initial sources

Signed-off-by: Ian Moffett <ian@osmora.org>

10 files changed, 380 insertions, 51 deletions

diff --git a/src/Makefile b/src/Makefile
index ea6c7aa..f3232f3 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,20 +1,34 @@
 TARGET = x86_64
+KBIN = sys/l5
 SHIMDIR = shim
 SHIMBIN = BOOTX64.EFI
 SYSROOT = root
 OMAR = tools/omar/bin/omar
 ISO = lunos.iso
 
+# Build tools
+BINUTILS_DIR := $(shell pwd)/cc/toolchain/build-binutils
+CC := $(shell pwd)/cc/gcc/bin/x86_64-pc-ethos-gcc
+LD := $(BINUTILS_DIR)/bin/x86_64-pc-ethos-ld
+AS := $(BINUTILS_DIR)/bin/x86_64-pc-ethos-as
+
 # QEMU emulator flags
 QEMU_FLAGS = --enable-kvm -serial stdio -cdrom $(ISO) \
 			-M q35 -cpu host -smp 4 -m 2G
 
 .PHONY: all
-all: root image
+all: root sys image
+
+.PHONY: sys
+sys:
+	cd sys/; make CC=$(CC) AS=$(AS) LD=$(LD)
+	cp $(KBIN) root/boot/
 
 root:
-	mkdir -p root/
-	mkdir -p root/boot/
+	mkdir -p $(SYSROOT)/
+	mkdir -p $(SYSROOT)/boot/
+	mkdir -p $(SYSROOT)/usr/include/
+	cp -vr sys/include/sys/* $(SYSROOT)/usr/include/
 
 .PHONY: sysroot
 image:
@@ -35,4 +49,6 @@ run:
 
 .PHONY: clean
 clean:
-	rm -f lunos.iso
+	rm -rf lunos.iso root
+	rm -f $(KBIN)
+	cd sys/; make clean
diff --git a/src/arch/i386/conf/e0.ld b/src/arch/i386/conf/e0.ld
deleted file mode 100644
index 5b7c7fc..0000000
--- a/src/arch/i386/conf/e0.ld
+++ /dev/null
@@ -1,46 +0,0 @@
-OUTPUT_FORMAT(elf64-x86-64)
-OUTPUT_ARCH(i386:x86-64)
-ENTRY(__bsp_entry)
-
-PHDRS
-{
-    text          PT_LOAD    FLAGS((1 << 0) | (1 << 2)) ;
-    rodata        PT_LOAD    FLAGS((1 << 2)) ;
-    data          PT_LOAD    FLAGS((1 << 1) | (1 << 2)) ;
-}
-
-SECTIONS
-{
-    . = 0xFFFFFFFF80000000;
-
-    .text : {
-        *(.text .text.*)
-    } :text
-
-    . += CONSTANT(MAXPAGESIZE);
-
-    .rodata : {
-        *(.rodata .rodata.*)
-    } :rodata
-
-    . += CONSTANT(MAXPAGESIZE);
-
-    .data : {
-        *(.data)
-    } :data
-
-    .bss : {
-        *(COMMON)
-        *(.bss .bss.*)
-    } :data
-
-    . = ALIGN(64);
-    .data.cacheline_aligned : {
-        *(.data.cacheline_aligned)
-    }
-
-    /DISCARD/ : {
-        *(.eh_frame .eh_frame.*)
-        *(.note .note.*)
-    }
-}
diff --git a/src/data/boot/limine.conf b/src/data/boot/limine.conf
index 6d33d8a..ed29e4b 100644
--- a/src/data/boot/limine.conf
+++ b/src/data/boot/limine.conf
@@ -7,5 +7,5 @@ resolution: 1280x720
 
 /e0
     protocol: multiboot2
-    kernel_path: boot():/boot/e0
+    kernel_path: boot():/boot/l5
     module_path: boot():/boot/initrd.omar
diff --git a/src/sys/Makefile b/src/sys/Makefile
new file mode 100644
index 0000000..52e4e20
--- /dev/null
+++ b/src/sys/Makefile
@@ -0,0 +1,17 @@
+include conf/sys.mk
+
+TARGETDIR = arch/$(TARGET)
+CC =
+LD =
+AS =
+
+.PHONY: all
+all: md
+
+.PHONY: md
+md:
+	cd $(TARGETDIR); make CC=$(CC) LD=$(LD) AS=$(AS)
+
+.PHONY: clean
+clean:
+	cd $(TARGETDIR); make clean
diff --git a/src/sys/arch/i386/Makefile b/src/sys/arch/i386/Makefile
new file mode 100644
index 0000000..2db5f9a
--- /dev/null
+++ b/src/sys/arch/i386/Makefile
@@ -0,0 +1,34 @@
+include ../../conf/sys.mk
+
+.SILENT:
+override PROMPT := printf "%s\t\t%s\n"
+
+TARGET = ../../l5
+TARGET_INC = -I../../target/header/
+CFLAGS = -I../../include/ -I../../include/lib/ $(TARGET_INC) $(MI_CFLAGS) $(MD_CFLAGS)
+CFILES = $(shell find . -name "*.c")
+
+ASMFILES = $(shell find . -name "*.S")
+ASMOBJECTS = $(ASMFILES:.S=.S.o)
+
+DEPS = $(CFILES:.c=.d)
+ASMDEPS = $(ASMFILES:.S=.S.d)
+OBJECTS = $(CFILES:%.c=%.o)
+LD_FLAGS = -Tconf/sys.ld
+
+.PHONY: all
+all: $(OBJECTS) $(ASMOBJECTS)
+	$(LD) $(OBJECTS) $(ASMOBJECTS) -o $(TARGET) $(LD_FLAGS)
+
+-include $(DEPS)
+%.o: %.c
+	$(CC) -c $(CFLAGS) $< -o $@
+
+-include $(ASMDEPS)
+%.S.o: %.S
+	$(PROMPT) " MD.AS " $<
+	$(CC) -c $< -o $@ $(CFLAGS) $(MD_CFLAGS)
+
+.PHONY: clean
+clean:
+	rm -f $(DEPS) $(ASMDEPS) $(OBJECTS) $(ASMOBJECTS)
diff --git a/src/sys/arch/i386/conf/sys.ld b/src/sys/arch/i386/conf/sys.ld
new file mode 100644
index 0000000..b5d1cf0
--- /dev/null
+++ b/src/sys/arch/i386/conf/sys.ld
@@ -0,0 +1,35 @@
+ENTRY(_start)
+
+SECTIONS {
+    . = 1M;
+
+    .boot :
+    {
+        *(.multiboot_header)
+    }
+
+    . = ALIGN(4K);
+    .text :
+    {
+        *(.text .text.*)
+    }
+
+    . = ALIGN(4K);
+    .rodata :
+    {
+        *(.rodata .rodata.*)
+    }
+
+    . = ALIGN(4K);
+    .data :
+    {
+        *(.data .data.*)
+    }
+
+    . = ALIGN(4K);
+    .bss :
+    {
+        *(.bss .bss.*)
+    }
+}
+
diff --git a/src/sys/arch/i386/locore.S b/src/sys/arch/i386/locore.S
new file mode 100644
index 0000000..5cbdbc2
--- /dev/null
+++ b/src/sys/arch/i386/locore.S
@@ -0,0 +1,19 @@
+    .set MAGIC, 0xe85250d6
+    .set ARCH,  0x00            // i386, protected mode
+    .set LEN, hdr_end - hdr_start
+    .set CHECKSUM, 0x100000000 - (0xe85250d6 + 0 + (hdr_end - hdr_start))
+
+    .section .multiboot
+    .align 4
+hdr_start:
+    .long MAGIC
+    .long ARCH
+    .long LEN
+    .long CHECKSUM
+hdr_end:
+
+    .text
+    .code32
+    .globl _start
+_start:
+    jmp .
diff --git a/src/sys/conf/sys.mk b/src/sys/conf/sys.mk
new file mode 100644
index 0000000..357303a
--- /dev/null
+++ b/src/sys/conf/sys.mk
@@ -0,0 +1,15 @@
+TARGET = i386  # default
+LDSCRIPT = ../md/$(TARGET)/conf/sys.ld   # default
+
+# TODO: Make less rigid
+override MD_CFLAGS = -mno-80387 -mno-mmx -mno-3dnow \
+	-mno-sse -mno-sse2 -mno-red-zone -mcmodel=kernel
+
+override MI_CFLAGS = -fexceptions --std=gnu11 -ffreestanding -fno-stack-protector -fno-pic \
+	-Werror=implicit -Werror=implicit-function-declaration \
+	-Werror=implicit-int -Werror=int-conversion \
+    -Werror=missing-prototypes                   \
+	-Werror=incompatible-pointer-types -Werror=int-to-pointer-cast \
+	-Werror=return-type -mno-red-zone -mcmodel=kernel \
+	-D_KERNEL -Wno-pointer-sign -MMD -nostdinc \
+    -Wno-format-pedantic -Wno-attributes $(MD_CFLAGS)
diff --git a/src/sys/include/sys/cdefs.h b/src/sys/include/sys/cdefs.h
new file mode 100644
index 0000000..91c542e
--- /dev/null
+++ b/src/sys/include/sys/cdefs.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2025 Ian Marco Moffett and Ethos0 engineers
+ * 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 the project 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 _SYS_CDEFS_H_
+#define _SYS_CDEFS_H_ 1
+
+#include <sys/param.h>
+
+#define __ASMV          __asm__ __volatile__
+#if defined(_KERNEL)
+#define __isr           __attribute__((__interrupt__))
+#endif  /* _KERNEL */
+#define __weak          __attribute__((__weak__))
+#define __strong        __attribute__((__strong__))
+#define __always_inline __attribute__((__always_inline__))
+#define __packed        __attribute__((__packed__))
+#define __dead          __attribute__((__noreturn__))
+#define __cold          __attribute__((__cold__))
+#define __dead_cold     __attribute__((__noreturn__, __cold__))
+#define __aligned(n)    __attribute__((__aligned__((n))))
+#define __unused        __attribute__((__unused__))
+#define __used          __attribute__((__used__))
+#define __nothing       ((void)0)
+#define __likely(exp)   __builtin_expect(((exp) != 0), 1)
+#define __unlikely(exp) __builtin_expect(((exp) != 0), 0)
+#define __static_assert _Static_assert
+#define __barrier()     __ASMV("" ::: "memory")
+
+#if defined(__cplusplus)
+#define __BEGIN_DECLS   extern "C" {
+#define __END_DECLS     }
+#else
+#define __BEGIN_DECLS
+#define __END_DECLS
+#endif
+
+#ifndef __offsetof
+#define __offsetof(st, m) ((size_t)&(((st *)0)->m))
+#endif  /* __offsetof */
+
+#if defined(_KERNEL) || defined(_E0_SOURCE)
+#define offsetof(st, m) __offsetof((st), (m))
+#endif /* _KERNEL || _E0_SOURCE */
+
+/*
+ *  Align data on a cache line boundary. This is
+ *  mostly useful for certain locks to ensure they
+ *  have their own cache line to reduce cache line
+ *  bouncing.
+ */
+#ifndef __cacheline_aligned
+#define __cacheline_aligned                             \
+    __attribute__((__aligned__(COHERENCY_UNIT),         \
+                __section__(".data.cacheline_aligned")))
+
+#endif  /* __cacheline_aligned */
+#endif  /* _KERNEL */
diff --git a/src/sys/include/sys/errno.h b/src/sys/include/sys/errno.h
new file mode 100644
index 0000000..84d7c83
--- /dev/null
+++ b/src/sys/include/sys/errno.h
@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2025 Ian Marco Moffett and Ethos0 engineers
+ * 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 the project 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 _ERRNO_H_
+#define _ERRNO_H_
+
+#define	EPERM 1		/* Not super-user */
+#define	ENOENT 2	/* No such file or directory */
+#define	ESRCH 3		/* No such process */
+#define	EINTR 4		/* Interrupted system call */
+#define	EIO 5		/* I/O error */
+#define	ENXIO 6		/* No such device or address */
+#define	E2BIG 7		/* Arg list too long */
+#define	ENOEXEC 8	/* Exec format error */
+#define	EBADF 9		/* Bad file number */
+#define	ECHILD 10	/* No children */
+#define	EAGAIN 11	/* No more processes */
+#define	ENOMEM 12	/* Not enough core */
+#define	EACCES 13	/* Permission denied */
+#define	EFAULT 14	/* Bad address */
+#define	ENOTBLK 15	/* Block device required */
+#define	EBUSY 16	/* Mount device busy */
+#define	EEXIST 17	/* File exists */
+#define	EXDEV 18	/* Cross-device link */
+#define	ENODEV 19	/* No such device */
+#define	ENOTDIR 20	/* Not a directory */
+#define	EISDIR 21	/* Is a directory */
+#define	EINVAL 22	/* Invalid argument */
+#define	ENFILE 23	/* Too many open files in system */
+#define	EMFILE 24	/* Too many open files */
+#define	ENOTTY 25	/* Not a typewriter */
+#define	ETXTBSY 26	/* Text file busy */
+#define	EFBIG 27	/* File too large */
+#define	ENOSPC 28	/* No space left on device */
+#define	ESPIPE 29	/* Illegal seek */
+#define	EROFS 30	/* Read only file system */
+#define	EMLINK 31	/* Too many links */
+#define	EPIPE 32	/* Broken pipe */
+#define	EDOM 33		/* Math arg out of domain of func */
+#define	ERANGE 34	/* Math result not representable */
+#define	ENOMSG 35	/* No message of desired type */
+#define	EIDRM 36	/* Identifier removed */
+#define	ECHRNG 37	/* Channel number out of range */
+#define	EL2NSYNC 38	/* Level 2 not synchronized */
+#define	EL3HLT 39	/* Level 3 halted */
+#define	EL3RST 40	/* Level 3 reset */
+#define	ELNRNG 41	/* Link number out of range */
+#define	EUNATCH 42	/* Protocol driver not attached */
+#define	ENOCSI 43	/* No CSI structure available */
+#define	EL2HLT 44	/* Level 2 halted */
+#define	EDEADLK 45	/* Deadlock condition */
+#define	ENOLCK 46	/* No record locks available */
+#define EBADE 50	/* Invalid exchange */
+#define EBADR 51	/* Invalid request descriptor */
+#define EXFULL 52	/* Exchange full */
+#define ENOANO 53	/* No anode */
+#define EBADRQC 54	/* Invalid request code */
+#define EBADSLT 55	/* Invalid slot */
+#define EDEADLOCK 56	/* File locking deadlock error */
+#define EBFONT 57	/* Bad font file fmt */
+#define ENOSTR 60	/* Device not a stream */
+#define ENODATA 61	/* No data (for no delay io) */
+#define ETIME 62	/* Timer expired */
+#define ENOSR 63	/* Out of streams resources */
+#define ENONET 64	/* Machine is not on the network */
+#define ENOPKG 65	/* Package not installed */
+#define EREMOTE 66	/* The object is remote */
+#define ENOLINK 67	/* The link has been severed */
+#define EADV 68		/* Advertise error */
+#define ESRMNT 69	/* Srmount error */
+#define	ECOMM 70	/* Communication error on send */
+#define EPROTO 71	/* Protocol error */
+#define	EMULTIHOP 74	/* Multihop attempted */
+#define	ELBIN 75	/* Inode is remote (not really error) */
+#define	EDOTDOT 76	/* Cross mount point (not really error) */
+#define EBADMSG 77	/* Trying to read unreadable message */
+#define EFTYPE 79	/* Inappropriate file type or format */
+#define ENOTUNIQ 80	/* Given log. name not unique */
+#define EBADFD 81	/* f.d. invalid for this operation */
+#define EREMCHG 82	/* Remote address changed */
+#define ELIBACC 83	/* Can't access a needed shared lib */
+#define ELIBBAD 84	/* Accessing a corrupted shared lib */
+#define ELIBSCN 85	/* .lib section in a.out corrupted */
+#define ELIBMAX 86	/* Attempting to link in too many libs */
+#define ELIBEXEC 87	/* Attempting to exec a shared library */
+#define ENOSYS 88	/* Function not implemented */
+#define ENMFILE 89      /* No more files */
+#define ENOTEMPTY 90	/* Directory not empty */
+#define ENAMETOOLONG 91	/* File or path name too long */
+#define ELOOP 92	/* Too many symbolic links */
+#define EOPNOTSUPP 95	/* Operation not supported on transport endpoint */
+#define EPFNOSUPPORT 96 /* Protocol family not supported */
+#define ECONNRESET 104  /* Connection reset by peer */
+#define ENOBUFS 105	/* No buffer space available */
+#define EAFNOSUPPORT 106 /* Address family not supported by protocol family */
+#define EPROTOTYPE 107	/* Protocol wrong type for socket */
+#define ENOTSOCK 108	/* Socket operation on non-socket */
+#define ENOPROTOOPT 109	/* Protocol not available */
+#define ESHUTDOWN 110	/* Can't send after socket shutdown */
+#define ECONNREFUSED 111	/* Connection refused */
+#define EADDRINUSE 112		/* Address already in use */
+#define ECONNABORTED 113	/* Connection aborted */
+#define ENETUNREACH 114		/* Network is unreachable */
+#define ENETDOWN 115		/* Network interface is not configured */
+#define ETIMEDOUT 116		/* Connection timed out */
+#define EHOSTDOWN 117		/* Host is down */
+#define EHOSTUNREACH 118	/* Host is unreachable */
+#define EINPROGRESS 119		/* Connection already in progress */
+#define EALREADY 120		/* Socket already connected */
+#define EDESTADDRREQ 121	/* Destination address required */
+#define EMSGSIZE 122		/* Message too long */
+#define EPROTONOSUPPORT 123	/* Unknown protocol */
+#define ESOCKTNOSUPPORT 124	/* Socket type not supported */
+#define EADDRNOTAVAIL 125	/* Address not available */
+#define ENETRESET 126
+#define EISCONN 127		/* Socket is already connected */
+#define ENOTCONN 128		/* Socket is not connected */
+#define ETOOMANYREFS 129
+#define EPROCLIM 130
+#define EUSERS 131
+#define EDQUOT 132
+#define ESTALE 133
+#define ENOTSUP 134		/* Not supported */
+#define ENOMEDIUM 135   /* No medium (in tape drive) */
+#define ENOSHARE 136    /* No such host or network path */
+#define ECASECLASH 137  /* Filename exists with different case */
+#define EILSEQ 138
+#define EOVERFLOW 139	/* Value too large for defined data type */
+
+#endif  /* !_ERRNO_H_ */