62ddcc8f79
Use -mrtd and -mregparm=3 to reduce the generated code sizes. This means that any missing prototypes could be fatal. Also, you must take care when writing assembly code. See the comments at the beginning of startup.S, for more details. * kern/i386/pc/startup.S (pupa_halt): Modified for the new compilation mechanism. (pupa_chainloader_real_boot): Likewise. (pupa_biosdisk_rw_int13_extensions): Likewise. (pupa_biosdisk_rw_standard): Likewise. (pupa_biosdisk_check_int13_extensions): Likewise. (pupa_biosdisk_get_diskinfo_int13_extensions): Likewise. (pupa_biosdisk_get_diskinfo_standard): Likewise. (pupa_get_memsize): Likewise. (pupa_get_mmap_entry): Likewise. (pupa_console_putchar): Likewise. (pupa_console_setcursor): Likewise. (pupa_getrtsecs): Use pushl instead of push. * kern/i386/pc/init.c (pupa_machine_init): Use the scratch memory instead of the stack for a mmap entry, because some BIOSes may ignore the maximum size and overflow. * conf/i386-pc.rmk (COMMON_CFLAGS): Added -mrtd and -mregparm=3. * genmk.rb (PModule#rule): Compile automatically generated sources with module-specific CFLAGS as well as other sources.
65 lines
2 KiB
Makefile
65 lines
2 KiB
Makefile
# -*- makefile -*-
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COMMON_ASFLAGS = -nostdinc -fno-builtin
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COMMON_CFLAGS = -fno-builtin -mrtd -mregparm=3
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# Images.
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pkgdata_IMAGES = boot.img diskboot.img kernel.img
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# For boot.img.
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boot_img_SOURCES = boot/i386/pc/boot.S
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boot_img_ASFLAGS = $(COMMON_ASFLAGS)
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boot_img_LDFLAGS = -nostdlib -Wl,-N,-Ttext,7C00
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# For diskboot.img.
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diskboot_img_SOURCES = boot/i386/pc/diskboot.S
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diskboot_img_ASFLAGS = $(COMMON_ASFLAGS)
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diskboot_img_LDFLAGS = -nostdlib -Wl,-N,-Ttext,8000
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# For kernel.img.
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kernel_img_SOURCES = kern/i386/pc/startup.S kern/main.c kern/device.c \
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kern/disk.c kern/dl.c kern/file.c kern/fs.c kern/err.c \
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kern/misc.c kern/mm.c kern/loader.c kern/rescue.c kern/term.c \
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kern/i386/dl.c kern/i386/pc/init.c disk/i386/pc/partition.c \
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disk/i386/pc/biosdisk.c \
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term/i386/pc/console.c \
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symlist.c
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kernel_img_HEADERS = boot.h device.h disk.h dl.h elf.h err.h \
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file.h fs.h kernel.h loader.h misc.h mm.h net.h rescue.h symbol.h \
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term.h types.h machine/biosdisk.h machine/boot.h \
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machine/console.h machine/init.h machine/memory.h \
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machine/loader.h machine/partition.h
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kernel_img_CFLAGS = $(COMMON_CFLAGS)
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kernel_img_ASFLAGS = $(COMMON_ASFLAGS)
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kernel_img_LDFLAGS = -nostdlib -Wl,-N,-Ttext,8200
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MOSTLYCLEANFILES += symlist.c kernel_syms.lst
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DEFSYMFILES += kernel_syms.lst
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symlist.c: $(addprefix include/pupa/,$(kernel_img_HEADERS)) gensymlist.sh
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sh $(srcdir)/gensymlist.sh $(filter %.h,$^) > $@
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kernel_syms.lst: $(addprefix include/pupa/,$(kernel_img_HEADERS)) genkernsyms.sh
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sh $(srcdir)/genkernsyms.sh $(filter %h,$^) > $@
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# Utilities.
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bin_UTILITIES = pupa-mkimage
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noinst_UTILITIES = genmoddep
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# For pupa-mkimage.
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pupa_mkimage_SOURCES = util/i386/pc/pupa-mkimage.c util/misc.c \
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util/resolve.c
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# For genmoddep.
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genmoddep_SOURCES = util/genmoddep.c
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# Modules.
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pkgdata_MODULES = chain.mod fat.mod
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# For chain.mod.
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chain_mod_SOURCES = loader/i386/pc/chainloader.c
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chain_mod_CFLAGS = $(COMMON_CFLAGS)
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# For fat.mod.
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fat_mod_SOURCES = fs/fat.c
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fat_mod_CFLAGS = $(COMMON_CFLAGS)
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