_NS
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#define DOMAIN_NS 1
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#endif
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.equ FAULT_TYPE_HARD_FAULT, 0x10
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.equ FAULT_TYPE_MEMMANAGE_FAULT, 0x20
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.equ FAULT_TYPE_BUS_FAULT, 0x30
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.equ FAULT_TYPE_USAGE_FAULT, 0x40
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.equ FAULT_TYPE_HARD_FAULT, 0x10
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.equ FAULT_TYPE_MEMMANAGE_FAULT, 0x20
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.equ FAULT_TYPE_BUS_FAULT, 0x30
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.equ FAULT_TYPE_USAGE_FAULT, 0x40
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.thumb
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.section ".text"
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@ -41,159 +41,157 @@
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//HardFault_Handler
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.thumb_func
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.type HardFault_Handler, %function
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.global HardFault_Handler
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.type HardFault_Handler, %function
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.global HardFault_Handler
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.fnstart
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.cantunwind
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HardFault_Handler:
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LDR R3,=FAULT_TYPE_HARD_FAULT
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B Fault_Handler
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LDR R3,=FAULT_TYPE_HARD_FAULT
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B Fault_Handler
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.fnend
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.size HardFault_Handler, .-HardFault_Handler
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//MemManage_Handler
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.size HardFault_Handler, .-HardFault_Handler
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//MemManage_Handler
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.thumb_func
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.type MemManage_Handler, %function
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.global MemManage_Handler
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.type MemManage_Handler, %function
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.global MemManage_Handler
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.fnstart
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.cantunwind
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MemManage_Handler:
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LDR R3,=FAULT_TYPE_MEMMANAGE_FAULT
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B Fault_Handler
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LDR R3,=FAULT_TYPE_MEMMANAGE_FAULT
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B Fault_Handler
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.fnend
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.size MemManage_Handler, .-MemManage_Handler
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.size MemManage_Handler, .-MemManage_Handler
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//BusFault_Handler
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//BusFault_Handler
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.thumb_func
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.type BusFault_Handler, %function
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.global BusFault_Handler
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.type BusFault_Handler, %function
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.global BusFault_Handler
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.fnstart
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.cantunwind
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BusFault_Handler:
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LDR R3,=FAULT_TYPE_BUS_FAULT
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B Fault_Handler
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LDR R3,=FAULT_TYPE_BUS_FAULT
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B Fault_Handler
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.fnend
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.size BusFault_Handler, .-BusFault_Handler
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//UsageFault_Handler
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.size BusFault_Handler, .-BusFault_Handler
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//UsageFault_Handler
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.thumb_func
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.type UsageFault_Handler, %function
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.global UsageFault_Handler
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.type UsageFault_Handler, %function
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.global UsageFault_Handler
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.fnstart
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.cantunwind
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UsageFault_Handler:
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LDR R3,=FAULT_TYPE_USAGE_FAULT
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B Fault_Handler
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LDR R3,=FAULT_TYPE_USAGE_FAULT
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B Fault_Handler
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.fnend
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.size UsageFault_Handler, .-UsageFault_Handler
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.size UsageFault_Handler, .-UsageFault_Handler
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//Common Fault_Handler to capture the context
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.thumb_func
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.type Fault_Handler, %function
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.global Fault_Handler
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.type Fault_Handler, %function
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.global Fault_Handler
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.fnstart
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.cantunwind
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Fault_Handler:
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#if (DOMAIN_NS == 1)
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MRS R0,MSP
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LDR R1,=0x4
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MOV R2,LR
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TST R2,R1 // Check EXC_RETURN for bit 2
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BEQ Fault_Handler_Continue
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MRS R0,PSP
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MRS R0,MSP
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LDR R1,=0x4
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MOV R2,LR
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TST R2,R1 // Check EXC_RETURN for bit 2
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BEQ Fault_Handler_Continue
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MRS R0,PSP
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Fault_Handler_Continue:
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MOV R12,R3
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LDR R3,=mbed_fault_context
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LDR R1,[R3]
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LDR R2,[R0] // Capture R0
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#4] // Capture R1
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#8] // Capture R2
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#12] // Capture R3
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STR R2,[R1]
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ADDS R1,#4
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STMIA R1!,{R4-R7} // Capture R4..R7
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MOV R7,R8 // Capture R8
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STR R7,[R1]
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ADDS R1,#4
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MOV R7,R9 // Capture R9
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STR R7,[R1]
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ADDS R1,#4
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MOV R7,R10 // Capture R10
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STR R7,[R1]
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ADDS R1,#4
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MOV R7,R11 // Capture R11
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STR R7,[R1]
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ADDS R1,#4
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LDR R2,[R0,#16] // Capture R12
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STR R2,[R1]
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ADDS R1,#8 // Add 8 here to capture LR next, we will capture SP later
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LDR R2,[R0,#20] // Capture LR
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#24] // Capture PC
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#28] // Capture xPSR
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STR R2,[R1]
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ADDS R1,#4
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MOV R12,R3
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LDR R3,=mbed_fault_context
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LDR R1,[R3]
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LDR R2,[R0] // Capture R0
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#4] // Capture R1
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#8] // Capture R2
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#12] // Capture R3
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STR R2,[R1]
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ADDS R1,#4
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STMIA R1!,{R4-R7} // Capture R4..R7
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MOV R7,R8 // Capture R8
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STR R7,[R1]
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ADDS R1,#4
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MOV R7,R9 // Capture R9
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STR R7,[R1]
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ADDS R1,#4
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MOV R7,R10 // Capture R10
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STR R7,[R1]
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ADDS R1,#4
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MOV R7,R11 // Capture R11
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STR R7,[R1]
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ADDS R1,#4
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LDR R2,[R0,#16] // Capture R12
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STR R2,[R1]
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ADDS R1,#8 // Add 8 here to capture LR next, we will capture SP later
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LDR R2,[R0,#20] // Capture LR
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#24] // Capture PC
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STR R2,[R1]
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ADDS R1,#4
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LDR R2,[R0,#28] // Capture xPSR
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STR R2,[R1]
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ADDS R1,#4
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// Adjust stack pointer to its original value and capture it
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MOV R3,R0
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ADDS R3,#0x20 // Add 0x20 to get the SP value prior to exception
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LDR R6,=0x200
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TST R2,R6 // Check for if STK was aligned by checking bit-9 in xPSR value
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BEQ Fault_Handler_Continue1
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ADDS R3,#0x4
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MOV R3,R0
|
||||
ADDS R3,#0x20 // Add 0x20 to get the SP value prior to exception
|
||||
LDR R6,=0x200
|
||||
TST R2,R6 // Check for if STK was aligned by checking bit-9 in xPSR value
|
||||
BEQ Fault_Handler_Continue1
|
||||
ADDS R3,#0x4
|
||||
|
||||
Fault_Handler_Continue1:
|
||||
MOV R5,LR
|
||||
LDR R6,=0x10 // Check for bit-4 to see if FP context was saved
|
||||
TST R5,R6
|
||||
BNE Fault_Handler_Continue2
|
||||
ADDS R3,#0x48 // 16 FP regs + FPCSR + 1 Reserved
|
||||
MOV R5,LR
|
||||
LDR R6,=0x10 // Check for bit-4 to see if FP context was saved
|
||||
TST R5,R6
|
||||
BNE Fault_Handler_Continue2
|
||||
ADDS R3,#0x48 // 16 FP regs + FPCSR + 1 Reserved
|
||||
|
||||
Fault_Handler_Continue2:
|
||||
MOV R4,R1
|
||||
SUBS R4,#0x10 // Set the location of SP in ctx
|
||||
STR R3,[R4] // Capture the adjusted SP
|
||||
MRS R2,PSP // Get PSP
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
MRS R2,MSP // Get MSP
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
MOV R2,LR // Get current LR(EXC_RETURN)
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
MRS R2,CONTROL // Get CONTROL Reg
|
||||
STR R2,[R1]
|
||||
MOV R0,R12
|
||||
LDR R3,=mbed_fault_context
|
||||
LDR R1,[R3]
|
||||
BL mbed_fault_handler
|
||||
MOV R4,R1
|
||||
SUBS R4,#0x10 // Set the location of SP in ctx
|
||||
STR R3,[R4] // Capture the adjusted SP
|
||||
MRS R2,PSP // Get PSP
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
MRS R2,MSP // Get MSP
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
MOV R2,LR // Get current LR(EXC_RETURN)
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
MRS R2,CONTROL // Get CONTROL Reg
|
||||
STR R2,[R1]
|
||||
MOV R0,R12
|
||||
LDR R3,=mbed_fault_context
|
||||
LDR R1,[R3]
|
||||
BL mbed_fault_handler
|
||||
#endif
|
||||
B . // Just in case we come back here
|
||||
|
||||
B . // Just in case we come back here
|
||||
|
||||
.fnend
|
||||
.size Fault_Handler, .-Fault_Handler
|
||||
.size Fault_Handler, .-Fault_Handler
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
.end
|
||||
|
||||
|
||||
|
|
|
@ -17,139 +17,139 @@
|
|||
; *
|
||||
; * -----------------------------------------------------------------------------
|
||||
; *
|
||||
; * Title: Cortex-M Fault Exception handlers ( Common for both ARMv7M and ARMV6M );
|
||||
; * Title: Cortex-M Fault Exception handlers ( Common for both ARMv7M and ARMV6M )
|
||||
; *
|
||||
; * -----------------------------------------------------------------------------
|
||||
; */
|
||||
|
||||
NAME except.S
|
||||
|
||||
FAULT_TYPE_HARD_FAULT EQU 0x10
|
||||
FAULT_TYPE_MEMMANAGE_FAULT EQU 0x20
|
||||
FAULT_TYPE_BUS_FAULT EQU 0x30
|
||||
FAULT_TYPE_USAGE_FAULT EQU 0x40
|
||||
NAME except.S
|
||||
|
||||
#ifndef MBED_FAULT_HANDLER_DISABLED
|
||||
|
||||
|
||||
#ifndef DOMAIN_NS
|
||||
#define DOMAIN_NS 1
|
||||
#endif
|
||||
PRESERVE8
|
||||
SECTION .rodata:DATA:NOROOT(2)
|
||||
|
||||
THUMB
|
||||
SECTION .text:CODE:NOROOT(2)
|
||||
|
||||
FAULT_TYPE_HARD_FAULT EQU 0x10
|
||||
FAULT_TYPE_MEMMANAGE_FAULT EQU 0x20
|
||||
FAULT_TYPE_BUS_FAULT EQU 0x30
|
||||
FAULT_TYPE_USAGE_FAULT EQU 0x40
|
||||
|
||||
PRESERVE8
|
||||
THUMB
|
||||
|
||||
SECTION .text:CODE:NOROOT(2)
|
||||
|
||||
HardFault_Handler
|
||||
EXPORT HardFault_Handler
|
||||
LDR R3,=FAULT_TYPE_HARD_FAULT
|
||||
B Fault_Handler
|
||||
|
||||
EXPORT HardFault_Handler
|
||||
LDR R3,=FAULT_TYPE_HARD_FAULT
|
||||
B Fault_Handler
|
||||
|
||||
MemManage_Handler
|
||||
EXPORT MemManage_Handler
|
||||
LDR R3,=FAULT_TYPE_MEMMANAGE_FAULT
|
||||
B Fault_Handler
|
||||
EXPORT MemManage_Handler
|
||||
LDR R3,=FAULT_TYPE_MEMMANAGE_FAULT
|
||||
B Fault_Handler
|
||||
|
||||
BusFault_Handler
|
||||
EXPORT BusFault_Handler
|
||||
LDR R3,=FAULT_TYPE_BUS_FAULT
|
||||
B Fault_Handler
|
||||
|
||||
EXPORT BusFault_Handler
|
||||
LDR R3,=FAULT_TYPE_BUS_FAULT
|
||||
B Fault_Handler
|
||||
|
||||
UsageFault_Handler
|
||||
EXPORT UsageFault_Handler
|
||||
LDR R3,=FAULT_TYPE_USAGE_FAULT
|
||||
B Fault_Handler
|
||||
|
||||
EXPORT UsageFault_Handler
|
||||
LDR R3,=FAULT_TYPE_USAGE_FAULT
|
||||
B Fault_Handler
|
||||
|
||||
Fault_Handler
|
||||
EXPORT Fault_Handler
|
||||
EXPORT Fault_Handler
|
||||
#if (DOMAIN_NS == 1)
|
||||
IMPORT mbed_fault_context
|
||||
IMPORT mbed_fault_handler
|
||||
|
||||
MRS R0,MSP
|
||||
LDR R1,=0x4
|
||||
MOV R2,LR
|
||||
TST R2,R1 ; Check EXC_RETURN for bit 2
|
||||
BEQ Fault_Handler_Continue
|
||||
MRS R0,PSP
|
||||
IMPORT mbed_fault_context
|
||||
IMPORT mbed_fault_handler
|
||||
|
||||
MRS R0,MSP
|
||||
LDR R1,=0x4
|
||||
MOV R2,LR
|
||||
TST R2,R1 ; Check EXC_RETURN for bit 2
|
||||
BEQ Fault_Handler_Continue
|
||||
MRS R0,PSP
|
||||
|
||||
Fault_Handler_Continue
|
||||
MOV R12,R3
|
||||
LDR R3,=mbed_fault_context
|
||||
LDR R1,[R3]
|
||||
LDR R2,[R0] ; Capture R0
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
LDR R2,[R0,#4] ; Capture R1
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
LDR R2,[R0,#8] ; Capture R2
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
LDR R2,[R0,#12] ; Capture R3
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
STMIA R1!,{R4-R7} ; Capture R4..R7
|
||||
MOV R7,R8 ; Capture R8
|
||||
STR R7,[R1]
|
||||
ADDS R1,#4
|
||||
MOV R7,R9 ; Capture R9
|
||||
STR R7,[R1]
|
||||
ADDS R1,#4
|
||||
MOV R7,R10 ; Capture R10
|
||||
STR R7,[R1]
|
||||
ADDS R1,#4
|
||||
MOV R7,R11 ; Capture R11
|
||||
STR R7,[R1]
|
||||
ADDS R1,#4
|
||||
LDR R2,[R0,#16] ; Capture R12
|
||||
STR R2,[R1]
|
||||
ADDS R1,#8 ; Add 8 here to capture LR next, we will capture SP later
|
||||
LDR R2,[R0,#20] ; Capture LR
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
LDR R2,[R0,#24] ; Capture PC
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
LDR R2,[R0,#28] ; Capture xPSR
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
; Adjust stack pointer to its original value and capture it
|
||||
MOV R3,R0
|
||||
ADDS R3,#0x20 ; Add 0x20 to get the SP value prior to exception
|
||||
LDR R6,=0x200
|
||||
TST R2,R6 ; Check for if STK was aligned by checking bit-9 in xPSR value
|
||||
BEQ Fault_Handler_Continue1
|
||||
ADDS R3,#0x4
|
||||
|
||||
MOV R12,R3
|
||||
LDR R3,=mbed_fault_context
|
||||
LDR R1,[R3]
|
||||
LDR R2,[R0] ; Capture R0
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
LDR R2,[R0,#4] ; Capture R1
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
LDR R2,[R0,#8] ; Capture R2
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
LDR R2,[R0,#12] ; Capture R3
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
STMIA R1!,{R4-R7} ; Capture R4..R7
|
||||
MOV R7,R8 ; Capture R8
|
||||
STR R7,[R1]
|
||||
ADDS R1,#4
|
||||
MOV R7,R9 ; Capture R9
|
||||
STR R7,[R1]
|
||||
ADDS R1,#4
|
||||
MOV R7,R10 ; Capture R10
|
||||
STR R7,[R1]
|
||||
ADDS R1,#4
|
||||
MOV R7,R11 ; Capture R11
|
||||
STR R7,[R1]
|
||||
ADDS R1,#4
|
||||
LDR R2,[R0,#16] ; Capture R12
|
||||
STR R2,[R1]
|
||||
ADDS R1,#8 ; Add 8 here to capture LR next, we will capture SP later
|
||||
LDR R2,[R0,#20] ; Capture LR
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
LDR R2,[R0,#24] ; Capture PC
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
LDR R2,[R0,#28] ; Capture xPSR
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
; Adjust stack pointer to its original value and capture it
|
||||
MOV R3,R0
|
||||
ADDS R3,#0x20 ; Add 0x20 to get the SP value prior to exception
|
||||
LDR R6,=0x200
|
||||
TST R2,R6 ; Check for if STK was aligned by checking bit-9 in xPSR value
|
||||
BEQ Fault_Handler_Continue1
|
||||
ADDS R3,#0x4
|
||||
|
||||
Fault_Handler_Continue1
|
||||
MOV R5,LR
|
||||
LDR R6,=0x10 ; Check for bit-4 to see if FP context was saved
|
||||
TST R5,R6
|
||||
BNE Fault_Handler_Continue2
|
||||
ADDS R3,#0x48 ; 16 FP regs + FPCSR + 1 Reserved
|
||||
MOV R5,LR
|
||||
LDR R6,=0x10 ; Check for bit-4 to see if FP context was saved
|
||||
TST R5,R6
|
||||
BNE Fault_Handler_Continue2
|
||||
ADDS R3,#0x48 ; 16 FP regs + FPCSR + 1 Reserved
|
||||
|
||||
Fault_Handler_Continue2
|
||||
MOV R4,R1
|
||||
SUBS R4,#0x10 ; Set the location of SP in ctx
|
||||
STR R3,[R4] ; Capture the adjusted SP
|
||||
MRS R2,PSP ; Get PSP
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
MRS R2,MSP ; Get MSP
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
MOV R2,LR ; Get current LR(EXC_RETURN)
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
MRS R2,CONTROL ; Get CONTROL Reg
|
||||
STR R2,[R1]
|
||||
MOV R0,R12
|
||||
LDR R3,=mbed_fault_context
|
||||
LDR R1,[R3]
|
||||
BL mbed_fault_handler
|
||||
#endif
|
||||
B . ; Just in case we come back here
|
||||
#endif ; #if (MBED_FAULT_HANDLER_SUPPORT == 1)
|
||||
MOV R4,R1
|
||||
SUBS R4,#0x10 ; Set the location of SP in ctx
|
||||
STR R3,[R4] ; Capture the adjusted SP
|
||||
MRS R2,PSP ; Get PSP
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
MRS R2,MSP ; Get MSP
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
MOV R2,LR ; Get current LR(EXC_RETURN)
|
||||
STR R2,[R1]
|
||||
ADDS R1,#4
|
||||
MRS R2,CONTROL ; Get CONTROL Reg
|
||||
STR R2,[R1]
|
||||
MOV R0,R12
|
||||
LDR R3,=mbed_fault_context
|
||||
LDR R1,[R3]
|
||||
BL mbed_fault_handler
|
||||
#endif
|
||||
B . ; Just in case we come back here
|
||||
#endif
|
||||
|
||||
END
|
||||
END
|
||||
|
|
Loading…
Reference in New Issue