diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/libc/.gitignore | 1 | ||||
| -rw-r--r-- | lib/libc/Makefile | 28 | ||||
| -rw-r--r-- | lib/libc/include/bits/types.h | 64 | ||||
| -rw-r--r-- | lib/libc/include/stddef.h | 45 | ||||
| -rw-r--r-- | lib/libc/include/stdint.h | 61 | ||||
| -rw-r--r-- | lib/libc/src/arch/amd64/crt0.S | 45 | ||||
| -rw-r--r-- | lib/libc/src/main.c | 39 |
7 files changed, 283 insertions, 0 deletions
diff --git a/lib/libc/.gitignore b/lib/libc/.gitignore new file mode 100644 index 0000000..8dbdcdc --- /dev/null +++ b/lib/libc/.gitignore @@ -0,0 +1 @@ +include/sys/ diff --git a/lib/libc/Makefile b/lib/libc/Makefile new file mode 100644 index 0000000..af91a87 --- /dev/null +++ b/lib/libc/Makefile @@ -0,0 +1,28 @@ +CFLAGS = -c -fno-stack-protector -nostdlib -static -Iinclude/ +LIBC_CFILES = $(shell find src/ -name "*.c") +LIBC_ASMFILES = $(shell find src/ -name "*.S") + +LIBC_OBJ = $(LIBC_CFILES:.c=.o) +LIBC_ASMOBJ = $(LIBC_ASMFILES:.S=.S.o) + +all: $(LIBC_ASMOBJ) $(LIBC_OBJ) build/libc.a + +build/libc.a: build/ + mkdir -p include/sys/ + cp -f $(USRDIR)/include/sys/*.h include/sys + ar rcs build/libc.a $(LIBC_OBJ) $(LIBC_ASMOBJ) + +%.o: %.c + $(CC) $(CFLAGS) -Iinclude/ $< -o $@ + +%.S.o: %.S + $(CC) $(CFLAGS) -Iinclude/ $< -o $@ + +.PHONY: +build/: + mkdir -p build/ + +.PHONY: clean +clean: + rm -f $(LIBC_OBJ) $(LIBC_ASMOBJ) + rm -rf build/ diff --git a/lib/libc/include/bits/types.h b/lib/libc/include/bits/types.h new file mode 100644 index 0000000..6d319e8 --- /dev/null +++ b/lib/libc/include/bits/types.h @@ -0,0 +1,64 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _BITS_TYPES_H +#define _BITS_TYPES_H + +/* Fixed width integer types */ +typedef unsigned long __size_t; +typedef long __ssize_t; +typedef long __ptrdiff_t; + +typedef unsigned char __uint8_t; +typedef unsigned short __uint16_t; +typedef unsigned int __uint32_t; +typedef unsigned long long __uint64_t; + +typedef signed char __int8_t; +typedef short __int16_t; +typedef int __int32_t; +typedef long long __int64_t; + +/* Fixed width integer type limits */ +#define __INT8_MIN (-0x7F - 1) +#define __INT16_MIN (-0x7FFF - 1) +#define __INT32_MIN (-0x7FFFFFFF - 1) +#define __INT64_MIN (-0x7FFFFFFFFFFFFFFFLL - 1) + +#define __INT8_MAX 0x7F +#define __INT16_MAX 0x7FFF +#define __INT32_MAX 0x7FFFFFFF +#define __INT64_MAX 0x7FFFFFFFFFFFFFFFLL + +#define __UINT8_MAX 0xFF +#define __UINT16_MAX 0xFFFF +#define __UINT32_MAX 0xFFFFFFFFU +#define __UINT64_MAX 0xFFFFFFFFFFFFFFFFULL + +#endif /* !_BITS_TYPES_H */ diff --git a/lib/libc/include/stddef.h b/lib/libc/include/stddef.h new file mode 100644 index 0000000..09566f4 --- /dev/null +++ b/lib/libc/include/stddef.h @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _STDDEF_H +#define _STDDEF_H + +#include <bits/types.h> + +#if __cplusplus >= 201103L +#define NULL nullptr +#elif defined(__cplusplus) +#define NULL 0L +#else +#define NULL ((void *) 0) +#endif + +typedef __size_t size_t; + +#endif /* !_STDDEF_H */ diff --git a/lib/libc/include/stdint.h b/lib/libc/include/stdint.h new file mode 100644 index 0000000..5f61b18 --- /dev/null +++ b/lib/libc/include/stdint.h @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _STDINT_H +#define _STDINT_H + +#include <bits/types.h> + +typedef __uint8_t uint8_t; +typedef __uint16_t uint16_t; +typedef __uint32_t uint32_t; +typedef __uint64_t uint64_t; +typedef __size_t uintptr_t; + +typedef __int8_t int8_t; +typedef __int16_t int16_t; +typedef __int32_t int32_t; +typedef __int64_t int64_t; + +#define INT8_MIN __INT8_MIN +#define INT16_MIN __INT16_MIN +#define INT32_MIN __INT32_MIN +#define INT64_MIN __INT64_MIN + +#define INT8_MAX __INT8_MAX +#define INT16_MAX __INT16_MAX +#define INT32_MAX __INT32_MAX +#define INT64_MAX __INT64_MAX + +#define UINT8_MAX __UINT8_MAX +#define UINT16_MAX __UINT16_MAX +#define UINT32_MAX __UINT32_MAX +#define UINT64_MAX __UINT64_MAX + +#endif /* !_STDINT_H */ diff --git a/lib/libc/src/arch/amd64/crt0.S b/lib/libc/src/arch/amd64/crt0.S new file mode 100644 index 0000000..9dc0cbf --- /dev/null +++ b/lib/libc/src/arch/amd64/crt0.S @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/syscall.h> + +.text +.globl _start +_start: + // Mark end of callstack + xor %rbp, %rbp + + // Load context and jump to the entry + lea (%rsp), %rdi + call __libc_entry + + // Exit returning status + mov $1, %rax + int $0x80 + ud2 diff --git a/lib/libc/src/main.c b/lib/libc/src/main.c new file mode 100644 index 0000000..798d667 --- /dev/null +++ b/lib/libc/src/main.c @@ -0,0 +1,39 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#include <stdint.h> +#include <stddef.h> + +int main(int argc, char **argv); + +int +__libc_entry(uint64_t *ctx) +{ + return main(0, NULL); +} |