diff options
Diffstat (limited to 'prog')
| -rw-r--r-- | prog/link.ld | 4 | ||||
| -rw-r--r-- | prog/src/main.c | 2 | ||||
| -rw-r--r-- | prog/src/prog.s (renamed from prog/src/prog.s.bak) | 37 |
3 files changed, 12 insertions, 31 deletions
diff --git a/prog/link.ld b/prog/link.ld index 4cc02ec..7bd11eb 100644 --- a/prog/link.ld +++ b/prog/link.ld @@ -43,7 +43,7 @@ SECTIONS .stack (NOLOAD) : { _stack_start = .; - . += 0x10; /* Adjust the size as needed */ + . += 0x80; /* Adjust the size as needed */ _stack_end = .; } > RAM @@ -51,7 +51,7 @@ SECTIONS .heap (NOLOAD) : { _heap_start = .; - . += 0x10; /* Adjust the size as needed */ + . += 0x80; /* Adjust the size as needed */ _heap_end = .; } > RAM } diff --git a/prog/src/main.c b/prog/src/main.c index 1ce067c..8bcdfe2 100644 --- a/prog/src/main.c +++ b/prog/src/main.c @@ -1,6 +1,8 @@ +extern void test_prog(void); int main(void) { + test_prog(); while (1) { } } diff --git a/prog/src/prog.s.bak b/prog/src/prog.s index 63026c9..ec227a9 100644 --- a/prog/src/prog.s.bak +++ b/prog/src/prog.s @@ -1,11 +1,5 @@ .section .text -.globl _start - -_start: - - - j test_prog - +.globl test_prog /* @@ -18,9 +12,6 @@ loop: j loop */ -halt_loop: - j halt_loop - test_prog: li t0, 0xFFFFFFFF li t1, 0x33333333 @@ -45,19 +36,25 @@ test_prog: beq t0, t0, branch_eq j branch_eq_nt +end: + ret branch_eq_ret: beq t0, t3, branch_ne j branch_ne_nt branch_ne_ret: + addi sp, sp, -16 # Adjust stack pointer to make space for ra and s0 + sw ra, 0(sp) # Save ra to the stack call func + lw ra, 0(sp) # Load ra from the stack + addi sp, sp, 16 # Restore stack pointer li t0, 0x00100000 sw t1, 0(t0) lw t2, 0(t0) - j halt_loop + j end branch_eq: @@ -79,21 +76,3 @@ branch_ne_nt: func: addi t5, zero, 5 ret - - - - - - - - - - -.section .data - - -.section .bss - -.section .stack - .space 0x1000 # Allocate stack space -stack_top: |