c25ba1fccd
- PS/2 keyboard driver: IRQ1 handler, scancode set 1 translation, ring buffer, shift key support - SYS_READ (fd=0): non-blocking keyboard read for stdin - SYS_YIELD: calls schedule_tick directly (no nested INT 0x80) - SYS_EXEC: loads binary from CPIO initrd, replaces process image - User-space libc: crt0.S (C runtime startup), syscalls.h (inline syscall wrappers, basic string functions) - Shell app (sh): readline with echo/backspace, builtins (cd, env, help, exit), fork+exec for external commands - Updated build_apps.sh: C app support with crt0 linking, libc include path, .bss section in objcopy Tested: shell boots, keyboard input works, hello-world runs via fork+exec, env shows CWD, exit cleanly terminates.
69 lines
2.0 KiB
Bash
Executable File
69 lines
2.0 KiB
Bash
Executable File
#!/bin/sh
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# Build all user-mode applications as flat binaries.
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# Usage: build_apps.sh <apps_dir> <output_dir>
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# Each app directory in <apps_dir>/ gets compiled and its flat binary
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# is placed in <output_dir>/.
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set -e
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APPS_DIR="$1"
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OUTPUT_DIR="$2"
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LINKER_SCRIPT="$APPS_DIR/user.ld"
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CC="${CC:-clang}"
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OBJCOPY="${OBJCOPY:-objcopy}"
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CFLAGS="-ffreestanding -m32 -fno-pie -fno-pic -fno-builtin -fno-stack-protector -mno-sse -mno-mmx -O2 -Wall -I$APPS_DIR/libc"
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LDFLAGS="-m32 -nostdlib -no-pie -Wl,--no-dynamic-linker"
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mkdir -p "$OUTPUT_DIR"
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# Build crt0 if it exists
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CRT0_OBJ=""
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if [ -f "$APPS_DIR/libc/crt0.S" ]; then
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CRT0_OBJ="$OUTPUT_DIR/_crt0.o"
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$CC $CFLAGS -c "$APPS_DIR/libc/crt0.S" -o "$CRT0_OBJ"
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fi
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for app_dir in "$APPS_DIR"/*/; do
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[ -d "$app_dir" ] || continue
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app_name=$(basename "$app_dir")
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# Skip the libc directory (shared library, not an app)
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[ "$app_name" = "libc" ] && continue
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echo "Building app: $app_name"
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# Collect source files
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OBJ_FILES=""
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for src in "$app_dir"*.S "$app_dir"*.c; do
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[ -f "$src" ] || continue
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obj="$OUTPUT_DIR/${app_name}_$(basename "${src%.*}").o"
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$CC $CFLAGS -c "$src" -o "$obj"
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OBJ_FILES="$OBJ_FILES $obj"
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done
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if [ -z "$OBJ_FILES" ]; then
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echo " No sources found, skipping"
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continue
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fi
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# Link into ELF (include crt0 if app has .c files and doesn't have its own _start)
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elf="$OUTPUT_DIR/$app_name.elf"
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HAS_C_FILES=""
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for src in "$app_dir"*.c; do
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[ -f "$src" ] && HAS_C_FILES="yes"
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done
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if [ -n "$HAS_C_FILES" ] && [ -n "$CRT0_OBJ" ]; then
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$CC $LDFLAGS -T "$LINKER_SCRIPT" "$CRT0_OBJ" $OBJ_FILES -o "$elf"
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else
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$CC $LDFLAGS -T "$LINKER_SCRIPT" $OBJ_FILES -o "$elf"
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fi
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# Convert to flat binary (include .bss for zero-initialized data)
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bin="$OUTPUT_DIR/$app_name"
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$OBJCOPY -O binary --only-section=.text --only-section=.rodata --only-section=.data --only-section=.bss "$elf" "$bin"
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size=$(wc -c < "$bin")
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echo " Built: $bin ($size bytes)"
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done
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