2004-12-19 Marco Gerards <metgerards@student.han.nl>
* conf/powerpc-ieee1275.rmk (MOSTLYCLEANFILES): Remove `symlist.c', add `grubof_symlist.c'. (symlist.c): Variable removed. (grubof_HEADERS): Variable added. (grubof_symlist.c): New target. (kernel_syms.lst): Use `grubof_HEADERS' instead of `kernel_img_HEADERS'. (grubof_SOURCES): Add `kern/powerpc/dl.c' and `grubof_symlist.c'. * kern/powerpc/dl.c: New file. * kern/powerpc/ieee1275/init.c (grub_arch_dl_check_header): Function removed. (grub_arch_dl_relocate_symbols): Likewise. (grub_register_exported_symbols): Likewise.
This commit is contained in:
marco_g
parent
4ceb3636de
commit
e4b47e0cd5
5 changed files with 197 additions and 30 deletions
16
ChangeLog
16
ChangeLog
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@ -1,3 +1,19 @@
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2004-12-19 Marco Gerards <metgerards@student.han.nl>
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* conf/powerpc-ieee1275.rmk (MOSTLYCLEANFILES): Remove
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`symlist.c', add `grubof_symlist.c'.
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(symlist.c): Variable removed.
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(grubof_HEADERS): Variable added.
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(grubof_symlist.c): New target.
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(kernel_syms.lst): Use `grubof_HEADERS' instead of
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`kernel_img_HEADERS'.
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(grubof_SOURCES): Add `kern/powerpc/dl.c' and `grubof_symlist.c'.
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* kern/powerpc/dl.c: New file.
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* kern/powerpc/ieee1275/init.c (grub_arch_dl_check_header):
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Function removed.
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(grub_arch_dl_relocate_symbols): Likewise.
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(grub_register_exported_symbols): Likewise.
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2004-12-13 Marco Gerards <metgerards@student.han.nl>
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* fs/ext2.c (grub_ext2_open): Don't use data after freeing it.
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@ -6,13 +6,18 @@ COMMON_CFLAGS = -ffreestanding -msoft-float
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# Images.
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MOSTLYCLEANFILES += symlist.c kernel_syms.lst
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MOSTLYCLEANFILES += grubof_symlist.c kernel_syms.lst
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DEFSYMFILES += kernel_syms.lst
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symlist.c: $(addprefix include/grub/,$(kernel_img_HEADERS)) gensymlist.sh
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grubof_HEADERS = arg.h boot.h device.h disk.h dl.h elf.h env.h err.h \
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file.h fs.h kernel.h misc.h mm.h net.h rescue.h symbol.h \
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term.h types.h machine/biosdisk.h \
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partition.h pc_partition.h machine/time.h machine/ieee1275.h
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grubof_symlist.c: $(addprefix include/grub/,$(grubof_HEADERS)) gensymlist.sh
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sh $(srcdir)/gensymlist.sh $(filter %.h,$^) > $@
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kernel_syms.lst: $(addprefix include/grub/,$(kernel_img_HEADERS)) genkernsyms.sh
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kernel_syms.lst: $(addprefix include/grub/,$(grubof_HEADERS)) genkernsyms.sh
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sh $(srcdir)/genkernsyms.sh $(filter %h,$^) > $@
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# Utilities.
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@ -363,11 +368,11 @@ grubof_SOURCES = boot/powerpc/ieee1275/crt0.S boot/powerpc/ieee1275/cmain.c \
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partmap/apple.c kern/partition.c \
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kern/env.c normal/arg.c loader/powerpc/ieee1275/linux.c \
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loader/powerpc/ieee1275/linux_normal.c commands/boot.c \
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normal/powerpc/setjmp.S
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CLEANFILES += grubof grubof-boot_powerpc_ieee1275_crt0.o grubof-boot_powerpc_ieee1275_cmain.o grubof-boot_powerpc_ieee1275_ieee1275.o grubof-kern_main.o grubof-kern_device.o grubof-kern_disk.o grubof-kern_dl.o grubof-kern_file.o grubof-kern_fs.o grubof-kern_err.o grubof-fs_fshelp.o grubof-kern_misc.o grubof-kern_mm.o grubof-kern_loader.o grubof-kern_rescue.o grubof-kern_term.o grubof-kern_powerpc_ieee1275_init.o grubof-term_powerpc_ieee1275_ofconsole.o grubof-kern_powerpc_ieee1275_openfw.o grubof-fs_ext2.o grubof-fs_ufs.o grubof-fs_minix.o grubof-fs_hfs.o grubof-fs_jfs.o grubof-normal_cmdline.o grubof-normal_command.o grubof-normal_main.o grubof-normal_menu.o grubof-disk_powerpc_ieee1275_ofdisk.o grubof-partmap_amiga.o grubof-partmap_pc.o grubof-partmap_apple.o grubof-kern_partition.o grubof-kern_env.o grubof-normal_arg.o grubof-loader_powerpc_ieee1275_linux.o grubof-loader_powerpc_ieee1275_linux_normal.o grubof-commands_boot.o grubof-normal_powerpc_setjmp.o
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MOSTLYCLEANFILES += grubof-boot_powerpc_ieee1275_crt0.d grubof-boot_powerpc_ieee1275_cmain.d grubof-boot_powerpc_ieee1275_ieee1275.d grubof-kern_main.d grubof-kern_device.d grubof-kern_disk.d grubof-kern_dl.d grubof-kern_file.d grubof-kern_fs.d grubof-kern_err.d grubof-fs_fshelp.d grubof-kern_misc.d grubof-kern_mm.d grubof-kern_loader.d grubof-kern_rescue.d grubof-kern_term.d grubof-kern_powerpc_ieee1275_init.d grubof-term_powerpc_ieee1275_ofconsole.d grubof-kern_powerpc_ieee1275_openfw.d grubof-fs_ext2.d grubof-fs_ufs.d grubof-fs_minix.d grubof-fs_hfs.d grubof-fs_jfs.d grubof-normal_cmdline.d grubof-normal_command.d grubof-normal_main.d grubof-normal_menu.d grubof-disk_powerpc_ieee1275_ofdisk.d grubof-partmap_amiga.d grubof-partmap_pc.d grubof-partmap_apple.d grubof-kern_partition.d grubof-kern_env.d grubof-normal_arg.d grubof-loader_powerpc_ieee1275_linux.d grubof-loader_powerpc_ieee1275_linux_normal.d grubof-commands_boot.d grubof-normal_powerpc_setjmp.d
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normal/powerpc/setjmp.S kern/powerpc/dl.c grubof_symlist.c
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CLEANFILES += grubof grubof-boot_powerpc_ieee1275_crt0.o grubof-boot_powerpc_ieee1275_cmain.o grubof-boot_powerpc_ieee1275_ieee1275.o grubof-kern_main.o grubof-kern_device.o grubof-kern_disk.o grubof-kern_dl.o grubof-kern_file.o grubof-kern_fs.o grubof-kern_err.o grubof-fs_fshelp.o grubof-kern_misc.o grubof-kern_mm.o grubof-kern_loader.o grubof-kern_rescue.o grubof-kern_term.o grubof-kern_powerpc_ieee1275_init.o grubof-term_powerpc_ieee1275_ofconsole.o grubof-kern_powerpc_ieee1275_openfw.o grubof-fs_ext2.o grubof-fs_ufs.o grubof-fs_minix.o grubof-fs_hfs.o grubof-fs_jfs.o grubof-normal_cmdline.o grubof-normal_command.o grubof-normal_main.o grubof-normal_menu.o grubof-disk_powerpc_ieee1275_ofdisk.o grubof-partmap_amiga.o grubof-partmap_pc.o grubof-partmap_apple.o grubof-kern_partition.o grubof-kern_env.o grubof-normal_arg.o grubof-loader_powerpc_ieee1275_linux.o grubof-loader_powerpc_ieee1275_linux_normal.o grubof-commands_boot.o grubof-normal_powerpc_setjmp.o grubof-kern_powerpc_dl.o grubof-grubof_symlist.o
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MOSTLYCLEANFILES += grubof-boot_powerpc_ieee1275_crt0.d grubof-boot_powerpc_ieee1275_cmain.d grubof-boot_powerpc_ieee1275_ieee1275.d grubof-kern_main.d grubof-kern_device.d grubof-kern_disk.d grubof-kern_dl.d grubof-kern_file.d grubof-kern_fs.d grubof-kern_err.d grubof-fs_fshelp.d grubof-kern_misc.d grubof-kern_mm.d grubof-kern_loader.d grubof-kern_rescue.d grubof-kern_term.d grubof-kern_powerpc_ieee1275_init.d grubof-term_powerpc_ieee1275_ofconsole.d grubof-kern_powerpc_ieee1275_openfw.d grubof-fs_ext2.d grubof-fs_ufs.d grubof-fs_minix.d grubof-fs_hfs.d grubof-fs_jfs.d grubof-normal_cmdline.d grubof-normal_command.d grubof-normal_main.d grubof-normal_menu.d grubof-disk_powerpc_ieee1275_ofdisk.d grubof-partmap_amiga.d grubof-partmap_pc.d grubof-partmap_apple.d grubof-kern_partition.d grubof-kern_env.d grubof-normal_arg.d grubof-loader_powerpc_ieee1275_linux.d grubof-loader_powerpc_ieee1275_linux_normal.d grubof-commands_boot.d grubof-normal_powerpc_setjmp.d grubof-kern_powerpc_dl.d grubof-grubof_symlist.d
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grubof: grubof-boot_powerpc_ieee1275_crt0.o grubof-boot_powerpc_ieee1275_cmain.o grubof-boot_powerpc_ieee1275_ieee1275.o grubof-kern_main.o grubof-kern_device.o grubof-kern_disk.o grubof-kern_dl.o grubof-kern_file.o grubof-kern_fs.o grubof-kern_err.o grubof-fs_fshelp.o grubof-kern_misc.o grubof-kern_mm.o grubof-kern_loader.o grubof-kern_rescue.o grubof-kern_term.o grubof-kern_powerpc_ieee1275_init.o grubof-term_powerpc_ieee1275_ofconsole.o grubof-kern_powerpc_ieee1275_openfw.o grubof-fs_ext2.o grubof-fs_ufs.o grubof-fs_minix.o grubof-fs_hfs.o grubof-fs_jfs.o grubof-normal_cmdline.o grubof-normal_command.o grubof-normal_main.o grubof-normal_menu.o grubof-disk_powerpc_ieee1275_ofdisk.o grubof-partmap_amiga.o grubof-partmap_pc.o grubof-partmap_apple.o grubof-kern_partition.o grubof-kern_env.o grubof-normal_arg.o grubof-loader_powerpc_ieee1275_linux.o grubof-loader_powerpc_ieee1275_linux_normal.o grubof-commands_boot.o grubof-normal_powerpc_setjmp.o
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grubof: grubof-boot_powerpc_ieee1275_crt0.o grubof-boot_powerpc_ieee1275_cmain.o grubof-boot_powerpc_ieee1275_ieee1275.o grubof-kern_main.o grubof-kern_device.o grubof-kern_disk.o grubof-kern_dl.o grubof-kern_file.o grubof-kern_fs.o grubof-kern_err.o grubof-fs_fshelp.o grubof-kern_misc.o grubof-kern_mm.o grubof-kern_loader.o grubof-kern_rescue.o grubof-kern_term.o grubof-kern_powerpc_ieee1275_init.o grubof-term_powerpc_ieee1275_ofconsole.o grubof-kern_powerpc_ieee1275_openfw.o grubof-fs_ext2.o grubof-fs_ufs.o grubof-fs_minix.o grubof-fs_hfs.o grubof-fs_jfs.o grubof-normal_cmdline.o grubof-normal_command.o grubof-normal_main.o grubof-normal_menu.o grubof-disk_powerpc_ieee1275_ofdisk.o grubof-partmap_amiga.o grubof-partmap_pc.o grubof-partmap_apple.o grubof-kern_partition.o grubof-kern_env.o grubof-normal_arg.o grubof-loader_powerpc_ieee1275_linux.o grubof-loader_powerpc_ieee1275_linux_normal.o grubof-commands_boot.o grubof-normal_powerpc_setjmp.o grubof-kern_powerpc_dl.o grubof-grubof_symlist.o
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$(BUILD_CC) -o $@ $^ $(BUILD_LDFLAGS) $(grubof_LDFLAGS)
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grubof-boot_powerpc_ieee1275_crt0.o: boot/powerpc/ieee1275/crt0.S
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@ -682,6 +687,22 @@ grubof-normal_powerpc_setjmp.d: normal/powerpc/setjmp.S
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-include grubof-normal_powerpc_setjmp.d
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grubof-kern_powerpc_dl.o: kern/powerpc/dl.c
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$(BUILD_CC) -Ikern/powerpc -I$(srcdir)/kern/powerpc $(BUILD_CPPFLAGS) $(BUILD_CFLAGS) -DGRUB_UTIL=1 $(grubof_CFLAGS) -c -o $@ $<
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grubof-kern_powerpc_dl.d: kern/powerpc/dl.c
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set -e; $(BUILD_CC) -Ikern/powerpc -I$(srcdir)/kern/powerpc $(BUILD_CPPFLAGS) $(BUILD_CFLAGS) -DGRUB_UTIL=1 $(grubof_CFLAGS) -M $< | sed 's,dl\.o[ :]*,grubof-kern_powerpc_dl.o $@ : ,g' > $@; [ -s $@ ] || rm -f $@
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-include grubof-kern_powerpc_dl.d
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grubof-grubof_symlist.o: grubof_symlist.c
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$(BUILD_CC) -I. -I$(srcdir)/. $(BUILD_CPPFLAGS) $(BUILD_CFLAGS) -DGRUB_UTIL=1 $(grubof_CFLAGS) -c -o $@ $<
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grubof-grubof_symlist.d: grubof_symlist.c
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set -e; $(BUILD_CC) -I. -I$(srcdir)/. $(BUILD_CPPFLAGS) $(BUILD_CFLAGS) -DGRUB_UTIL=1 $(grubof_CFLAGS) -M $< | sed 's,grubof_symlist\.o[ :]*,grubof-grubof_symlist.o $@ : ,g' > $@; [ -s $@ ] || rm -f $@
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-include grubof-grubof_symlist.d
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grubof_HEADERS = grub/powerpc/ieee1275/ieee1275.h
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grubof_CFLAGS = $(COMMON_CFLAGS) -DGRUBOF
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grubof_ASFLAGS = $(COMMON_ASFLAGS)
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@ -6,13 +6,18 @@ COMMON_CFLAGS = -ffreestanding -msoft-float
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# Images.
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MOSTLYCLEANFILES += symlist.c kernel_syms.lst
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MOSTLYCLEANFILES += grubof_symlist.c kernel_syms.lst
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DEFSYMFILES += kernel_syms.lst
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symlist.c: $(addprefix include/grub/,$(kernel_img_HEADERS)) gensymlist.sh
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grubof_HEADERS = arg.h boot.h device.h disk.h dl.h elf.h env.h err.h \
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file.h fs.h kernel.h misc.h mm.h net.h rescue.h symbol.h \
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term.h types.h machine/biosdisk.h \
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partition.h pc_partition.h machine/time.h machine/ieee1275.h
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grubof_symlist.c: $(addprefix include/grub/,$(grubof_HEADERS)) gensymlist.sh
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sh $(srcdir)/gensymlist.sh $(filter %.h,$^) > $@
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kernel_syms.lst: $(addprefix include/grub/,$(kernel_img_HEADERS)) genkernsyms.sh
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kernel_syms.lst: $(addprefix include/grub/,$(grubof_HEADERS)) genkernsyms.sh
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sh $(srcdir)/genkernsyms.sh $(filter %h,$^) > $@
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# Utilities.
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@ -45,7 +50,7 @@ grubof_SOURCES = boot/powerpc/ieee1275/crt0.S boot/powerpc/ieee1275/cmain.c \
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partmap/apple.c kern/partition.c \
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kern/env.c normal/arg.c loader/powerpc/ieee1275/linux.c \
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loader/powerpc/ieee1275/linux_normal.c commands/boot.c \
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normal/powerpc/setjmp.S
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normal/powerpc/setjmp.S kern/powerpc/dl.c grubof_symlist.c
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grubof_HEADERS = grub/powerpc/ieee1275/ieee1275.h
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grubof_CFLAGS = $(COMMON_CFLAGS) -DGRUBOF
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grubof_ASFLAGS = $(COMMON_ASFLAGS)
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144
kern/powerpc/dl.c
Normal file
144
kern/powerpc/dl.c
Normal file
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@ -0,0 +1,144 @@
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/* dl.c - arch-dependent part of loadable module support */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2002, 2004 Free Software Foundation, Inc.
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*
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* GRUB is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <grub/dl.h>
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#include <grub/elf.h>
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#include <grub/misc.h>
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#include <grub/err.h>
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/* Check if EHDR is a valid ELF header. */
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int
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grub_arch_dl_check_header (void *ehdr, unsigned size)
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{
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Elf32_Ehdr *e = ehdr;
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/* Check the header size. */
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if (size < sizeof (Elf32_Ehdr))
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return 0;
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/* Check the magic numbers. */
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if (!((e->e_ident[EI_MAG0] == ELFMAG0)
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&& (e->e_ident[EI_MAG1] == ELFMAG1)
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&& (e->e_ident[EI_MAG2] == ELFMAG2)
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&& (e->e_ident[EI_MAG3] == ELFMAG3)
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&& (e->e_ident[EI_CLASS] == ELFCLASS32)
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&& (e->e_ident[EI_DATA] == ELFDATA2MSB)
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&& (e->e_ident[EI_VERSION] == EV_CURRENT)
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&& (e->e_type == ET_REL) && (e->e_machine == EM_PPC)
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&& (e->e_version == EV_CURRENT)))
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return 0;
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/* Make sure that every section is within the core. */
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if (size < e->e_shoff + e->e_shentsize * e->e_shnum)
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return 0;
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return 1;
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}
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/* Relocate symbols. */
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grub_err_t
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grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr)
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{
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Elf32_Ehdr *e = ehdr;
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Elf32_Shdr *s;
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Elf32_Sym *symtab;
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Elf32_Word entsize;
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unsigned i;
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/* Find a symbol table. */
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for (i = 0, s = (Elf32_Shdr *) ((char *) e + e->e_shoff);
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i < e->e_shnum;
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i++, s = (Elf32_Shdr *) ((char *) s + e->e_shentsize))
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if (s->sh_type == SHT_SYMTAB)
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break;
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if (i == e->e_shnum)
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return grub_error (GRUB_ERR_BAD_MODULE, "no symtab found");
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symtab = (Elf32_Sym *) ((char *) e + s->sh_offset);
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entsize = s->sh_entsize;
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for (i = 0, s = (Elf32_Shdr *) ((char *) e + e->e_shoff);
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i < e->e_shnum;
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i++, s = (Elf32_Shdr *) ((char *) s + e->e_shentsize))
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if (s->sh_type == SHT_RELA)
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{
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grub_dl_segment_t seg;
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/* Find the target segment. */
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for (seg = mod->segment; seg; seg = seg->next)
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if (seg->section == s->sh_info)
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break;
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if (seg)
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{
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Elf32_Rela *rel, *max;
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for (rel = (Elf32_Rela *) ((char *) e + s->sh_offset),
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max = rel + s->sh_size / s->sh_entsize;
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rel < max;
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rel++)
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{
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Elf32_Word *addr;
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Elf32_Sym *sym;
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grub_uint32_t value;
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if (seg->size < rel->r_offset)
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return grub_error (GRUB_ERR_BAD_MODULE,
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"reloc offset is out of the segment");
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addr = (Elf32_Word *) ((char *) seg->addr + rel->r_offset);
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sym = (Elf32_Sym *) ((char *) symtab
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+ entsize * ELF32_R_SYM (rel->r_info));
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/* On the PPC the value does not have an explicit
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addend, add it. */
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value = sym->st_value + rel->r_addend;
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switch (ELF32_R_TYPE (rel->r_info))
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{
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case R_PPC_ADDR16_LO:
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*(Elf32_Half *) addr = value;
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break;
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case R_PPC_REL24:
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{
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Elf32_Sword delta = value - (Elf32_Word) addr;
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if (delta << 6 >> 6 != delta)
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return grub_error (GRUB_ERR_BAD_MODULE, "Relocation overflow");
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*addr = (*addr & 0xfc000003) | (delta & 0x3fffffc);
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break;
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}
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case R_PPC_ADDR16_HA:
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||||
*(Elf32_Half *) addr = (value + 0x8000) >> 16;
|
||||
break;
|
||||
|
||||
case R_PPC_ADDR32:
|
||||
*addr = value;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return GRUB_ERR_NONE;
|
||||
}
|
||||
|
|
@ -84,31 +84,12 @@ grub_machine_init (void)
|
|||
grub_ofdisk_init ();
|
||||
}
|
||||
|
||||
int
|
||||
grub_arch_dl_check_header (void *ehdr __attribute ((unused)),
|
||||
grub_size_t size __attribute ((unused)))
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
grub_err_t
|
||||
grub_arch_dl_relocate_symbols (grub_dl_t mod __attribute ((unused)),
|
||||
void *ehdr __attribute ((unused)))
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
grub_stop (void)
|
||||
{
|
||||
for (;;);
|
||||
}
|
||||
|
||||
void
|
||||
grub_register_exported_symbols (void)
|
||||
{
|
||||
}
|
||||
|
||||
grub_uint32_t
|
||||
grub_get_rtc (void)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in a new issue