int test1(int a, int b)
{
	return a + b;
}
void test(int a, int b)
{
	int c = test1(a, b);
}

$ ~/.local/zephyr-sdk/mips-zephyr-elf/bin/mips-zephyr-elf-gcc -O0 -c test.c -mips16
$ ~/.local/zephyr-sdk/mips-zephyr-elf/bin/mips-zephyr-elf-objdump -S test.o

test.o: file format elf32-bigmips
Disassembly of section .text:
00000000 <test1>:
0:	63ff 	addiu	sp,-8
2:	d101 	sw	s1,4(sp)
4:	673d 	move	s1,sp
6:	d982 	sw	a0,8(s1)
8:	d9a3 	sw	a1,12(s1)
 a:	9962 	lw	v1,8(s1)
 c:	9943 	lw	v0,12(s1)
 e:	e349 	addu	v0,v1,v0
10:	65b9 	move	sp,s1
12:	9101 	lw	s1,4(sp)
14:	6301 	addiu	sp,8
16:	e820 	jr	ra
18:	6500nop
 1a:	6500nop
0000001c <test>:
 1c:	63fc 	addiu	sp,-32
 1e:	677f 	move	v1,ra
20:	d307 	sw	v1,28(sp)
22:	d106 	sw	s1,24(sp)
24:	0104 	addiu	s1,sp,16
26:	d984 	sw	a0,16(s1)
28:	d9a5 	sw	a1,20(s1)
 2a:	9965 	lw	v1,20(s1)
 2c:	9944 	lw	v0,16(s1)
 2e:	67a3 	move	a1,v1
30:	6782 	move	a0,v0
32:	18000000 	jal	0 <test1>
36:	6500nop
38:	d940 	sw	v0,0(s1)
 3a:	6500nop
 3c:	65b9 	move	sp,s1
 3e:	9703 	lw	a3,12(sp)
40:	9102 	lw	s1,8(sp)
42:	6302 	addiu	sp,16
44:	ef00 	jr	a3
46:	6500nop