23411830656

Committed 22 Mar 2026 08:28PM UTC coverage: 93.342% (-0.2%) from 93.565%

Build # 23411830656

Build Type

push

github

Committed by

henrythasler

Commit Message

fix local variables management

Coverage Stats

10 of 10 new or added lines in 2 files covered. (100.0%)

11 existing lines in 2 files now uncovered.

757 of 811 relevant lines covered (93.34%)

17.7 hits per line

Source File
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96.67

/src/assembler.rs

use aarch64::*;
pub mod aarch64;

pub fn emit_prologue(stack_size: usize, machinecode: &mut Vec<u32>) {
    machinecode.push(0xA9BF7BFD); // stp fp, lr, [sp, #-16]!  ; create a new stack frame
    machinecode.push(0x910003FD); // mov fp, sp

    if stack_size > 0 {
        if stack_size < 0x10000 {
            machinecode.push(arithmetic::sub_imm(
                Reg::SP,
                Reg::SP,
                stack_size as u32,
                false,
                RegSize::Reg64bit,
            ));
        } else {
            // FIXME: encode with movk and sub_shifted_reg
            panic!("stack_size exceeds 64KiB");
        }
    }
}

pub fn emit_epilogue(stack_size: usize, machinecode: &mut Vec<u32>) {
    if stack_size > 0 {
        // deallocate stack memory (add sp, sp, #stackSize)
        machinecode.push(arithmetic::add_imm(
            Reg::SP,
            Reg::SP,
            stack_size as u32,
            false,
            RegSize::Reg64bit,
        ));
    }
    machinecode.push(0xA8C17BFD); // ldp fp, lr, [sp], #16  ; destroy stack frame and restore FP, LR and SP
    machinecode.push(branch::ret(Reg::LR)); // ret
}

1	use aarch64::*;
2	pub mod aarch64;
3
4	pub fn emit_prologue(stack_size: usize, machinecode: &mut Vec<u32>) {	28✔
5	machinecode.push(0xA9BF7BFD); // stp fp, lr, [sp, #-16]! ; create a new stack frame	28✔
6	machinecode.push(0x910003FD); // mov fp, sp	28✔
7
8	if stack_size > 0 {	28✔
9	if stack_size < 0x10000 {	7✔
10	machinecode.push(arithmetic::sub_imm(	7✔
11	Reg::SP,	7✔
12	Reg::SP,	7✔
13	stack_size as u32,	7✔
14	false,	7✔
15	RegSize::Reg64bit,	7✔
16	));	7✔
17	} else {	7✔
18	// FIXME: encode with movk and sub_shifted_reg
UNCOV 19	panic!("stack_size exceeds 64KiB");	×
20	}
21	}	21✔
22	}	28✔
23
24	pub fn emit_epilogue(stack_size: usize, machinecode: &mut Vec<u32>) {	27✔
25	if stack_size > 0 {	27✔
26	// deallocate stack memory (add sp, sp, #stackSize)	7✔
27	machinecode.push(arithmetic::add_imm(	7✔
28	Reg::SP,	7✔
29	Reg::SP,	7✔
30	stack_size as u32,	7✔
31	false,	7✔
32	RegSize::Reg64bit,	7✔
33	));	7✔
34	}	20✔
35	machinecode.push(0xA8C17BFD); // ldp fp, lr, [sp], #16 ; destroy stack frame and restore FP, LR and SP	27✔
36	machinecode.push(branch::ret(Reg::LR)); // ret	27✔
37	}	27✔

henrythasler / rust-tiny-wasm / 23411830656

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