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 2004-12-19 20:35:06 +00:00
parent 4ceb3636de
commit e4b47e0cd5
5 changed files with 197 additions and 30 deletions

View file

@ -1,3 +1,19 @@
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.
2004-12-13 Marco Gerards <metgerards@student.han.nl> 2004-12-13 Marco Gerards <metgerards@student.han.nl>
* fs/ext2.c (grub_ext2_open): Don't use data after freeing it. * fs/ext2.c (grub_ext2_open): Don't use data after freeing it.

View file

@ -6,13 +6,18 @@ COMMON_CFLAGS = -ffreestanding -msoft-float
# Images. # Images.
MOSTLYCLEANFILES += symlist.c kernel_syms.lst MOSTLYCLEANFILES += grubof_symlist.c kernel_syms.lst
DEFSYMFILES += kernel_syms.lst DEFSYMFILES += kernel_syms.lst
symlist.c: $(addprefix include/grub/,$(kernel_img_HEADERS)) gensymlist.sh grubof_HEADERS = arg.h boot.h device.h disk.h dl.h elf.h env.h err.h \
file.h fs.h kernel.h misc.h mm.h net.h rescue.h symbol.h \
term.h types.h machine/biosdisk.h \
partition.h pc_partition.h machine/time.h machine/ieee1275.h
grubof_symlist.c: $(addprefix include/grub/,$(grubof_HEADERS)) gensymlist.sh
sh $(srcdir)/gensymlist.sh $(filter %.h,$^) > $@ sh $(srcdir)/gensymlist.sh $(filter %.h,$^) > $@
kernel_syms.lst: $(addprefix include/grub/,$(kernel_img_HEADERS)) genkernsyms.sh kernel_syms.lst: $(addprefix include/grub/,$(grubof_HEADERS)) genkernsyms.sh
sh $(srcdir)/genkernsyms.sh $(filter %h,$^) > $@ sh $(srcdir)/genkernsyms.sh $(filter %h,$^) > $@
# Utilities. # Utilities.
@ -363,11 +368,11 @@ grubof_SOURCES = boot/powerpc/ieee1275/crt0.S boot/powerpc/ieee1275/cmain.c \
partmap/apple.c kern/partition.c \ partmap/apple.c kern/partition.c \
kern/env.c normal/arg.c loader/powerpc/ieee1275/linux.c \ kern/env.c normal/arg.c loader/powerpc/ieee1275/linux.c \
loader/powerpc/ieee1275/linux_normal.c commands/boot.c \ loader/powerpc/ieee1275/linux_normal.c commands/boot.c \
normal/powerpc/setjmp.S normal/powerpc/setjmp.S kern/powerpc/dl.c grubof_symlist.c
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 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
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 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
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: 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
$(BUILD_CC) -o $@ $^ $(BUILD_LDFLAGS) $(grubof_LDFLAGS) $(BUILD_CC) -o $@ $^ $(BUILD_LDFLAGS) $(grubof_LDFLAGS)
grubof-boot_powerpc_ieee1275_crt0.o: boot/powerpc/ieee1275/crt0.S grubof-boot_powerpc_ieee1275_crt0.o: boot/powerpc/ieee1275/crt0.S
@ -682,6 +687,22 @@ grubof-normal_powerpc_setjmp.d: normal/powerpc/setjmp.S
-include grubof-normal_powerpc_setjmp.d -include grubof-normal_powerpc_setjmp.d
grubof-kern_powerpc_dl.o: kern/powerpc/dl.c
$(BUILD_CC) -Ikern/powerpc -I$(srcdir)/kern/powerpc $(BUILD_CPPFLAGS) $(BUILD_CFLAGS) -DGRUB_UTIL=1 $(grubof_CFLAGS) -c -o $@ $<
grubof-kern_powerpc_dl.d: kern/powerpc/dl.c
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 $@
-include grubof-kern_powerpc_dl.d
grubof-grubof_symlist.o: grubof_symlist.c
$(BUILD_CC) -I. -I$(srcdir)/. $(BUILD_CPPFLAGS) $(BUILD_CFLAGS) -DGRUB_UTIL=1 $(grubof_CFLAGS) -c -o $@ $<
grubof-grubof_symlist.d: grubof_symlist.c
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 $@
-include grubof-grubof_symlist.d
grubof_HEADERS = grub/powerpc/ieee1275/ieee1275.h grubof_HEADERS = grub/powerpc/ieee1275/ieee1275.h
grubof_CFLAGS = $(COMMON_CFLAGS) -DGRUBOF grubof_CFLAGS = $(COMMON_CFLAGS) -DGRUBOF
grubof_ASFLAGS = $(COMMON_ASFLAGS) grubof_ASFLAGS = $(COMMON_ASFLAGS)

View file

@ -6,13 +6,18 @@ COMMON_CFLAGS = -ffreestanding -msoft-float
# Images. # Images.
MOSTLYCLEANFILES += symlist.c kernel_syms.lst MOSTLYCLEANFILES += grubof_symlist.c kernel_syms.lst
DEFSYMFILES += kernel_syms.lst DEFSYMFILES += kernel_syms.lst
symlist.c: $(addprefix include/grub/,$(kernel_img_HEADERS)) gensymlist.sh grubof_HEADERS = arg.h boot.h device.h disk.h dl.h elf.h env.h err.h \
file.h fs.h kernel.h misc.h mm.h net.h rescue.h symbol.h \
term.h types.h machine/biosdisk.h \
partition.h pc_partition.h machine/time.h machine/ieee1275.h
grubof_symlist.c: $(addprefix include/grub/,$(grubof_HEADERS)) gensymlist.sh
sh $(srcdir)/gensymlist.sh $(filter %.h,$^) > $@ sh $(srcdir)/gensymlist.sh $(filter %.h,$^) > $@
kernel_syms.lst: $(addprefix include/grub/,$(kernel_img_HEADERS)) genkernsyms.sh kernel_syms.lst: $(addprefix include/grub/,$(grubof_HEADERS)) genkernsyms.sh
sh $(srcdir)/genkernsyms.sh $(filter %h,$^) > $@ sh $(srcdir)/genkernsyms.sh $(filter %h,$^) > $@
# Utilities. # Utilities.
@ -45,7 +50,7 @@ grubof_SOURCES = boot/powerpc/ieee1275/crt0.S boot/powerpc/ieee1275/cmain.c \
partmap/apple.c kern/partition.c \ partmap/apple.c kern/partition.c \
kern/env.c normal/arg.c loader/powerpc/ieee1275/linux.c \ kern/env.c normal/arg.c loader/powerpc/ieee1275/linux.c \
loader/powerpc/ieee1275/linux_normal.c commands/boot.c \ loader/powerpc/ieee1275/linux_normal.c commands/boot.c \
normal/powerpc/setjmp.S normal/powerpc/setjmp.S kern/powerpc/dl.c grubof_symlist.c
grubof_HEADERS = grub/powerpc/ieee1275/ieee1275.h grubof_HEADERS = grub/powerpc/ieee1275/ieee1275.h
grubof_CFLAGS = $(COMMON_CFLAGS) -DGRUBOF grubof_CFLAGS = $(COMMON_CFLAGS) -DGRUBOF
grubof_ASFLAGS = $(COMMON_ASFLAGS) grubof_ASFLAGS = $(COMMON_ASFLAGS)

144
kern/powerpc/dl.c Normal file
View file

@ -0,0 +1,144 @@
/* dl.c - arch-dependent part of loadable module support */
/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2002, 2004 Free Software Foundation, Inc.
*
* GRUB is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <grub/dl.h>
#include <grub/elf.h>
#include <grub/misc.h>
#include <grub/err.h>
/* Check if EHDR is a valid ELF header. */
int
grub_arch_dl_check_header (void *ehdr, unsigned size)
{
Elf32_Ehdr *e = ehdr;
/* Check the header size. */
if (size < sizeof (Elf32_Ehdr))
return 0;
/* Check the magic numbers. */
if (!((e->e_ident[EI_MAG0] == ELFMAG0)
&& (e->e_ident[EI_MAG1] == ELFMAG1)
&& (e->e_ident[EI_MAG2] == ELFMAG2)
&& (e->e_ident[EI_MAG3] == ELFMAG3)
&& (e->e_ident[EI_CLASS] == ELFCLASS32)
&& (e->e_ident[EI_DATA] == ELFDATA2MSB)
&& (e->e_ident[EI_VERSION] == EV_CURRENT)
&& (e->e_type == ET_REL) && (e->e_machine == EM_PPC)
&& (e->e_version == EV_CURRENT)))
return 0;
/* Make sure that every section is within the core. */
if (size < e->e_shoff + e->e_shentsize * e->e_shnum)
return 0;
return 1;
}
/* Relocate symbols. */
grub_err_t
grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr)
{
Elf32_Ehdr *e = ehdr;
Elf32_Shdr *s;
Elf32_Sym *symtab;
Elf32_Word entsize;
unsigned i;
/* Find a symbol table. */
for (i = 0, s = (Elf32_Shdr *) ((char *) e + e->e_shoff);
i < e->e_shnum;
i++, s = (Elf32_Shdr *) ((char *) s + e->e_shentsize))
if (s->sh_type == SHT_SYMTAB)
break;
if (i == e->e_shnum)
return grub_error (GRUB_ERR_BAD_MODULE, "no symtab found");
symtab = (Elf32_Sym *) ((char *) e + s->sh_offset);
entsize = s->sh_entsize;
for (i = 0, s = (Elf32_Shdr *) ((char *) e + e->e_shoff);
i < e->e_shnum;
i++, s = (Elf32_Shdr *) ((char *) s + e->e_shentsize))
if (s->sh_type == SHT_RELA)
{
grub_dl_segment_t seg;
/* Find the target segment. */
for (seg = mod->segment; seg; seg = seg->next)
if (seg->section == s->sh_info)
break;
if (seg)
{
Elf32_Rela *rel, *max;
for (rel = (Elf32_Rela *) ((char *) e + s->sh_offset),
max = rel + s->sh_size / s->sh_entsize;
rel < max;
rel++)
{
Elf32_Word *addr;
Elf32_Sym *sym;
grub_uint32_t value;
if (seg->size < rel->r_offset)
return grub_error (GRUB_ERR_BAD_MODULE,
"reloc offset is out of the segment");
addr = (Elf32_Word *) ((char *) seg->addr + rel->r_offset);
sym = (Elf32_Sym *) ((char *) symtab
+ entsize * ELF32_R_SYM (rel->r_info));
/* On the PPC the value does not have an explicit
addend, add it. */
value = sym->st_value + rel->r_addend;
switch (ELF32_R_TYPE (rel->r_info))
{
case R_PPC_ADDR16_LO:
*(Elf32_Half *) addr = value;
break;
case R_PPC_REL24:
{
Elf32_Sword delta = value - (Elf32_Word) addr;
if (delta << 6 >> 6 != delta)
return grub_error (GRUB_ERR_BAD_MODULE, "Relocation overflow");
*addr = (*addr & 0xfc000003) | (delta & 0x3fffffc);
break;
}
case R_PPC_ADDR16_HA:
*(Elf32_Half *) addr = (value + 0x8000) >> 16;
break;
case R_PPC_ADDR32:
*addr = value;
break;
}
}
}
}
return GRUB_ERR_NONE;
}

View file

@ -84,31 +84,12 @@ grub_machine_init (void)
grub_ofdisk_init (); 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 void
grub_stop (void) grub_stop (void)
{ {
for (;;); for (;;);
} }
void
grub_register_exported_symbols (void)
{
}
grub_uint32_t grub_uint32_t
grub_get_rtc (void) grub_get_rtc (void)
{ {