rp2040

commit d87427e253fed2f078fe90e9105b4a4783c5981d
parent da33981896d672ce74d31c0c776ceffbc1ff9e6a
Author: Matsuda Kenji <info@mtkn.jp>
Date:   Wed, 28 Feb 2024 14:34:45 +0900

move isr_svcall to c file

Diffstat:
M
ex3/main.c
 | 
3
++-
M
ex3/start.s
 | 
24
+-----------------------

2 files changed, 3 insertions(+), 24 deletions(-)
diff --git a/ex3/main.c b/ex3/main.c
@@ -7,5 +7,6 @@ main(void) {
 }
 
 void
-isr_alarm(void) {
+isr_svcall(void) {
+	puts("svcall\n");
 }
diff --git a/ex3/start.s b/ex3/start.s
@@ -129,33 +129,11 @@ loop:
 	ldr r0, =message
 	bl puts
 	wfi
+	svc #0
 	b loop
 
 // functions
 
-isr_svcall:
-	push {r4, lr}
-	mov r4, lr
-	mov r0, #'s'
-	bl putbyte
-	mov r0, #'v'
-	bl putbyte
-	mov r0, #'c'
-	bl putbyte
-	mov r0, #'a'
-	bl putbyte
-	mov r0, #'l'
-	bl putbyte
-	mov r0, #'l'
-	bl putbyte
-	mov r0, r4
-	bl printh
-	mov r0, #'\r'
-	bl putbyte
-	mov r0, #'\n'
-	bl putbyte
-	pop {r4, pc}
-
 isr_systick:
 	push {lr}
 	mov r0, #'\r'