From 4eed9b3128b31a4583a7f94f6574cd87bcf505ff Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Sat, 13 Sep 2025 18:57:35 -0400
Subject: build: 'i386' -> 'amd64'

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 src/sys/arch/amd64/Makefile    |  33 ++++++++++++++++++++++++++++++++
 src/sys/arch/amd64/amd64       | Bin 0 -> 13576 bytes
 src/sys/arch/amd64/conf/sys.ld |  35 ++++++++++++++++++++++++++++++++++
 src/sys/arch/amd64/locore.S    |  42 +++++++++++++++++++++++++++++++++++++++++
 4 files changed, 110 insertions(+)
 create mode 100644 src/sys/arch/amd64/Makefile
 create mode 100755 src/sys/arch/amd64/amd64
 create mode 100644 src/sys/arch/amd64/conf/sys.ld
 create mode 100644 src/sys/arch/amd64/locore.S

(limited to 'src/sys/arch/amd64')

diff --git a/src/sys/arch/amd64/Makefile b/src/sys/arch/amd64/Makefile
new file mode 100644
index 0000000..f4f4f48
--- /dev/null
+++ b/src/sys/arch/amd64/Makefile
@@ -0,0 +1,33 @@
+include ../../conf/sys.mk
+
+override PROMPT := printf "%s\t\t%s\n"
+
+TARGET_BIN = ../../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 -L../../target -lkern
+
+.PHONY: all
+all: $(OBJECTS) $(ASMOBJECTS)
+	$(LD) $(OBJECTS) $(ASMOBJECTS) -o $(TARGET_BIN) $(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/amd64/amd64 b/src/sys/arch/amd64/amd64
new file mode 100755
index 0000000..de0e4ea
Binary files /dev/null and b/src/sys/arch/amd64/amd64 differ
diff --git a/src/sys/arch/amd64/conf/sys.ld b/src/sys/arch/amd64/conf/sys.ld
new file mode 100644
index 0000000..b5d1cf0
--- /dev/null
+++ b/src/sys/arch/amd64/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/amd64/locore.S b/src/sys/arch/amd64/locore.S
new file mode 100644
index 0000000..5f7c3df
--- /dev/null
+++ b/src/sys/arch/amd64/locore.S
@@ -0,0 +1,42 @@
+    .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:
+
+fbtag_start:
+    .word 5                         // Type
+    .word 1                         // Flags
+    .long fbtag_end - fbtag_start   // Length
+    .long 800                       // Width
+    .long 600                       // Height
+    .long 32                        // Depth
+fbtag_end:
+
+    .align 8
+endtag:
+    .word 0
+    .word 0
+    .word 8
+
+    .text
+    .code32
+    .globl _start
+_start:
+    cli
+    mov stack_bottom, %esp
+    push %ebx
+    push %eax
+    jmp main
+
+    .section .bss
+stack_bottom:
+    .fill 4096 * 16, 0
-- 
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