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Entirely remove the need for binutils

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This commit is contained in:
Gwilym Inzani 2023-04-30 18:14:01 +01:00
parent 2012f2ec35
commit 5ab0176ddb
26 changed files with 67 additions and 153 deletions
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71
agb/build.rs
View file

@ -1,76 +1,5 @@
use std::path;
fn main() {
let asm = &[
"src/crt0.s",
"src/interrupt_handler.s",
"src/sound/mixer/mixer.s",
"src/agbabi/memset.s",
"src/agbabi/memcpy.s",
"src/save/asm_routines.s",
];
println!("cargo:rerun-if-changed=gba.ld");
println!("cargo:rerun-if-changed=gba_mb.ld");
println!("cargo:rerun-if-changed=src/asm_include.s");
println!("cargo:rerun-if-changed=src/agbabi/macros.inc");
println!("cargo:rerun-if-changed=gfx/test_logo.png");
println!("cargo:rerun-if-changed=build.rs");
let out_dir = std::env::var("OUT_DIR").expect("OUT_DIR environment variable must be specified");
let mut o_files = vec![];
for &a in asm.iter() {
println!("cargo:rerun-if-changed={a}");
let filename = path::Path::new(a);
let filename = filename.with_extension("o");
let filename = filename
.file_name()
.expect("should have filename")
.to_str()
.expect("Please make it valid utf-8");
let out_file_path = format!("{out_dir}/{filename}");
let out = std::process::Command::new("arm-none-eabi-as")
.arg("-mthumb-interwork")
.arg("-mcpu=arm7tdmi")
.arg("-g")
.args(["-o", out_file_path.as_str()])
.arg(a)
.output()
.unwrap_or_else(|_| panic!("failed to compile {a}"));
assert!(
out.status.success(),
"{}",
String::from_utf8_lossy(&out.stderr)
);
for warning_line in String::from_utf8_lossy(&out.stderr).split('\n') {
if !warning_line.is_empty() {
println!("cargo:warning={warning_line}");
}
}
o_files.push(out_file_path);
}
let archive = format!("{out_dir}/agb.a");
let _ = std::fs::remove_file(&archive);
let ar_out = std::process::Command::new("arm-none-eabi-ar")
.arg("-crs")
.arg(&archive)
.args(&o_files)
.output()
.expect("Failed to create static library");
assert!(
ar_out.status.success(),
"{}",
String::from_utf8_lossy(&ar_out.stderr)
);
println!("cargo:rustc-link-search={out_dir}");
}

2
agb/gba.ld
View file

@ -15,8 +15,6 @@ MEMORY {
__text_start = ORIGIN(rom);
INPUT (agb.a)
SECTIONS {
. = __text_start;

2
agb/gba_mb.ld
View file

@ -14,8 +14,6 @@ MEMORY {
__text_start = ORIGIN(ewram);
INPUT (agb.a)
SECTIONS {
. = __text_start;

44
agb/src/agbabi/memcpy.s
View file

@ -32,14 +32,14 @@ __aeabi_memcpy:
joaobapt_test r3
// Copy byte head to align
ldrmib r3, [r1], #1
strmib r3, [r0], #1
ldrbmi r3, [r1], #1
strbmi r3, [r0], #1
submi r2, r2, #1
// r0, r1 are now half aligned
// Copy half head to align
ldrcsh r3, [r1], #2
strcsh r3, [r0], #2
ldrhcs r3, [r1], #2
strhcs r3, [r0], #2
subcs r2, r2, #2
// r0, r1 are now word aligned
@ -51,13 +51,13 @@ __aeabi_memcpy4:
blt .Lcopy_words
// Word aligned, 32-byte copy
push {r4-r10}
push {{r4-r10}}
.Lloop_32:
subs r2, r2, #32
ldmgeia r1!, {r3-r10}
stmgeia r0!, {r3-r10}
ldmiage r1!, {{r3-r10}}
stmiage r0!, {{r3-r10}}
bgt .Lloop_32
pop {r4-r10}
pop {{r4-r10}}
bxeq lr
// < 32 bytes remaining to be copied
@ -77,40 +77,40 @@ __aeabi_memcpy4:
// This test still works when r2 is negative
joaobapt_test r2
// Copy half
ldrcsh r3, [r1], #2
strcsh r3, [r0], #2
ldrhcs r3, [r1], #2
strhcs r3, [r0], #2
// Copy byte
ldrmib r3, [r1]
strmib r3, [r0]
ldrbmi r3, [r1]
strbmi r3, [r0]
bx lr
.Lcopy_halves:
// Copy byte head to align
tst r0, #1
ldrneb r3, [r1], #1
strneb r3, [r0], #1
ldrbne r3, [r1], #1
strbne r3, [r0], #1
subne r2, r2, #1
// r0, r1 are now half aligned
.global __agbabi_memcpy2
__agbabi_memcpy2:
subs r2, r2, #2
ldrgeh r3, [r1], #2
strgeh r3, [r0], #2
ldrhge r3, [r1], #2
strhge r3, [r0], #2
bgt __agbabi_memcpy2
bxeq lr
// Copy byte tail
adds r2, r2, #1
ldreqb r3, [r1]
streqb r3, [r0]
ldrbeq r3, [r1]
strbeq r3, [r0]
bx lr
.global __agbabi_memcpy1
__agbabi_memcpy1:
subs r2, r2, #1
ldrgeb r3, [r1], #1
strgeb r3, [r0], #1
ldrbge r3, [r1], #1
strbge r3, [r0], #1
bgt __agbabi_memcpy1
bx lr
@ -118,7 +118,7 @@ __agbabi_memcpy1:
.align 2
.global memcpy
memcpy:
push {r0, lr}
push {{r0, lr}}
bl __aeabi_memcpy
pop {r0, lr}
pop {{r0, lr}}
bx lr

24
agb/src/agbabi/memset.s
View file

@ -40,9 +40,9 @@ __aeabi_memset:
// JoaoBapt carry & sign bit test
movs r1, r1, lsl #31
// Set byte and half
strmib r2, [r0], #1
strcsb r2, [r0], #1
strcsb r2, [r0]
strbmi r2, [r0], #1
strbcs r2, [r0], #1
strbcs r2, [r0]
bx lr
.LskipShortHead:
@ -50,9 +50,9 @@ __aeabi_memset:
// JoaoBapt carry & sign bit test
movs r3, r3, lsl #31
// Set half and byte head
strmib r2, [r0], #1
strbmi r2, [r0], #1
submi r1, r1, #1
strcsh r2, [r0], #2
strhcs r2, [r0], #2
subcs r1, r1, #2
b __agbabi_wordset4
@ -79,7 +79,7 @@ __agbabi_wordset4:
beq .Lskip32
lsl r3, r12, #5
sub r1, r1, r3
push {r4-r9}
push {{r4-r9}}
mov r3, r2
mov r4, r2
mov r5, r2
@ -88,10 +88,10 @@ __agbabi_wordset4:
mov r8, r2
mov r9, r2
.LsetWords8:
stmia r0!, {r2-r9}
stmia r0!, {{r2-r9}}
subs r12, r12, #1
bne .LsetWords8
pop {r4-r9}
pop {{r4-r9}}
.Lskip32:
// Set words
@ -104,8 +104,8 @@ __agbabi_wordset4:
// Set half and byte tail
// JoaoBapt carry & sign bit test
movs r3, r1, lsl #31
strcsh r2, [r0], #2
strmib r2, [r0]
strhcs r2, [r0], #2
strbmi r2, [r0]
bx lr
.section .iwram.memset, "ax", %progbits
@ -115,7 +115,7 @@ memset:
mov r3, r1
mov r1, r2
mov r2, r3
push {r0, lr}
push {{r0, lr}}
bl __aeabi_memset
pop {r0, lr}
pop {{r0, lr}}
bx lr

5
agb/src/agbabi/mod.rs
View file

@ -1,3 +1,8 @@
use core::arch::global_asm;
global_asm!(include_str!("memcpy.s"));
global_asm!(include_str!("memset.s"));
#[cfg(test)]
mod test {
mod memset {

8
agb/src/asm_include.s
View file

@ -4,14 +4,14 @@
.align 2
.global \functionName
.type \functionName, %function
.func \functionName
@ .func \functionName
\functionName:
.endm
.macro agb_arm_end functionName:req
.pool
.size \functionName,.-\functionName
.endfunc
@ .endfunc
.endm
.macro agb_thumb_func functionName:req
@ -20,12 +20,12 @@
.align 1
.global \functionName
.type \functionName, %function
.func \functionName
@ .func \functionName
\functionName:
.endm
.macro agb_thumb_end functionName:req
.pool
.size \functionName,.-\functionName
.endfunc
@ .endfunc
.endm

5
agb/src/global_asm.rs Normal file
View file

@ -0,0 +1,5 @@
use core::arch::global_asm;
global_asm!(include_str!("crt0.s"));
global_asm!(include_str!("interrupt_handler.s"));
global_asm!(include_str!("sound/mixer/mixer.s"));

4
agb/src/interrupt_handler.s
View file

@ -26,10 +26,10 @@ InterruptHandler:
@ call the rust interrupt handler with r0 set to the triggered interrupts
ldr r1, =__RUST_INTERRUPT_HANDLER
push {r2, lr}
push {{r2, lr}}
mov lr, pc
bx r1
pop {r2, lr}
pop {{r2, lr}}
@ change back to interrupt mode
mrs r1, cpsr

1
agb/src/lib.rs
View file

@ -174,6 +174,7 @@ mod no_game;
pub use no_game::no_game;
pub(crate) mod arena;
mod global_asm;
pub use {agb_alloc::ExternalAllocator, agb_alloc::InternalAllocator};

10
agb/src/save/asm_routines.s
View file

@ -16,7 +16,7 @@ agb_thumb_end agb_rs__WramReadByte
@ A routine that compares two memory offsets.
@
agb_thumb_func agb_rs__WramVerifyBuf
push {r4-r5, lr}
push {{r4-r5, lr}}
movs r5, r0 @ set up r5 to be r0, so we can use it immediately for the return result
movs r0, #0 @ set up r0 so the default return result is false
@ -25,14 +25,14 @@ agb_thumb_func agb_rs__WramVerifyBuf
ldrb r4, [r1,r2]
cmp r3, r4
bne 0f
sub r2, #1
subs r2, #1
bpl 1b
@ Returns from the function successfully
movs r0, #1
0: @ Jumps to here return the function unsuccessfully, because r0 contains 0 at this point
pop {r4-r5}
pop {r1}
pop {{r4-r5}}
pop {{r1}}
bx r1
agb_thumb_end agb_rs__WramVerifyBuf
@ -43,7 +43,7 @@ agb_thumb_end agb_rs__WramVerifyBuf
@ A routine that copies one buffer into another.
@
agb_thumb_func agb_rs__WramTransferBuf
0: sub r2, #1
0: subs r2, #1
ldrb r3, [r0,r2]
strb r3, [r1,r2]
bne 0b

4
agb/src/save/mod.rs
View file

@ -90,12 +90,16 @@ use crate::sync::{Mutex, RawMutexGuard};
use crate::timer::Timer;
use core::ops::Range;
use core::arch::global_asm;
mod asm_utils;
mod eeprom;
mod flash;
mod sram;
mod utils;
global_asm!(include_str!("asm_routines.s"));
/// A list of save media types.
#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Debug)]
#[non_exhaustive]

14
agb/src/sound/mixer/mixer.s
View file

@ -15,7 +15,7 @@ agb_arm_func agb_rs__mixer_add
@ stack position 1 - amount to modify the right channel by (u16 fixnum with 4 bits)
@
@ The sound buffer must be SOUND_BUFFER_SIZE * 2 in size = 176 * 2
push {r4-r8}
push {{r4-r8}}
ldr r7, [sp, #20] @ load the right channel modification amount into r7
@ -46,7 +46,7 @@ modifications_fallback:
subs r8, r8, #4 @ loop counter
bne 1b @ jump back if we're done with the loop
pop {r4-r8}
pop {{r4-r8}}
bx lr
same_modification:
@ -88,7 +88,7 @@ same_modification:
subs r8, r8, #4 @ loop counter
bne 1b @ jump back if we're done with the loop
pop {r4-r8}
pop {{r4-r8}}
bx lr
agb_arm_end agb_rs__mixer_add
@ -100,7 +100,7 @@ agb_arm_func agb_rs__mixer_add_stereo
@ r2 - volume to play the sound at
@
@ The sound buffer must be SOUND_BUFFER_SIZE * 2 in size = 176 * 2
push {r4-r9}
push {{r4-r9}}
mov r9, r2
ldr r5, =0x00000FFF
@ -140,7 +140,7 @@ agb_arm_func agb_rs__mixer_add_stereo
subs r8, r8, #4 @ loop counter
bne 1b @ jump back if we're done with the loop
pop {r4-r9}
pop {{r4-r9}}
bx lr
agb_arm_end agb_rs__mixer_add_stereo
@ -150,7 +150,7 @@ agb_arm_func agb_rs__mixer_collapse
@ r0 = target buffer (i8)
@ r1 = input buffer (i16) of fixnums with 4 bits of precision (read in sets of i16 in an i32)
push {r4-r11}
push {{r4-r11}}
CONST_0 .req r7
CONST_FF .req r8
@ -228,6 +228,6 @@ SWAP_SIGN .req r11
subs r2, r2, #16 @ r2 -= 16
bne 1b @ loop if not 0
pop {r4-r11}
pop {{r4-r11}}
bx lr
agb_arm_end agb_rs__mixer_collapse

2
book/games/pong/gba.ld
View file

@ -15,8 +15,6 @@ MEMORY {
__text_start = ORIGIN(rom);
INPUT (agb.a)
SECTIONS {
. = __text_start;

2
book/games/pong/gba_mb.ld
View file

@ -14,8 +14,6 @@ MEMORY {
__text_start = ORIGIN(ewram);
INPUT (agb.a)
SECTIONS {
. = __text_start;

2
examples/amplitude/gba.ld
View file

@ -15,8 +15,6 @@ MEMORY {
__text_start = ORIGIN(rom);
INPUT (agb.a)
SECTIONS {
. = __text_start;

2
examples/amplitude/gba_mb.ld
View file

@ -14,8 +14,6 @@ MEMORY {
__text_start = ORIGIN(ewram);
INPUT (agb.a)
SECTIONS {
. = __text_start;

2
examples/combo/gba.ld
View file

@ -15,8 +15,6 @@ MEMORY {
__text_start = ORIGIN(rom);
INPUT (agb.a)
SECTIONS {
. = __text_start;

2
examples/combo/gba_mb.ld
View file

@ -14,8 +14,6 @@ MEMORY {
__text_start = ORIGIN(ewram);
INPUT (agb.a)
SECTIONS {
. = __text_start;

2
examples/hyperspace-roll/gba.ld
View file

@ -15,8 +15,6 @@ MEMORY {
__text_start = ORIGIN(rom);
INPUT (agb.a)
SECTIONS {
. = __text_start;

2
examples/hyperspace-roll/gba_mb.ld
View file

@ -14,8 +14,6 @@ MEMORY {
__text_start = ORIGIN(ewram);
INPUT (agb.a)
SECTIONS {
. = __text_start;

2
examples/the-hat-chooses-the-wizard/gba.ld
View file

@ -15,8 +15,6 @@ MEMORY {
__text_start = ORIGIN(rom);
INPUT (agb.a)
SECTIONS {
. = __text_start;

2
examples/the-purple-night/gba.ld
View file

@ -15,8 +15,6 @@ MEMORY {
__text_start = ORIGIN(rom);
INPUT (agb.a)
SECTIONS {
. = __text_start;

2
examples/the-purple-night/gba_mb.ld
View file

@ -14,8 +14,6 @@ MEMORY {
__text_start = ORIGIN(ewram);
INPUT (agb.a)
SECTIONS {
. = __text_start;

2
template/gba.ld
View file

@ -15,8 +15,6 @@ MEMORY {
__text_start = ORIGIN(rom);
INPUT (agb.a)
SECTIONS {
. = __text_start;

2
template/gba_mb.ld
View file

@ -14,8 +14,6 @@ MEMORY {
__text_start = ORIGIN(ewram);
INPUT (agb.a)
SECTIONS {
. = __text_start;