Data commit

This commit is contained in:
Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
199093 changed files with 3378972 additions and 0 deletions

View file

@ -0,0 +1,3 @@
STMFD sp!,{r0-r12,lr} ;push r0 thru r12 and the link register
LDMFD sp!,{r0-r12,pc} ;pop r0 thru r12, and the value that was in the link register is put into the program counter.
;This acts as a pop and return command all-in-one. (Most programs use bx lr to return.)

View file

@ -0,0 +1 @@
LDR r0,[sp] ;load the top of the stack into r0

View file

@ -0,0 +1,9 @@
;this example uses VASM syntax which considers a "word" to be 16-bit regardless of the architecture
InitStackPointer: .long 0x3FFFFFFF ;other assemblers would call this a "word"
MOV R1,#InitStackPointer
LDR SP,[R1] ;set up the stack pointer
LDR R2,[R1] ;also load it into R2
;There's no point in checking since we haven't pushed/popped anything but just for demonstration purposes we'll check now
CMP SP,R2
BEQ StackIsEmpty