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-rw-r--r--Makefile1
-rw-r--r--src/arch/i386/Kconfig3
-rw-r--r--src/arch/i386/Makefile.bigbootblock.inc35
-rw-r--r--src/arch/i386/Makefile.inc40
-rw-r--r--src/arch/i386/Makefile.tinybootblock.inc87
-rw-r--r--src/arch/i386/init/bootblock.c24
-rw-r--r--src/arch/i386/init/bootblock_prologue.c37
-rw-r--r--src/arch/i386/lib/walkcbfs.S94
-rw-r--r--src/cpu/x86/32bit/entry32.lds1
-rw-r--r--src/mainboard/emulation/qemu-x86/Kconfig1
-rw-r--r--src/mainboard/emulation/qemu-x86/Makefile.inc6
-rw-r--r--util/cbfstool/cbfs-mkstage.c17
12 files changed, 306 insertions, 40 deletions
diff --git a/Makefile b/Makefile
index 8216146deb..3b964b81f8 100644
--- a/Makefile
+++ b/Makefile
@@ -293,6 +293,7 @@ doxygen-clean:
clean: doxygen-clean
rm -f $(allobjs) $(obj)/coreboot*
+ rm -rf $(obj)/bootblock* $(obj)/romstage* $(obj)/location.*
rm -f $(obj)/option_table.* $(obj)/crt0_includes.h $(obj)/ldscript
rm -f $(obj)/mainboard/$(MAINBOARDDIR)/static.c $(obj)/mainboard/$(MAINBOARDDIR)/config.py $(obj)/mainboard/$(MAINBOARDDIR)/static.dot
rm -f $(obj)/mainboard/$(MAINBOARDDIR)/auto.inc $(obj)/mainboard/$(MAINBOARDDIR)/crt0.s $(obj)/mainboard/$(MAINBOARDDIR)/crt0.disasm
diff --git a/src/arch/i386/Kconfig b/src/arch/i386/Kconfig
index c2f023f2b1..19bd63a0d4 100644
--- a/src/arch/i386/Kconfig
+++ b/src/arch/i386/Kconfig
@@ -40,3 +40,6 @@ config MAX_REBOOT_CNT
int
default 3
+config TINY_BOOTBLOCK
+ bool
+ default n
diff --git a/src/arch/i386/Makefile.bigbootblock.inc b/src/arch/i386/Makefile.bigbootblock.inc
new file mode 100644
index 0000000000..06af5d2b64
--- /dev/null
+++ b/src/arch/i386/Makefile.bigbootblock.inc
@@ -0,0 +1,35 @@
+ifdef POST_EVALUATION
+
+#######################################################################
+# Build the final rom image
+
+$(obj)/coreboot.pre: $(obj)/coreboot.bootblock $(CBFSTOOL)
+ rm -f $@
+ $(CBFSTOOL) $@ create $(CONFIG_COREBOOT_ROMSIZE_KB)K $(obj)/coreboot.bootblock
+
+#######################################################################
+# Build the bootblock
+
+$(obj)/coreboot.bootblock: $(obj)/coreboot
+ @printf " OBJCOPY $(subst $(obj)/,,$(@))\n"
+ $(OBJCOPY) -O binary $< $@
+
+$(obj)/ldscript.ld: $(ldscripts) $(obj)/ldoptions
+ printf 'INCLUDE "ldoptions"\n' > $@
+ printf '$(foreach ldscript,$(ldscripts),INCLUDE "$(ldscript:$(obj)/%=%)"\n)' >> $@
+
+$(obj)/crt0_includes.h: $(crt0s)
+ printf '$(foreach crt0,config.h $(crt0s),#include "$(crt0:$(obj)/%=%)"\n)' > $@
+
+$(obj)/mainboard/$(MAINBOARDDIR)/crt0.o: $(obj)/mainboard/$(MAINBOARDDIR)/crt0.s
+ $(CC) -I$(obj) -Wa,-acdlns -c -o $@ $< > $(dir $@)/crt0.disasm
+
+$(obj)/mainboard/$(MAINBOARDDIR)/crt0.s: $(src)/arch/i386/init/crt0.S.lb $(obj)/crt0_includes.h
+ $(CC) -x assembler-with-cpp -DASSEMBLY -E -I$(src)/include -I$(src)/arch/i386/include -I$(obj) -include $(obj)/config.h -I. -I$(src) $< > $@.new && mv $@.new $@
+
+$(obj)/coreboot: $(initobjs) $(obj)/ldscript.ld
+ @printf " LINK $(subst $(obj)/,,$(@))\n"
+ $(CC) -nostdlib -nostartfiles -static -o $@ -L$(obj) -T $(obj)/ldscript.ld $(initobjs)
+ $(NM) -n $(obj)/coreboot | sort > $(obj)/coreboot.map
+
+endif
diff --git a/src/arch/i386/Makefile.inc b/src/arch/i386/Makefile.inc
index e2f464d285..ef4b90af0c 100644
--- a/src/arch/i386/Makefile.inc
+++ b/src/arch/i386/Makefile.inc
@@ -11,10 +11,8 @@ ifdef POST_EVALUATION
#######################################################################
# Build the final rom image
-
-$(obj)/coreboot.rom: $(obj)/coreboot.bootblock $(obj)/coreboot_ram $(CBFSTOOL)
- rm -f $@
- $(CBFSTOOL) $@ create $(CONFIG_COREBOOT_ROMSIZE_KB)K $(obj)/coreboot.bootblock
+$(obj)/coreboot.rom: $(obj)/coreboot.pre $(obj)/coreboot_ram $(CBFSTOOL)
+ cp $(obj)/coreboot.pre $@
if [ -f fallback/coreboot_apc ]; \
then \
$(CBFSTOOL) $@ add-stage fallback/coreboot_apc fallback/coreboot_apc $(CBFS_COMPRESS_FLAG); \
@@ -33,36 +31,10 @@ endif
@printf " CBFSPRINT $(subst $(obj)/,,$(@))\n\n"
$(CBFSTOOL) $(obj)/coreboot.rom print
-
-#######################################################################
-# Build the bootblock
-
-$(obj)/coreboot.bootblock: $(obj)/coreboot
- @printf " OBJCOPY $(subst $(obj)/,,$(@))\n"
- $(OBJCOPY) -O binary $< $@
-
-$(obj)/ldscript.ld: $(ldscripts) $(obj)/ldoptions
- printf 'INCLUDE "ldoptions"\n' > $@
- printf '$(foreach ldscript,$(ldscripts),INCLUDE "$(ldscript:$(obj)/%=%)"\n)' >> $@
-
-$(obj)/crt0_includes.h: $(crt0s)
- printf '$(foreach crt0,config.h $(crt0s),#include "$(crt0:$(obj)/%=%)"\n)' > $@
-
-$(obj)/mainboard/$(MAINBOARDDIR)/crt0.o: $(obj)/mainboard/$(MAINBOARDDIR)/crt0.s
- $(CC) -I$(obj) -Wa,-acdlns -c -o $@ $< > $(dir $@)/crt0.disasm
-
-$(obj)/mainboard/$(MAINBOARDDIR)/crt0.s: $(src)/arch/i386/init/crt0.S.lb $(obj)/crt0_includes.h
- $(CC) -x assembler-with-cpp -DASSEMBLY -E -I$(src)/include -I$(src)/arch/i386/include -I$(obj) -include $(obj)/config.h -I. -I$(src) $< > $@.new && mv $@.new $@
-
-$(obj)/coreboot: $(initobjs) $(obj)/ldscript.ld
- @printf " LINK $(subst $(obj)/,,$(@))\n"
- $(CC) -nostdlib -nostartfiles -static -o $@ -L$(obj) -T $(obj)/ldscript.ld $(initobjs)
- $(NM) -n $(obj)/coreboot | sort > $(obj)/coreboot.map
-
#######################################################################
# i386 specific tools
-$(obj)/option_table.h $(obj)/option_table.c: $(obj)/build_opt_tbl $(top)/src/mainboard/$(MAINBOARDDIR)/cmos.layout
+$(obj)/option_table.h $(obj)/option_table.c $(obj)/arch/i386/../../option_table.c: $(obj)/build_opt_tbl $(top)/src/mainboard/$(MAINBOARDDIR)/cmos.layout
@printf " OPTION $(subst $(obj)/,,$(@))\n"
$(obj)/build_opt_tbl --config $(top)/src/mainboard/$(MAINBOARDDIR)/cmos.layout --header $(obj)/option_table.h --option $(obj)/option_table.c
@@ -91,3 +63,9 @@ $(obj)/coreboot.a: $(objs)
# done
endif
+
+ifeq ($(CONFIG_TINY_BOOTBLOCK),y)
+include $(src)/arch/i386/Makefile.tinybootblock.inc
+else
+include $(src)/arch/i386/Makefile.bigbootblock.inc
+endif
diff --git a/src/arch/i386/Makefile.tinybootblock.inc b/src/arch/i386/Makefile.tinybootblock.inc
new file mode 100644
index 0000000000..86a71a8b7e
--- /dev/null
+++ b/src/arch/i386/Makefile.tinybootblock.inc
@@ -0,0 +1,87 @@
+ifdef POST_EVALUATION
+
+#######################################################################
+# Build the final rom image
+
+$(obj)/coreboot.pre1: $(obj)/coreboot.bootblock $(CBFSTOOL)
+ rm -f $@
+ $(CBFSTOOL) $@ create $(CONFIG_COREBOOT_ROMSIZE_KB)K $(obj)/coreboot.bootblock
+
+$(obj)/coreboot.pre: $(obj)/coreboot.romstage $(obj)/coreboot.pre1 $(CBFSTOOL)
+ rm -f $@
+ cp $(obj)/coreboot.pre1 $@
+ $(CBFSTOOL) $@ add-stage $(obj)/romstage.elf fallback/romstage x 0x$(shell cat $(obj)/location.txt)
+#FIXME: location.txt might require an offset of header size
+
+#######################################################################
+# Build the bootblock
+
+$(obj)/coreboot.bootblock: $(obj)/bootblock.elf
+ @printf " OBJCOPY $(subst $(obj)/,,$(@))\n"
+ $(OBJCOPY) -O binary $< $@
+
+bootblock_lds := $(src)/arch/i386/init/ldscript_failover.lb
+bootblock_lds += $(src)/cpu/x86/16bit/entry16.lds
+bootblock_lds += $(src)/cpu/x86/16bit/reset16.lds
+bootblock_lds += $(src)/arch/i386/lib/id.lds
+
+bootblock_inc := $(src)/arch/i386/init/bootblock_prologue.c
+bootblock_inc += $(src)/cpu/x86/16bit/entry16.inc
+bootblock_inc += $(src)/cpu/x86/16bit/reset16.inc
+bootblock_inc += $(src)/cpu/x86/32bit/entry32.inc
+bootblock_inc += $(src)/arch/i386/lib/id.inc
+bootblock_inc += $(obj)/mainboard/$(MAINBOARDDIR)/bootblock.inc
+bootblock_inc += $(src)/arch/i386/lib/walkcbfs.S
+
+$(obj)/bootblock/ldscript.ld: $(bootblock_ldscripts) $(obj)/ldoptions
+ mkdir -p $(obj)/bootblock
+ printf '$(foreach ldscript,ldoptions $(bootblock_lds),INCLUDE "$(ldscript)"\n)' > $@
+
+$(obj)/bootblock/bootblock.c: $(bootblock_inc)
+ mkdir -p $(obj)/bootblock
+ printf '$(foreach crt0,config.h $(bootblock_inc),#include "$(crt0)"\n)' > $@
+
+$(obj)/mainboard/$(MAINBOARDDIR)/bootblock.o: $(obj)/mainboard/$(MAINBOARDDIR)/bootblock.s
+ $(CC) -I$(obj) -Wa,-acdlns -c -o $@ $< > $(dir $@)/crt0.disasm
+
+$(obj)/mainboard/$(MAINBOARDDIR)/bootblock.s: $(obj)/bootblock/bootblock.c
+ $(CC) -x assembler-with-cpp -DASSEMBLY -E -I$(src)/include -I$(src)/arch/i386/include -I$(obj) -I$(obj)/bootblock -include $(obj)/config.h -I. -I$(src) $< > $@.new && mv $@.new $@
+
+$(obj)/mainboard/$(MAINBOARDDIR)/bootblock.inc: $(obj)/romcc $(src)/arch/i386/init/bootblock.c
+ $(obj)/romcc $(ROMCCFLAGS) $(INCLUDES) $(src)/arch/i386/init/bootblock.c -o $@
+
+$(obj)/bootblock.elf: $(obj)/mainboard/$(MAINBOARDDIR)/bootblock.o $(obj)/bootblock/ldscript.ld
+ @printf " LINK $(subst $(obj)/,,$(@))\n"
+ $(CC) -nostdlib -nostartfiles -static -o $@ -L$(obj) -T $(obj)/bootblock/ldscript.ld $<
+ $(NM) -n $(obj)/bootblock.elf | sort > $(obj)/bootblock.map
+
+#######################################################################
+# Build the romstage
+$(obj)/coreboot.romstage: $(obj)/coreboot.pre1 $(initobjs) $(obj)/romstage/ldscript.ld
+ @printf " LINK $(subst $(obj)/,,$(@))\n"
+ printf "CONFIG_ROMBASE = 0x0;\n" > $(obj)/location.ld
+ $(CC) -nostdlib -nostartfiles -static -o $(obj)/romstage.elf -L$(obj) -T $(obj)/romstage/ldscript.ld $(initobjs)
+ $(OBJCOPY) -O binary $(obj)/romstage.elf $(obj)/romstage.bin
+ printf "CONFIG_ROMBASE = 0x" > $(obj)/location.ld
+ $(CBFSTOOL) $(obj)/coreboot.pre1 locate $(obj)/romstage.bin fallback/romstage $(CONFIG_XIP_ROM_SIZE) > $(obj)/location.txt
+ cat $(obj)/location.txt >> $(obj)/location.ld
+ printf ";\n" >> $(obj)/location.ld
+ $(CC) -nostdlib -nostartfiles -static -o $(obj)/romstage.elf -L$(obj) -T $(obj)/romstage/ldscript.ld $(initobjs)
+ $(NM) -n $(obj)/romstage.elf | sort > $(obj)/romstage.map
+ $(OBJCOPY) -O binary $(obj)/romstage.elf $@
+
+$(obj)/romstage/ldscript.ld: $(ldscripts) $(obj)/ldoptions
+ mkdir -p $(obj)/romstage
+ printf '$(foreach ldscript,ldoptions location.ld $(ldscripts),INCLUDE "$(ldscript:$(obj)/%=%)"\n)' > $@
+
+$(obj)/romstage/crt0_includes.h: $(crt0s)
+ mkdir -p $(obj)/romstage
+ printf '$(foreach crt0,config.h $(crt0s),#include "$(crt0:$(obj)/%=%)"\n)' > $@
+
+$(obj)/mainboard/$(MAINBOARDDIR)/crt0.o: $(obj)/mainboard/$(MAINBOARDDIR)/crt0.s
+ $(CC) -I$(obj) -Wa,-acdlns -c -o $@ $< > $(dir $@)/crt0.disasm
+
+$(obj)/mainboard/$(MAINBOARDDIR)/crt0.s: $(src)/arch/i386/init/crt0.S.lb $(obj)/romstage/crt0_includes.h
+ $(CC) -x assembler-with-cpp -DASSEMBLY -E -I$(src)/include -I$(src)/arch/i386/include -I$(obj) -I$(obj)/romstage -include $(obj)/config.h -I. -I$(src) $< > $@.new && mv $@.new $@
+
+endif
diff --git a/src/arch/i386/init/bootblock.c b/src/arch/i386/init/bootblock.c
new file mode 100644
index 0000000000..eea0198d00
--- /dev/null
+++ b/src/arch/i386/init/bootblock.c
@@ -0,0 +1,24 @@
+static unsigned long findstage(char* target)
+{
+ unsigned long entry;
+ asm volatile (
+ "mov $1f, %%esp\n\t"
+ "jmp walkcbfs\n\t"
+ "1:\n\t" : "=a" (entry) : "S" (target) : "ebx", "ecx", "edx", "edi", "ebp", "esp");
+ return entry;
+}
+
+static void call(unsigned long addr)
+{
+ asm volatile ("jmp %0\n\t" : : "r" (addr));
+}
+
+static void main(void)
+{
+ const char* target1 = "fallback/romstage";
+ unsigned long entry;
+ entry = findstage(target1);
+ if (entry) call(entry);
+ asm volatile ("1:\n\thlt\n\tjmp 1b\n\t");
+}
+
diff --git a/src/arch/i386/init/bootblock_prologue.c b/src/arch/i386/init/bootblock_prologue.c
new file mode 100644
index 0000000000..f921c3f8d0
--- /dev/null
+++ b/src/arch/i386/init/bootblock_prologue.c
@@ -0,0 +1,37 @@
+/* -*- asm -*-
+ * $ $
+ *
+ */
+
+/*
+ * Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer
+ *
+ * This file 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.
+ *
+ * Originally this code was part of ucl the data compression library
+ * for upx the ``Ultimate Packer of eXecutables''.
+ *
+ * - Converted to gas assembly, and refitted to work with etherboot.
+ * Eric Biederman 20 Aug 2002
+ * - Merged the nrv2b decompressor into crt0.base of coreboot
+ * Eric Biederman 26 Sept 2002
+ */
+
+
+#include <arch/asm.h>
+#include <arch/intel.h>
+#include <console/loglevel.h>
+
+/*
+ * This is the entry code the code in .reset section
+ * jumps to this address.
+ *
+ */
+.section ".rom.data", "a", @progbits
+.section ".rom.text", "ax", @progbits
+
+ intel_chip_post_macro(0x01) /* delay for chipsets */
+
diff --git a/src/arch/i386/lib/walkcbfs.S b/src/arch/i386/lib/walkcbfs.S
new file mode 100644
index 0000000000..aba0453d1f
--- /dev/null
+++ b/src/arch/i386/lib/walkcbfs.S
@@ -0,0 +1,94 @@
+#define CBFS_HEADER_PTR 0xfffffffc
+
+#define CBFS_HEADER_MAGIC 0
+#define CBFS_HEADER_VERSION (CBFS_HEADER_MAGIC + 4)
+#define CBFS_HEADER_ROMSIZE (CBFS_HEADER_VERSION + 4)
+#define CBFS_HEADER_BOOTBLOCKSIZE (CBFS_HEADER_ROMSIZE + 4)
+#define CBFS_HEADER_ALIGN (CBFS_HEADER_BOOTBLOCKSIZE + 4)
+#define CBFS_HEADER_OFFSET (CBFS_HEADER_ALIGN + 4)
+
+#define CBFS_FILE_MAGIC 0
+#define CBFS_FILE_LEN (CBFS_FILE_MAGIC + 8)
+#define CBFS_FILE_TYPE (CBFS_FILE_LEN + 4)
+#define CBFS_FILE_CHECKSUM (CBFS_FILE_TYPE + 4)
+#define CBFS_FILE_OFFSET (CBFS_FILE_CHECKSUM + 4)
+
+#define CBFS_FILE_STRUCTSIZE (CBFS_FILE_OFFSET + 4)
+
+#define CBFS_STAGE_COMPRESSION 0
+#define CBFS_STAGE_ENTRY (CBFS_STAGE_COMPRESSION + 4)
+#define CBFS_STAGE_LOAD (CBFS_STAGE_ENTRY + 8)
+#define CBFS_STAGE_LEN (CBFS_STAGE_LOAD + 8)
+#define CBFS_STAGE_MEMLEN (CBFS_STAGE_LEN + 4)
+
+/*
+ input %esi: filename
+ input %esp: return address (not pointer to return address!)
+ output %eax: entry point
+ clobbers %ebx, %ecx, %edx, %edi, %ebp
+*/
+walkcbfs:
+ mov %esi, %ebp /* stash away filename pointer */
+ mov $0, %edx
+1:
+ cmpb $0, (%edx,%esi)
+ jz 2f
+ add $1, %edx
+ jmp 1b
+2:
+ add $1, %edx
+ mov CBFS_HEADER_PTR, %eax
+ mov CBFS_HEADER_ROMSIZE(%eax), %ecx
+ bswap %ecx
+ mov $0, %ebx
+ sub %ecx, %ebx
+ mov CBFS_HEADER_OFFSET(%eax), %ecx
+ bswap %ecx
+ add %ecx, %ebx
+ mov CBFS_HEADER_ALIGN(%eax), %eax
+ bswap %eax
+ sub $1, %eax
+
+walker:
+ mov %ebp, %esi
+ mov %ebx, %edi
+ add $CBFS_FILE_STRUCTSIZE, %edi /* edi = address of first byte after struct cbfs_file */
+ mov %edx, %ecx
+ repe cmpsb
+ # zero flag set if strings are equal
+ jnz tryharder
+
+ # we found it!
+ mov CBFS_FILE_OFFSET(%ebx), %eax
+ bswap %eax
+ add %ebx, %eax
+ add $CBFS_STAGE_ENTRY, %eax /* eax = ((cbfs_stage* (cbfs_file* ebx)->offset)->entry) */
+ mov 0(%eax), %eax
+ jmp *%esp
+
+tryharder:
+ mov CBFS_FILE_OFFSET(%ebx), %ecx
+ bswap %ecx
+ add %ebx, %ecx
+ mov CBFS_FILE_LEN(%ebx), %edi
+ bswap %edi
+ add %edi, %ecx
+ add %eax, %ecx
+ mov %eax, %edi
+ not %edi
+ and %edi, %ecx
+ mov %ecx, %ebx
+
+ /* look if we should exit */
+ mov CBFS_HEADER_PTR, %esi
+ mov CBFS_HEADER_ROMSIZE(%esi), %ecx
+ bswap %ecx
+ not %ecx
+ add $1, %ecx
+
+ cmp %ebx, %ecx
+ /* if we're still inside the ROM area, jump back */
+ jbe walker
+
+ mov $0, %eax
+ jmp *%esp
diff --git a/src/cpu/x86/32bit/entry32.lds b/src/cpu/x86/32bit/entry32.lds
index e69de29bb2..471b5f7005 100644
--- a/src/cpu/x86/32bit/entry32.lds
+++ b/src/cpu/x86/32bit/entry32.lds
@@ -0,0 +1 @@
+ENTRY(protected_start)
diff --git a/src/mainboard/emulation/qemu-x86/Kconfig b/src/mainboard/emulation/qemu-x86/Kconfig
index 38d460df76..5200e269bc 100644
--- a/src/mainboard/emulation/qemu-x86/Kconfig
+++ b/src/mainboard/emulation/qemu-x86/Kconfig
@@ -6,6 +6,7 @@ config BOARD_EMULATION_QEMU_X86
select HAVE_PIRQ_TABLE
select BOARD_ROMSIZE_KB_256
select WARNINGS_ARE_ERRORS
+ select TINY_BOOTBLOCK
config MAINBOARD_DIR
string
diff --git a/src/mainboard/emulation/qemu-x86/Makefile.inc b/src/mainboard/emulation/qemu-x86/Makefile.inc
index 977cb4ad50..0f4aedff98 100644
--- a/src/mainboard/emulation/qemu-x86/Makefile.inc
+++ b/src/mainboard/emulation/qemu-x86/Makefile.inc
@@ -1,18 +1,12 @@
initobj-y += crt0.o
-crt0-y += ../../../../src/cpu/x86/16bit/entry16.inc
crt0-y += ../../../../src/cpu/x86/32bit/entry32.inc
-crt0-y += ../../../../src/cpu/x86/16bit/reset16.inc
-crt0-y += ../../../../src/arch/i386/lib/id.inc
crt0-y += auto.inc
obj-y += mainboard.o
obj-$(CONFIG_GENERATE_PIRQ_TABLE) += irq_tables.o
ldscript-y += ../../../../src/arch/i386/init/ldscript_fallback_cbfs.lb
-ldscript-y += ../../../../src/cpu/x86/16bit/entry16.lds
ldscript-y += ../../../../src/cpu/x86/32bit/entry32.lds
-ldscript-y += ../../../../src/cpu/x86/16bit/reset16.lds
-ldscript-y += ../../../../src/arch/i386/lib/id.lds
ifdef POST_EVALUATION
diff --git a/util/cbfstool/cbfs-mkstage.c b/util/cbfstool/cbfs-mkstage.c
index 693d7cc099..6e8daef508 100644
--- a/util/cbfstool/cbfs-mkstage.c
+++ b/util/cbfstool/cbfs-mkstage.c
@@ -122,6 +122,10 @@ int parse_elf_to_stage(unsigned char *input, unsigned char **output,
mem_end = mend;
}
+ if (data_start < *location) {
+ data_start = *location;
+ }
+
/* allocate an intermediate buffer for the data */
buffer = calloc(data_end - data_start, 1);
@@ -133,6 +137,7 @@ int parse_elf_to_stage(unsigned char *input, unsigned char **output,
/* Copy the file data into the buffer */
for (i = 0; i < headers; i++) {
+ unsigned int l_start, l_offset = 0;
if (elf32_to_native(phdr[i].p_type) != PT_LOAD)
continue;
@@ -140,9 +145,15 @@ int parse_elf_to_stage(unsigned char *input, unsigned char **output,
if (elf32_to_native(phdr[i].p_memsz) == 0)
continue;
- memcpy(buffer + (elf32_to_native(phdr[i].p_paddr) - data_start),
- &header[elf32_to_native(phdr[i].p_offset)],
- elf32_to_native(phdr[i].p_filesz));
+ l_start = elf32_to_native(phdr[i].p_paddr);
+ if (l_start < *location) {
+ l_offset = *location - l_start;
+ l_start = *location;
+ }
+
+ memcpy(buffer + (l_start - data_start),
+ &header[elf32_to_native(phdr[i].p_offset)+l_offset],
+ elf32_to_native(phdr[i].p_filesz)-l_offset);
}
/* Now make the output buffer */
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-09 07:07:39 +0000