5 files changed, 93 insertions(+), 0 deletions(-)

A programs/add.c
A programs/add.s
A programs/link.ld
A programs/start.S
A programs/tests.c

@@ 0,0 1,11 @@
+int add(int a, int b)
+{
+    return a + b;
+}
+
+void main()
+{
+    int a = 20;
+    int b = 30;
+    int c = add(a, b);
+}

@@ 0,0 1,46 @@
+	.file	"add.c"
+	.option nopic
+	.attribute arch, "rv32i2p1"
+	.attribute unaligned_access, 0
+	.attribute stack_align, 16
+	.text
+	.align	2
+	.globl	add
+	.type	add, @function
+add:
+	addi	sp,sp,-32
+	sw	s0,28(sp)
+	addi	s0,sp,32
+	sw	a0,-20(s0)
+	sw	a1,-24(s0)
+	lw	a4,-20(s0)
+	lw	a5,-24(s0)
+	add	a5,a4,a5
+	mv	a0,a5
+	lw	s0,28(sp)
+	addi	sp,sp,32
+	jr	ra
+	.size	add, .-add
+	.align	2
+	.globl	main
+	.type	main, @function
+main:
+	addi	sp,sp,-32
+	sw	ra,28(sp)
+	sw	s0,24(sp)
+	addi	s0,sp,32
+	li	a5,20
+	sw	a5,-20(s0)
+	li	a5,30
+	sw	a5,-24(s0)
+	lw	a1,-24(s0)
+	lw	a0,-20(s0)
+	call	add
+	sw	a0,-28(s0)
+	nop
+	lw	ra,28(sp)
+	lw	s0,24(sp)
+	addi	sp,sp,32
+	jr	ra
+	.size	main, .-main
+	.ident	"GCC: (GNU) 12.2.0"

@@ 0,0 1,21 @@
+MEMORY
+{
+    ram : ORIGIN = 0x00000000, LENGTH = 1K - 1
+}
+
+SECTIONS
+{
+	.text = 0x0;
+    .bss : {
+        __bss_start = .;
+        *(.bss)
+        *(COMMON)
+        __bss_end = .;
+    } > ram
+    .stack : {
+        __stack_start = .;
+        *(.stack)
+        __stack_end = .;
+    } > ram
+}
+

@@ 0,0 1,8 @@
+.global _start
+
+.text
+_start:
+    addi sp, x0, 127
+    call main
+_loop:
+    j _loop

@@ 0,0 1,7 @@
+void main()
+{
+	signed char a = -10;
+	signed char b = a << 1;
+	unsigned char c = ((unsigned char)b) >> 1;
+	signed char d = b >> 1;
+}