Use ADS to compile and generate .axf file, and use ARM fromELF to extract executable file .bin------>can be directly written into Flash:
RO
Limit| ; Get pointer to ROM data
LDR r1, =|ImageR W
Base| ; and RAM copy
LDR r3, =|ImageZI
Base|
;Zero init base => top of initialised data
CMP r0, r1 ; Check that they are different, determine if RW needs to be moved
BEQ %F1
0
CMP r1, r3 ; Copy init data
LDRCC r2, [r0], #4 ;--> LDRCC r2, [r0] + ADD r0, r0, #4
STRCC r2, [r1], #4 ;--> STRCC r2, [r1] + ADD r1, r1, #4
BCC %B0
1
LDR r1, =|ImageZI
Limit| ; Top of zero init segment
MOV r2, #0
2
CMP r3, r1 ; Zero init
STRCC r2, [r3], #4
BCC %B2
Keywords：ARM
Reference address：ARM executable image file
The structure of bin file is RO+RW+ZI, where the address in RO is the same as the address of the symbol, but RW and ZI are different, so RW and ZI must be moved to the actual address before using them. You can refer to the source code of 44binit.s:
;****************************************************** *******
;* Copy and paste RW data/zero initialized data *
;****************************** ****************************
LDR r0, =|Image
LDR r1, =|Image
LDR r3, =|Image
;Zero init base => top of initialised data
CMP r0, r1 ; Check that they are different, determine if RW needs to be moved
BEQ %F1
0
CMP r1, r3 ; Copy init data
LDRCC r2, [r0], #4 ;--> LDRCC r2, [r0] + ADD r0, r0, #4
STRCC r2, [r1], #4 ;--> STRCC r2, [r1] + ADD r1, r1, #4
BCC %B0
1
LDR r1, =|Image
MOV r2, #0
2
CMP r3, r1 ; Zero init
STRCC r2, [r3], #4
BCC %B2
All ARM source code must be run before using the RW and ZI domains
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