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.cutekit/
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GNU GENERAL PUBLIC LICENSE
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How to Apply These Terms to Your New Programs
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Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

12
build Executable file
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#!/usr/bin/env -S uv run -s
# /// script
# requires-python = ">=3.11"
# dependencies = [
# "cutekit @ git+https://github.com/cute-engineering/cutekit.git@stable",
# ]
# ///
import sys
import cutekit as ck
sys.exit(ck.main())

5
meta/plugins/__init__.py Normal file
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from . import (
headers,
cli,
enforce_c99
)

24
meta/plugins/cli.py Normal file
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from cutekit import cli, model, shell, builder
@cli.command(None, "boot", "Boot the kernel inside of Qemu")
def _(args: model.RegistryArgs):
registry = model.Registry.use(args)
target = registry.lookup('kernel-riscv32', model.Target)
assert target is not None
component = registry.lookup('core', model.Component)
assert component is not None
scope = builder.TargetScope(registry, target)
kernelProduct = builder.build(scope, component)[0]
shell.exec(*[
"qemu-system-riscv32",
"-machine", "virt",
"-bios", "default",
"-nographic",
"-serial", "mon:stdio",
"-kernel", str(kernelProduct.path),
"--no-reboot",
])

12
meta/plugins/enforce_c99.py Normal file
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from cutekit.rules import rules
rules['cc'].args.append('-pedantic')
rules['cc'].args.append('-Wpedantic')
rules['cc'].args.append('-Wno-dollar-in-identifier-extension')
rules['cc'].args.append('-Wno-gnu-statement-expression-from-macro-expansion')
for arg in rules['cc'].args:
if "-std=" in arg:
rules['cc'].args.remove(arg)
rules['cc'].args.append('-std=c99')
break

33
meta/plugins/headers.py Normal file
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import os
from .hooks import hook
from cutekit import const, model, shell
from cutekit.builder import TargetScope
from pathlib import Path
@hook("generate-global-aliases")
def _(scope: TargetScope):
generatedDir = Path(shell.mkdir(os.path.join(const.GENERATED_DIR, "__aliases__")))
for c in scope.registry.iter(model.Component):
if c.type != model.Kind.LIB:
continue
modPath = shell.either(
[
os.path.join(c.dirname(), "_mod.h"),
os.path.join(c.dirname(), "mod.h"),
]
)
aliasPath = generatedDir / c.id
if modPath is None or os.path.exists(aliasPath):
continue
targetPath = f"{c.id}/{os.path.basename(modPath)}"
print(f"Generating alias <{c.id}> -> <{Path(modPath).absolute()}>")
# We can't generate an alias using symlinks because
# because this will break #pragma once in some compilers.
with open(aliasPath, "w") as f:
f.write("#pragma once\n")
f.write(f'#include "{Path(modPath).absolute()}"\n')

33
meta/plugins/hooks.py Normal file
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from cutekit import builder, model
from typing import Callable, Union, Literal
Hook = Callable[[builder.TargetScope], None]
_hooks: dict[str, Hook] = {}
def hook(name: str) -> Callable[[Hook], Hook]:
def decorator(func: Hook):
_hooks[name] = func
return func
return decorator
# ----- Monkey patch -----
_original_build = builder.build
def build(
scope: builder.TargetScope,
components: Union[list[model.Component], model.Component, Literal["all"]] = "all",
generateCompilationDb: bool = False,
noParallel: bool = False,
) -> list[builder.ProductScope]:
for k, v in _hooks.items():
print(f"Running hook '{k}'")
v(scope)
return _original_build(scope, components, generateCompilationDb, noParallel)
builder.build = build

58
meta/targets/kernel-riscv32.json Normal file
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.target.v1",
"id": "kernel-riscv32",
"type": "target",
"props": {
"toolchain": "clang",
"arch": "riscv32",
"bits": "32",
"sys": "kernel",
"abi": "sysv",
"encoding": "utf8",
"freestanding": true,
"host": false
},
"tools": {
"cc": {
"cmd": "{shell.latest('clang')}",
"args": [
"--target=riscv32",
"-nostdlib",
"-ffreestanding"
]
},
"cxx": {
"cmd": "{shell.latest('clang++')}",
"args": [
"--target=riscv32",
"-nostdlib",
"-ffreestanding"
]
},
"ld": {
"cmd": "{shell.latest('clang')}",
"args": [
"--target=riscv32",
"-nostdlib",
"-ffreestanding",
"-Wl,-Tmeta/targets/kernel-riscv32.ld"
],
"files": [
"meta/targets/kernel-riscv32.ld"
]
},
"ar": {
"cmd": "{shell.latest('llvm-ar')}",
"args": [
"rcs"
]
},
"as": {
"cmd": "{shell.latest('clang')}",
"args": [
"--target=riscv32",
"-c"
]
}
}
}

28
meta/targets/kernel-riscv32.ld Normal file
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ENTRY(_start)
SECTIONS {
. = 0x80200000;
.text :{
KEEP(*(.text.boot));
*(.text .text.*);
}
.rodata : ALIGN(4) {
*(.rodata .rodata.*);
}
.data : ALIGN(4) {
*(.data .data.*);
}
.bss : ALIGN(4) {
__bss = .;
*(.bss .bss.* .sbss .sbss.*);
__bss_end = .;
}
. = ALIGN(4);
. += 128 * 1024; /* 128KB */
__stack_top = .;
}

7
project.json Normal file
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.project.v1",
"type": "project",
"id": "kernel",
"version": "v0.1.0",
"extern": { }
}

10
src/kernel/core/manifest.json Normal file
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
"type": "exe",
"id": "core",
"requires": [
"hal",
"logger",
"runtime"
]
}

9
src/kernel/core/mod.c Normal file
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#include <fmt>
#include <hal>
#include <logger>
void kmain(void) {
info$("Hello, World!");
for (;;)
;
}

9
src/kernel/hal/manifest.json Normal file
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
"type": "lib",
"id": "hal",
"requires": [
"hal-impl",
"heap"
]
}

13
src/kernel/hal/mod.c Normal file
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#include "mod.h"
static int _writer(size_t n, char const* buf) {
for (size_t i = 0; i < n; i++) {
hal_putc(buf[i]);
}
return n;
}
Writer hal_writer(void) {
return _writer;
}

10
src/kernel/hal/mod.h Normal file
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#pragma once
#include <io>
void hal_setup(void);
void hal_putc(int ch);
Writer hal_writer(void);
void hal_brkpoint(void);

34
src/kernel/hal/rv32/boot.c Normal file
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#include <dtb>
#include <heap/bump.h>
#include <helpers/mem.h>
#include <logger>
#include <stddef.h>
#include <string.h>
#include "exception.h"
extern char __bss[], __bss_end[];
extern void kmain(void);
static uint8_t early_heap[kib$(20)];
void rv32_start(__attribute__((unused)) size_t hartid, uintptr_t dtb) {
write_csr$(stvec, (uint32_t)interrupt_kernel);
BumpAllocator alloc = bump_allocator_create((void*)early_heap, sizeof(early_heap));
dtb_init(dtb, &alloc.base);
DTBNode* mem = dtb_lookup("reserved-memory");
if (mem == NULL) {
error$("Failed to find reserved-memory node in device tree");
__asm__ volatile("ebreak");
}
DTBProp* prop = mem->props;
while (prop != NULL) {
debug$("prop: %s", prop->name);
prop = prop->next;
}
kmain();
}

11
src/kernel/hal/rv32/boot.s Normal file
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.section .text.boot
.global rv32_start
.type rv32_start, @function
.global _start
_start:
mv ra, zero
mv fp, zero
la sp, __stack_top
j rv32_start

55
src/kernel/hal/rv32/exception.c Normal file
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#include <logger>
#include "exception.h"
static char* exception_types[] = {
"Instruction address misaligned",
"Instruction access fault",
"Illegal instruction",
"Breakpoint",
"Load address misaligned",
"Load access fault",
"Store/AMO address misaligned",
"Store/AMO access fault",
"Environment call from U-mode",
"Environment call from S-mode",
"Reserved",
"Reserved",
"Instruction page fault",
"Load page fault",
"Reserved",
"Store/AMO page fault",
};
static void panic_handler(Stackframe* frame, uint32_t scause, uint32_t stval, uint32_t user_pc) {
print$("\n\x1b[0;31m!!! \x1b[33m---------------------------------------------------------------------------------------------------\x1b[0m\n\n");
print$(" KERNEL PANIC\n\n");
print$(" %s was raised\n", exception_types[scause]);
print$(" scause: %x, err: %x\n\n", scause, stval);
print$(" RA %p GP %p TP %p SP %p\n", frame->ra, frame->gp, frame->sp);
print$(" T0 %p T1 %p T2 %p T3 %p\n", frame->t0, frame->t1, frame->t2, frame->t3);
print$(" T4 %p T5 %p T6 %p A0 %p\n", frame->t4, frame->t5, frame->t6, frame->a0);
print$(" A1 %p A2 %p A3 %p A4 %p\n", frame->a1, frame->a2, frame->a3, frame->a4);
print$(" A5 %p A6 %p A7 %p S0 %p\n", frame->a5, frame->a6, frame->a7, frame->s0);
print$(" S1 %p S2 %p S3 %p S4 %p\n", frame->s1, frame->s2, frame->s3, frame->s4);
print$(" S5 %p S6 %p S7 %p S8 %p\n", frame->s5, frame->s6, frame->s7, frame->s8);
print$(" S9 %p S10 %p S11 %p\n", frame->s9, frame->s10, frame->s11);
print$(" SEPC \x1b[7m%p\x1b[0m\n", user_pc);
print$("\n\x1b[33m--------------------------------------------------------------------------------------------------- \x1b[0;31m!!!\x1b[0m\n\n");
for (;;) {
__asm__ volatile("wfi");
}
}
void exception_handler(Stackframe* frame) {
uint32_t scause = read_csr$(scause);
uint32_t stval = read_csr$(stval);
uint32_t user_pc = read_csr$(sepc);
if (scause & (1 << 31)) {
// NOTE: Interrupt
} else {
panic_handler(frame, scause, stval, user_pc);
}
}

7
src/kernel/hal/rv32/exception.h Normal file
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#pragma once
#include "regs.h"
extern void interrupt_kernel(void);
void exception_handler(Stackframe* frame);

75
src/kernel/hal/rv32/exception.s Normal file
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.align 4
.globl interrupt_kernel
interrupt_kernel:
csrw sscratch, sp
addi sp, sp, -4 * 31
sw ra, 4 * 0(sp)
sw gp, 4 * 1(sp)
sw tp, 4 * 2(sp)
sw t0, 4 * 3(sp)
sw t1, 4 * 4(sp)
sw t2, 4 * 5(sp)
sw t3, 4 * 6(sp)
sw t4, 4 * 7(sp)
sw t5, 4 * 8(sp)
sw t6, 4 * 9(sp)
sw a0, 4 * 10(sp)
sw a1, 4 * 11(sp)
sw a2, 4 * 12(sp)
sw a3, 4 * 13(sp)
sw a4, 4 * 14(sp)
sw a5, 4 * 15(sp)
sw a6, 4 * 16(sp)
sw a7, 4 * 17(sp)
sw s0, 4 * 18(sp)
sw s1, 4 * 19(sp)
sw s2, 4 * 20(sp)
sw s3, 4 * 21(sp)
sw s4, 4 * 22(sp)
sw s5, 4 * 23(sp)
sw s6, 4 * 24(sp)
sw s7, 4 * 25(sp)
sw s8, 4 * 26(sp)
sw s9, 4 * 27(sp)
sw s10, 4 * 28(sp)
sw s11, 4 * 29(sp)
csrr a0, sscratch
sw a0, 4 * 30(sp)
mv a0, sp
call exception_handler
lw ra, 4 * 0(sp)
lw gp, 4 * 1(sp)
lw tp, 4 * 2(sp)
lw t0, 4 * 3(sp)
lw t1, 4 * 4(sp)
lw t2, 4 * 5(sp)
lw t3, 4 * 6(sp)
lw t4, 4 * 7(sp)
lw t5, 4 * 8(sp)
lw t6, 4 * 9(sp)
lw a0, 4 * 10(sp)
lw a1, 4 * 11(sp)
lw a2, 4 * 12(sp)
lw a3, 4 * 13(sp)
lw a4, 4 * 14(sp)
lw a5, 4 * 15(sp)
lw a6, 4 * 16(sp)
lw a7, 4 * 17(sp)
lw s0, 4 * 18(sp)
lw s1, 4 * 19(sp)
lw s2, 4 * 20(sp)
lw s3, 4 * 21(sp)
lw s4, 4 * 22(sp)
lw s5, 4 * 23(sp)
lw s6, 4 * 24(sp)
lw s7, 4 * 25(sp)
lw s8, 4 * 26(sp)
lw s9, 4 * 27(sp)
lw s10, 4 * 28(sp)
lw s11, 4 * 29(sp)
lw sp, 4 * 30(sp)
sret

11
src/kernel/hal/rv32/hal.c Normal file
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#include <hal>
#include "sbi.h"
void hal_putc(int ch) {
sbi_console_putchar(ch);
}
void hal_brkpoint(void) {
__asm__ volatile("ebreak");
}

11
src/kernel/hal/rv32/manifest.json Normal file
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
"type": "lib",
"id": "hal-rv32",
"enableIf": {
"arch": ["riscv32"],
"sys": ["kernel"]
},
"provides": ["hal-impl"],
"requires": ["dtb"]
}

50
src/kernel/hal/rv32/regs.h Normal file
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#pragma once
#include <stdint.h>
typedef struct __attribute__((packed)) {
uint32_t ra;
uint32_t gp;
uint32_t tp;
uint32_t t0;
uint32_t t1;
uint32_t t2;
uint32_t t3;
uint32_t t4;
uint32_t t5;
uint32_t t6;
uint32_t a0;
uint32_t a1;
uint32_t a2;
uint32_t a3;
uint32_t a4;
uint32_t a5;
uint32_t a6;
uint32_t a7;
uint32_t s0;
uint32_t s1;
uint32_t s2;
uint32_t s3;
uint32_t s4;
uint32_t s5;
uint32_t s6;
uint32_t s7;
uint32_t s8;
uint32_t s9;
uint32_t s10;
uint32_t s11;
uint32_t sp;
} Stackframe;
#define read_csr$(reg) \
({ \
unsigned long __tmp; \
__asm__ __volatile__("csrr %0, " #reg : "=r"(__tmp)); \
__tmp; \
})
#define write_csr$(reg, value) \
do { \
uint32_t __tmp = (value); \
__asm__ __volatile__("csrw " #reg ", %0" ::"r"(__tmp)); \
} while (0)

23
src/kernel/hal/rv32/sbi.c Normal file
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#include "sbi.h"
SbiRet __ecall_impl(reg_t eid, reg_t fid, reg_t arg0, reg_t arg1, reg_t arg2, reg_t arg3, reg_t arg4, reg_t arg5) {
register long a0 __asm__("a0") = arg0;
register long a1 __asm__("a1") = arg1;
register long a2 __asm__("a2") = arg2;
register long a3 __asm__("a3") = arg3;
register long a4 __asm__("a4") = arg4;
register long a5 __asm__("a5") = arg5;
register long a6 __asm__("a6") = fid;
register long a7 __asm__("a7") = eid;
__asm__ __volatile__("ecall"
: "=r"(a0), "=r"(a1)
: "r"(a0), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5),
"r"(a6), "r"(a7)
: "memory");
return (SbiRet){.error = a0, .value = a1};
}
long sbi_console_putchar(int ch) {
return ecall(0x01, 0x00, ch).error;
}

35
src/kernel/hal/rv32/sbi.h Normal file
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#pragma once
#include <stdint.h>
typedef intptr_t reg_t;
typedef uintptr_t ureg_t;
enum SbiErrors {
SBI_SUCCESS = 0,
SBI_ERR_FAILED = -1,
SBI_ERR_NOT_SUPPORTED = -2,
SBI_ERR_INVALID_PARAM = -3,
SBI_ERR_DENIED = -4,
SBI_ERR_INVALID_ADDRESS = -5,
SBI_ERR_ALREADY_AVAILABLE = -6,
SBI_ERR_ALREADY_STARTED = -7,
SBI_ERR_ALREADY_STOPPED = -8,
SBI_ERR_NO_SHMEM = -9,
SBI_ERR_INVALID_STATE = -10,
SBI_ERR_BAD_RANGE = -11,
SBI_ERR_TIMEOUT = -12,
SBI_ERR_IO = -13,
SBI_ERR_DENIED_LOCKED = -14,
};
typedef struct {
reg_t error;
reg_t value;
} SbiRet;
#define ecall(...) __ecall(__VA_ARGS__, 0, 0, 0, 0, 0, 0, 0, 0)
#define __ecall(eid, fid, arg0, arg1, arg2, arg3, arg4, arg5, ...) __ecall_impl(eid, fid, arg0, arg1, arg2, arg3, arg4, arg5)
SbiRet __ecall_impl(reg_t eid, reg_t fid, reg_t arg0, reg_t arg1, reg_t arg2, reg_t arg3, reg_t arg4, reg_t arg5);
long sbi_console_putchar(int ch);

8
src/kernel/libs/fmt/manifest.json Normal file
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
"type": "lib",
"id": "fmt",
"requires": [
"io"
]
}

163
src/kernel/libs/fmt/mod.c Normal file
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#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include "mod.h"
static char* strrev(char* str) {
int start;
int end;
char tmp;
end = strlen(str) - 1;
start = 0;
while (start < end) {
tmp = str[start];
str[start] = str[end];
str[end] = tmp;
start++;
end--;
}
return str;
}
static char* itoa(intptr_t value, char* str, int base) {
int i = 0;
bool isNegative = false;
if (value == 0) {
str[i++] = '0';
str[i] = '\0';
return str;
}
if (value < 0 && base == 10) {
isNegative = true;
value = -value;
}
while (value != 0) {
int rem = value % base;
str[i++] = (rem > 9) ? (rem - 10) + 'a' : rem + '0';
value = value / base;
}
if (isNegative) {
str[i++] = '-';
}
str[i] = '\0';
return strrev(str);
}
char* utoa(uintptr_t value, char* str, int base) {
int i = 0;
if (value == 0) {
str[i++] = '0';
str[i] = '\0';
return str;
}
while (value != 0) {
int rem = value % base;
str[i++] = (rem > 9) ? (rem - 10) + 'a' : rem + '0';
value = value / base;
}
str[i] = '\0';
return strrev(str);
}
int fmt(Writer writer, char const* fmt, ...) {
va_list args;
va_start(args, fmt);
int res = vfmt(writer, fmt, args);
va_end(args);
return res;
}
int vfmt(Writer writer, char const* fmt, va_list args) {
char* s = (char*)fmt;
while (*s) {
if (*s == '%') {
switch (*++s) {
case 'd': {
s++;
char buf[100];
int64_t value = va_arg(args, intptr_t);
itoa(value, buf, 10);
writer(strlen(buf), buf);
break;
}
case 'p': {
s++;
char buf[100];
uintptr_t value = va_arg(args, uintptr_t);
utoa(value, buf, 16);
for (size_t i = 0; i < (sizeof(uintptr_t) * 2) - strlen(buf); i++) {
writer(1, "0");
}
writer(strlen(buf), buf);
break;
}
case 'x': {
s++;
char buf[100];
intptr_t value = va_arg(args, uintptr_t);
utoa(value, buf, 16);
writer(strlen(buf), buf);
break;
}
case 's': {
s++;
char* value = va_arg(args, char*);
writer(strlen(value), value);
break;
}
case 'c': {
s++;
char value = va_arg(args, int);
writer(1, &value);
break;
}
case '%': {
s++;
writer(1, "%");
break;
}
case 'z': {
*s = '%';
break;
}
default: {
return -1;
}
}
} else {
char sub[2] = {*s++, '\0'};
writer(1, sub);
}
}
return 0;
}

7
src/kernel/libs/fmt/mod.h Normal file
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#pragma once
#include <io>
#include <stdarg.h>
int fmt(Writer writer, char const* fmt, ...);
int vfmt(Writer writer, char const* fmt, va_list args);

8
src/kernel/libs/io/manifest.json Normal file
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@ -0,0 +1,8 @@
{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
"type": "lib",
"id": "io",
"requires": [
"libc"
]
}

6
src/kernel/libs/io/mod.h Normal file
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#pragma once
#include <stddef.h>
typedef int (*Writer)(size_t n, char const* buf);
typedef int (*Reader)(size_t n, char* buf);

16
src/kernel/libs/libc/manifest.json Normal file
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@ -0,0 +1,16 @@
{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
"type": "lib",
"id": "libc-kernel",
"props": {
"cpp-root-include": true
},
"enableIf": {
"sys": [
"kernel"
]
},
"provides": [
"libc"
]
}

7
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#include "stdlib.h"
#include <hal>
__attribute__((noreturn)) void abort(void) {
hal_brkpoint();
__builtin_unreachable();
}

3
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@ -0,0 +1,3 @@
#pragma once
__attribute__((noreturn)) void abort(void);

50
src/kernel/libs/libc/string.c Normal file
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@ -0,0 +1,50 @@
#include "string.h"
size_t strlen(char const* s) {
size_t i;
for (i = 0; s[i] != '\0'; i++)
;
return i;
}
void* memset(void* s, int c, size_t n) {
if (s == NULL) {
return NULL;
}
char* buf = (char*)s;
for (size_t i = 0; i < n; i++) {
buf[i] = c;
}
return s;
}
int strncmp(char const* s1, char const* s2, size_t n) {
while (*s1 == *s2 && *s1 && n) {
s1++;
s2++;
n--;
}
if (n == 0) {
return 0;
}
return (int)*s1 - (int)*s2;
}
void* memcpy(void* s1, void const* s2, size_t n) {
if (s1 == NULL || s2 == NULL || n < 1) {
return NULL;
}
char* sb1 = (char*)s1;
char const* sb2 = (char const*)s2;
for (size_t i = 0; i < n; i++) {
sb1[i] = sb2[i];
}
return s1;
}

8
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@ -0,0 +1,8 @@
#pragma once
#include <stddef.h>
size_t strlen(char const* s);
void* memset(void* s, int c, size_t n);
int strncmp(char const* s1, char const* s2, size_t n);
void* memcpy(void* s1, void const* s2, size_t n);

9
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
"type": "lib",
"id": "logger",
"requires": [
"fmt",
"helpers"
]
}

22
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#include <fmt>
#include <hal>
#include <stdarg.h>
#include "mod.h"
void _log(LogEvent event, Loc loc, char const* format, ...) {
va_list args;
va_start(args, format);
if (event != LOG_NONE) {
fmt(hal_writer(), "%s%s\x1b[0m %s:%d ", level_colors[event], level_names[event], loc.file, loc.line);
}
vfmt(hal_writer(), format, args);
if (event != LOG_NONE) {
hal_putc('\n');
}
va_end(args);
}

38
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#pragma once
#include <helpers/loc.h>
typedef enum {
LOG_NONE,
LOG_DEBUG,
LOG_INFO,
LOG_WARN,
LOG_ERROR,
LOG_CRIT,
LOG_EVENT_LENGTH
} LogEvent;
#define debug$(...) _log(LOG_DEBUG, loc$(), __VA_ARGS__)
#define info$(...) _log(LOG_INFO, loc$(), __VA_ARGS__)
#define warn$(...) _log(LOG_WARN, loc$(), __VA_ARGS__)
#define error$(...) _log(LOG_ERROR, loc$(), __VA_ARGS__)
#define print$(...) _log(LOG_NONE, (Loc){0}, __VA_ARGS__)
static char const* level_names[LOG_EVENT_LENGTH] = {
[LOG_NONE] = "",
[LOG_DEBUG] = "DEBUG",
[LOG_INFO] = "INFO",
[LOG_WARN] = "WARN",
[LOG_ERROR] = "ERROR",
};
static char const* level_colors[LOG_EVENT_LENGTH] = {
[LOG_NONE] = "",
[LOG_DEBUG] = "\x1b[1;34m",
[LOG_INFO] = "\x1b[1;32m",
[LOG_WARN] = "\x1b[1;33m",
[LOG_ERROR] = "\x1b[1;31m",
};
void _log(LogEvent event, Loc loc, char const* format, ...);

36
src/kernel/libs/runtime/CREDITS.TXT Normal file
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@ -0,0 +1,36 @@
This file is a partial list of people who have contributed to the LLVM/CompilerRT
project. If you have contributed a patch or made some other contribution to
LLVM/CompilerRT, please submit a patch to this file to add yourself, and it will be
done!
The list is sorted by surname and formatted to allow easy grepping and
beautification by scripts. The fields are: name (N), email (E), web-address
(W), PGP key ID and fingerprint (P), description (D), and snail-mail address
(S).
N: Craig van Vliet
E: cvanvliet@auroraux.org
W: http://www.auroraux.org
D: Code style and Readability fixes.
N: Edward O'Callaghan
E: eocallaghan@auroraux.org
W: http://www.auroraux.org
D: CMake'ify Compiler-RT build system
D: Maintain Solaris & AuroraUX ports of Compiler-RT
N: Howard Hinnant
E: hhinnant@apple.com
D: Architect and primary author of compiler-rt
N: Guan-Hong Liu
E: koviankevin@hotmail.com
D: IEEE Quad-precision functions
N: Joerg Sonnenberger
E: joerg@NetBSD.org
D: Maintains NetBSD port.
N: Matt Thomas
E: matt@NetBSD.org
D: ARM improvements.

311
src/kernel/libs/runtime/LICENSE.TXT Normal file
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@ -0,0 +1,311 @@
==============================================================================
The LLVM Project is under the Apache License v2.0 with LLVM Exceptions:
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==============================================================================
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==============================================================================
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Full text of the relevant licenses is included below.
==============================================================================
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Open Source License
Copyright (c) 2009-2019 by the contributors listed in CREDITS.TXT
All rights reserved.
Developed by:
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Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal with
the Software without restriction, including without limitation the rights to
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of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:
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7
src/kernel/libs/runtime/README Normal file
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cc-runtime
==========
cc-runtime is a freestanding, integer-only, easy to integrate subset of LLVM's
compiler-rt libgcc-compatibility functions.
Relevant licenses apply: see license headers in source files and LICENSE.TXT.

4204
src/kernel/libs/runtime/cc-runtime.c Normal file
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File diff suppressed because it is too large Load diff

5
src/kernel/libs/runtime/manifest.json Normal file
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@ -0,0 +1,5 @@
{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
"type": "lib",
"id": "runtime"
}

9
src/libs/dtb/manifest.json Normal file
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
"type": "lib",
"id": "dtb",
"requires": [
"helpers",
"traits"
]
}

152
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#include <helpers/endian.h>
#include <helpers/mem.h>
#include <logger>
#include <stdlib.h>
#include <string.h>
#include "mod.h"
static DTBNode* root = NULL;
static uint32_t read_offset(uint8_t** offset) {
uint32_t value = from_be32(*(uint32_t*)*offset);
*offset += sizeof(uint32_t);
return value;
}
static void dtb_parse(FDTHeader* dtb_header, Allocator* alloc) {
if (dtb_header == NULL) {
error$("Device tree blob not initialized");
abort();
}
char const* strtab = (char const*)((uint8_t*)dtb_header + from_be32(dtb_header->off_dt_strings));
uint8_t* offset = (uint8_t*)dtb_header + from_be32(dtb_header->off_dt_struct);
int found_end = 0;
DTBNode* current_node = NULL;
while (!found_end) {
uint32_t token = read_offset(&offset);
switch (token) {
case FDT_BEGIN_NODE: {
char const* node_name = (char const*)offset;
offset += strlen(node_name) + 1;
offset = (uint8_t*)align_up$((uintptr_t)offset, 4);
if (!root) {
if (*node_name) {
error$("Invalid device tree blob. Expected root node to be empty");
abort();
}
root = alloc->alloc(alloc, sizeof(DTBNode));
if (root == NULL) {
error$("Failed to allocate memory for device tree node");
abort();
}
memset(current_node, 0, sizeof(DTBNode));
root->name[0] = '/';
root->name[1] = '\0';
current_node = root;
} else if (*node_name) {
memcpy(current_node->name, node_name, strlen(node_name));
} else {
memcpy(current_node->name, "<anonymous>", sizeof("<anonymous>"));
}
current_node->children = alloc->alloc(alloc, sizeof(DTBNode));
if (current_node->children == NULL) {
error$("Failed to allocate memory for device tree node");
abort();
}
current_node->children->parent = current_node;
current_node = current_node->children;
break;
}
case FDT_END_NODE: {
current_node = current_node->parent;
current_node->next = alloc->alloc(alloc, sizeof(DTBNode));
if (current_node->next == NULL) {
error$("Failed to allocate memory for device tree node");
abort();
}
memset(current_node->next, 0, sizeof(DTBNode));
current_node->next->parent = current_node->parent;
current_node = current_node->next;
break;
}
case FDT_PROP: {
uint32_t len = read_offset(&offset);
uint32_t nameoff = read_offset(&offset);
DTBProp* prop = alloc->alloc(alloc, sizeof(DTBProp));
if (prop == NULL) {
error$("Failed to allocate memory for device tree property");
abort();
}
char const* prop_name = strtab + nameoff;
prop->len = len;
prop->value = offset;
prop->next = NULL;
memcpy(prop->name, prop_name, strlen(prop_name));
offset += len;
offset = (uint8_t*)align_up$((uintptr_t)offset, 4);
if (current_node->props == NULL) {
current_node->props = prop;
} else {
DTBProp* last_prop = current_node->props;
while (last_prop->next != NULL) {
last_prop = last_prop->next;
}
last_prop->next = prop;
}
break;
}
case FDT_END:
found_end = 1;
break;
case FDT_NOP:
break;
default: {
error$("Unknown token %x", token);
abort();
}
}
}
}
void dtb_init(uintptr_t dtb, Allocator* alloc) {
FDTHeader* dtb_header = (FDTHeader*)dtb;
if (from_be32(dtb_header->magic) != DTB_MAGIC) {
error$("Invalid device tree blob magic number. Excecting %x, got %x", DTB_MAGIC, from_be32(dtb_header->magic));
abort();
}
dtb_parse(dtb_header, alloc);
}
DTBNode* dtb_lookup(char const* name) {
DTBNode* node = root->children;
while (node->next != NULL) {
if (strncmp(name, node->name, strlen(node->name)) == 0) {
return node;
}
}
return NULL;
}

45
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#pragma once
#include <stdint.h>
#include <traits/allocator.h>
#define DTB_MAGIC 0xd00dfeed
#define FDT_BEGIN_NODE 0x1
#define FDT_END_NODE 0x2
#define FDT_PROP 0x3
#define FDT_NOP 0x4
#define FDT_END 0x9
typedef struct __attribute__((packed)) {
uint32_t magic;
uint32_t totalsize;
uint32_t off_dt_struct;
uint32_t off_dt_strings;
uint32_t off_mem_rsvmap;
uint32_t version;
uint32_t last_comp_version;
uint32_t boot_cpuid_phys;
uint32_t size_dt_strings;
uint32_t size_dt_struct;
} FDTHeader;
typedef struct _DTBProp {
char name[64];
uint32_t len;
void* value;
struct _DTBProp* next;
} DTBProp;
typedef struct _DTBNode {
char name[64];
DTBProp* props;
struct _DTBNode* children;
struct _DTBNode* next;
struct _DTBNode* parent;
} DTBNode;
void dtb_init(uintptr_t dtb, Allocator* alloc);
DTBNode* dtb_lookup(char const* name);

41
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#include "bump.h"
#include <helpers/mem.h>
#include <logger>
static void* alloc(void* ctx, size_t len) {
size_t aligned_len = len & 7 ? align_up$(len, 8) : len;
BumpAllocator* self = (BumpAllocator*)ctx;
uint8_t* ptr = self->next;
self->next = (void*)((uint8_t*)self->next + aligned_len);
if ((uintptr_t)self->next > (uintptr_t)self->heap_end) {
return NULL;
}
self->allocations++;
return (void*)ptr;
}
static void free(void* ctx, __attribute__((unused)) void* ptr) {
BumpAllocator* self = (BumpAllocator*)ctx;
self->allocations--;
if (self->allocations == 0) {
self->next = self->heap_start;
}
}
BumpAllocator bump_allocator_create(void* start, size_t len) {
return (BumpAllocator){
.base = {
.alloc = alloc,
.free = free,
.realloc = NULL,
},
.heap_start = start,
.heap_end = (char*)start + len,
.next = start,
.allocations = 0,
};
}

16
src/libs/heap/bump.h Normal file
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#pragma once
#include <stdint.h>
#include <traits/allocator.h>
// TODO: Add locking mechanism to allocation
typedef struct {
Allocator base;
void* heap_start;
void* heap_end;
void* next;
size_t allocations;
} BumpAllocator;
BumpAllocator bump_allocator_create(void* start, size_t len);

5
src/libs/heap/manifest.json Normal file
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
"id": "heap",
"type": "lib"
}

9
src/libs/helpers/endian.c Normal file
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#include "endian.h"
uint32_t from_be32(uint32_t x) {
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
return __builtin_bswap32(x);
#else
return x;
#endif // __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
}

5
src/libs/helpers/endian.h Normal file
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#pragma once
#include <stdint.h>
uint32_t from_be32(uint32_t x);

18
src/libs/helpers/loc.h Normal file
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#pragma once
#include <stddef.h>
typedef struct
{
char const* file;
char const* full;
char const* func;
size_t line;
} Loc;
#define loc$() ((Loc){ \
.file = __FILE_NAME__, \
.full = __FILE__, \
.func = __func__, \
.line = __LINE__, \
})

5
src/libs/helpers/manifest.json Normal file
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
"type": "lib",
"id": "helpers"
}

13
src/libs/helpers/mem.h Normal file
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#pragma once
#define align_up$(x, align) (((x) + (align) - 1) & ~((align) - 1))
#define align_down$(x, align) ((x) & ~((align) - 1))
#define kib$(x) ((uintptr_t)(x) * 1024)
#define mib$(x) (kib$(x) * 1024)
#define gib$(x) (mib$(x) * 1024)
#define pages$(x) (kib$(x * 4))

9
src/libs/traits/allocator.h Normal file
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#pragma once
#include <stddef.h>
typedef struct {
void* (*alloc)(void* ctx, size_t len);
void* (*realloc)(void* ctx, void* ptr, size_t len);
void (*free)(void* ctx, void* ptr);
} Allocator;

5
src/libs/traits/manifest.json Normal file
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{
"$schema": "https://schemas.cute.engineering/stable/cutekit.manifest.component.v1",
"id": "traits",
"type": "lib"
}