/branches/dynload/uspace/app/iloader/elf_load.c |
---|
113,6 → 113,7 |
} |
pcb->entry = info->entry; |
pcb->dynamic = info->dynamic; |
return 0; |
} |
/branches/dynload/uspace/app/iloader/pcb.h |
---|
45,6 → 45,9 |
typedef struct { |
/** Program entry point */ |
entry_point_t entry; |
/** Pointer to ELF dynamic section of the program */ |
void *dynamic; |
} pcb_t; |
#endif |
/branches/dynload/uspace/lib/rtld/include/elf_dyn.h |
---|
0,0 → 1,75 |
/* |
* Copyright (c) 2008 Jiri Svoboda |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup generic |
* @{ |
*/ |
/** @file |
*/ |
#ifndef ELF_DYN_H_ |
#define ELF_DYN_H_ |
#include <arch/elf.h> |
#include <sys/types.h> |
#include "elf.h" |
#include "arch/elf_dyn.h" |
#define ELF32_R_SYM(i) ((i)>>8) |
#define ELF32_R_TYPE(i) ((unsigned char)(i)) |
struct elf32_dyn { |
elf_sword d_tag; |
union { |
elf_word d_val; |
elf32_addr d_ptr; |
} d_un; |
}; |
struct elf32_rel { |
elf32_addr r_offset; |
elf_word r_info; |
}; |
struct elf32_rela { |
elf32_addr r_offset; |
elf_word r_info; |
elf_sword r_addend; |
}; |
#ifdef __32_BITS__ |
typedef struct elf32_dyn elf_dyn_t; |
typedef struct elf32_rel elf_rel_t; |
typedef struct elf32_rela elf_rela_t; |
#endif |
#endif |
/** @} |
*/ |
/branches/dynload/uspace/lib/rtld/include/rtld.h |
---|
0,0 → 1,43 |
/* |
* Copyright (c) 2008 Jiri Svoboda |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup generic |
* @{ |
*/ |
/** @file |
*/ |
#ifndef RTLD_H_ |
#define RTLD_H_ |
void _rtld_main(void); |
#endif |
/** @} |
*/ |
/branches/dynload/uspace/lib/rtld/include/elf.h |
---|
0,0 → 1,344 |
/* |
* Copyright (c) 2006 Sergey Bondari |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup generic |
* @{ |
*/ |
/** @file |
*/ |
#ifndef ELF_H_ |
#define ELF_H_ |
#include <arch/elf.h> |
#include <sys/types.h> |
/** |
* current ELF version |
*/ |
#define EV_CURRENT 1 |
/** |
* ELF types |
*/ |
#define ET_NONE 0 /* No type */ |
#define ET_REL 1 /* Relocatable file */ |
#define ET_EXEC 2 /* Executable */ |
#define ET_DYN 3 /* Shared object */ |
#define ET_CORE 4 /* Core */ |
#define ET_LOPROC 0xff00 /* Processor specific */ |
#define ET_HIPROC 0xffff /* Processor specific */ |
/** |
* ELF machine types |
*/ |
#define EM_NO 0 /* No machine */ |
#define EM_SPARC 2 /* SPARC */ |
#define EM_386 3 /* i386 */ |
#define EM_MIPS 8 /* MIPS RS3000 */ |
#define EM_MIPS_RS3_LE 10 /* MIPS RS3000 LE */ |
#define EM_PPC 20 /* PPC32 */ |
#define EM_PPC64 21 /* PPC64 */ |
#define EM_ARM 40 /* ARM */ |
#define EM_SPARCV9 43 /* SPARC64 */ |
#define EM_IA_64 50 /* IA-64 */ |
#define EM_X86_64 62 /* AMD64/EMT64 */ |
/** |
* ELF identification indexes |
*/ |
#define EI_MAG0 0 |
#define EI_MAG1 1 |
#define EI_MAG2 2 |
#define EI_MAG3 3 |
#define EI_CLASS 4 /* File class */ |
#define EI_DATA 5 /* Data encoding */ |
#define EI_VERSION 6 /* File version */ |
#define EI_OSABI 7 |
#define EI_ABIVERSION 8 |
#define EI_PAD 9 /* Start of padding bytes */ |
#define EI_NIDENT 16 /* ELF identification table size */ |
/** |
* ELF magic number |
*/ |
#define ELFMAG0 0x7f |
#define ELFMAG1 'E' |
#define ELFMAG2 'L' |
#define ELFMAG3 'F' |
/** |
* ELF file classes |
*/ |
#define ELFCLASSNONE 0 |
#define ELFCLASS32 1 |
#define ELFCLASS64 2 |
/** |
* ELF data encoding types |
*/ |
#define ELFDATANONE 0 |
#define ELFDATA2LSB 1 /* Least significant byte first (little endian) */ |
#define ELFDATA2MSB 2 /* Most signigicant byte first (big endian) */ |
/** |
* ELF error return codes |
*/ |
#define EE_OK 0 /* No error */ |
#define EE_INVALID 1 /* Invalid ELF image */ |
#define EE_MEMORY 2 /* Cannot allocate address space */ |
#define EE_INCOMPATIBLE 3 /* ELF image is not compatible with current architecture */ |
#define EE_UNSUPPORTED 4 /* Non-supported ELF (e.g. dynamic ELFs) */ |
#define EE_IRRECOVERABLE 5 |
/** |
* ELF section types |
*/ |
#define SHT_NULL 0 |
#define SHT_PROGBITS 1 |
#define SHT_SYMTAB 2 |
#define SHT_STRTAB 3 |
#define SHT_RELA 4 |
#define SHT_HASH 5 |
#define SHT_DYNAMIC 6 |
#define SHT_NOTE 7 |
#define SHT_NOBITS 8 |
#define SHT_REL 9 |
#define SHT_SHLIB 10 |
#define SHT_DYNSYM 11 |
#define SHT_LOOS 0x60000000 |
#define SHT_HIOS 0x6fffffff |
#define SHT_LOPROC 0x70000000 |
#define SHT_HIPROC 0x7fffffff |
#define SHT_LOUSER 0x80000000 |
#define SHT_HIUSER 0xffffffff |
/** |
* ELF section flags |
*/ |
#define SHF_WRITE 0x1 |
#define SHF_ALLOC 0x2 |
#define SHF_EXECINSTR 0x4 |
#define SHF_TLS 0x400 |
#define SHF_MASKPROC 0xf0000000 |
/** |
* Symbol binding |
*/ |
#define STB_LOCAL 0 |
#define STB_GLOBAL 1 |
#define STB_WEAK 2 |
#define STB_LOPROC 13 |
#define STB_HIPROC 15 |
/** |
* Symbol types |
*/ |
#define STT_NOTYPE 0 |
#define STT_OBJECT 1 |
#define STT_FUNC 2 |
#define STT_SECTION 3 |
#define STT_FILE 4 |
#define STT_LOPROC 13 |
#define STT_HIPROC 15 |
/** |
* Program segment types |
*/ |
#define PT_NULL 0 |
#define PT_LOAD 1 |
#define PT_DYNAMIC 2 |
#define PT_INTERP 3 |
#define PT_NOTE 4 |
#define PT_SHLIB 5 |
#define PT_PHDR 6 |
#define PT_LOPROC 0x70000000 |
#define PT_HIPROC 0x7fffffff |
/** |
* Program segment attributes. |
*/ |
#define PF_X 1 |
#define PF_W 2 |
#define PF_R 4 |
/** |
* ELF data types |
* |
* These types are found to be identical in both 32-bit and 64-bit |
* ELF object file specifications. They are the only types used |
* in ELF header. |
*/ |
typedef uint64_t elf_xword; |
typedef int64_t elf_sxword; |
typedef uint32_t elf_word; |
typedef int32_t elf_sword; |
typedef uint16_t elf_half; |
/** |
* 32-bit ELF data types. |
* |
* These types are specific for 32-bit format. |
*/ |
typedef uint32_t elf32_addr; |
typedef uint32_t elf32_off; |
/** |
* 64-bit ELF data types. |
* |
* These types are specific for 64-bit format. |
*/ |
typedef uint64_t elf64_addr; |
typedef uint64_t elf64_off; |
/** ELF header */ |
struct elf32_header { |
uint8_t e_ident[EI_NIDENT]; |
elf_half e_type; |
elf_half e_machine; |
elf_word e_version; |
elf32_addr e_entry; |
elf32_off e_phoff; |
elf32_off e_shoff; |
elf_word e_flags; |
elf_half e_ehsize; |
elf_half e_phentsize; |
elf_half e_phnum; |
elf_half e_shentsize; |
elf_half e_shnum; |
elf_half e_shstrndx; |
}; |
struct elf64_header { |
uint8_t e_ident[EI_NIDENT]; |
elf_half e_type; |
elf_half e_machine; |
elf_word e_version; |
elf64_addr e_entry; |
elf64_off e_phoff; |
elf64_off e_shoff; |
elf_word e_flags; |
elf_half e_ehsize; |
elf_half e_phentsize; |
elf_half e_phnum; |
elf_half e_shentsize; |
elf_half e_shnum; |
elf_half e_shstrndx; |
}; |
/* |
* ELF segment header. |
* Segments headers are also known as program headers. |
*/ |
struct elf32_segment_header { |
elf_word p_type; |
elf32_off p_offset; |
elf32_addr p_vaddr; |
elf32_addr p_paddr; |
elf_word p_filesz; |
elf_word p_memsz; |
elf_word p_flags; |
elf_word p_align; |
}; |
struct elf64_segment_header { |
elf_word p_type; |
elf_word p_flags; |
elf64_off p_offset; |
elf64_addr p_vaddr; |
elf64_addr p_paddr; |
elf_xword p_filesz; |
elf_xword p_memsz; |
elf_xword p_align; |
}; |
/* |
* ELF section header |
*/ |
struct elf32_section_header { |
elf_word sh_name; |
elf_word sh_type; |
elf_word sh_flags; |
elf32_addr sh_addr; |
elf32_off sh_offset; |
elf_word sh_size; |
elf_word sh_link; |
elf_word sh_info; |
elf_word sh_addralign; |
elf_word sh_entsize; |
}; |
struct elf64_section_header { |
elf_word sh_name; |
elf_word sh_type; |
elf_xword sh_flags; |
elf64_addr sh_addr; |
elf64_off sh_offset; |
elf_xword sh_size; |
elf_word sh_link; |
elf_word sh_info; |
elf_xword sh_addralign; |
elf_xword sh_entsize; |
}; |
/* |
* ELF symbol table entry |
*/ |
struct elf32_symbol { |
elf_word st_name; |
elf32_addr st_value; |
elf_word st_size; |
uint8_t st_info; |
uint8_t st_other; |
elf_half st_shndx; |
}; |
struct elf64_symbol { |
elf_word st_name; |
uint8_t st_info; |
uint8_t st_other; |
elf_half st_shndx; |
elf64_addr st_value; |
elf_xword st_size; |
}; |
#ifdef __32_BITS__ |
typedef struct elf32_header elf_header_t; |
typedef struct elf32_segment_header elf_segment_header_t; |
typedef struct elf32_section_header elf_section_header_t; |
typedef struct elf32_symbol elf_symbol_t; |
#endif |
#ifdef __64_BITS__ |
typedef struct elf64_header elf_header_t; |
typedef struct elf64_segment_header elf_segment_header_t; |
typedef struct elf64_section_header elf_section_header_t; |
typedef struct elf64_symbol elf_symbol_t; |
#endif |
extern char *elf_error(unsigned int rc); |
#endif |
/** @} |
*/ |
/branches/dynload/uspace/lib/rtld/rtld.c |
---|
38,6 → 38,7 |
#include <unistd.h> |
#include <fcntl.h> |
#include <rtld.h> |
#include "../../app/iloader/pcb.h" |
static void kputint(unsigned i) |
/branches/dynload/uspace/lib/rtld/Makefile |
---|
37,7 → 37,7 |
include $(LIBC_PREFIX)/Makefile.toolchain |
include arch/$(ARCH)/Makefile.inc |
CFLAGS += -I../../srv/kbd/include -I../../srv/console -fPIC -O0 |
CFLAGS += -I../../srv/kbd/include -I../../srv/console -Iinclude -fPIC -O0 |
LFLAGS = -shared --no-undefined |
LIBS = $(LIBC_PREFIX)/libc.pic.a |
61,14 → 61,17 |
GENERIC_OBJECTS := $(addsuffix .o,$(basename $(GENERIC_SOURCES))) |
ARCH_OBJECTS := $(addsuffix .o,$(basename $(ARCH_SOURCES))) |
.PHONY: all clean depend disasm sections |
.PHONY: all clean depend disasm sections inc |
all: $(OUTPUT) disasm sections |
all: inc $(OUTPUT) disasm sections |
inc: |
ln -sfn ../arch/$(ARCH)/include include/arch |
-include Makefile.depend |
clean: |
-rm -f $(OUTPUT) $(OUTPUT).map $(OUTPUT).disasm $(OUTPUT).sections Makefile.depend *.o arch/$(ARCH)/_link.ld |
-rm -f $(OUTPUT) $(OUTPUT).map $(OUTPUT).disasm $(OUTPUT).sections Makefile.depend *.o arch/$(ARCH)/_link.ld include/arch |
find arch/$(ARCH)/ -name '*.o' -follow -exec rm \{\} \; |
depend: |
/branches/dynload/uspace/lib/rtld/arch/ia32/bootstrap.c |
---|
File deleted |
/branches/dynload/uspace/lib/rtld/arch/ia32/runtime.c |
---|
File deleted |
/branches/dynload/uspace/lib/rtld/arch/ia32/entry.s |
---|
File deleted |
/branches/dynload/uspace/lib/rtld/arch/ia32/include/elf_dyn.h |
---|
0,0 → 1,50 |
/* |
* Copyright (c) 2008 Jiri Svoboda |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup generic |
* @{ |
*/ |
/** @file |
*/ |
#ifndef ia32_ELF_DYN_H_ |
#define ia32_ELF_DYN_H_ |
/* |
* ia32 dynamic relocation types |
*/ |
#define R_386_32 1 |
#define R_386_GLOB_DAT 6 |
#define R_386_JUMP_SLOT 7 |
#define R_386_RELATIVE 8 |
#endif |
/** @} |
*/ |
/branches/dynload/uspace/lib/rtld/arch/ia32/Makefile.inc |
---|
26,8 → 26,10 |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
CFLAGS += -D__32_BITS__ |
ARCH_SOURCES := \ |
arch/$(ARCH)/entry.s \ |
arch/$(ARCH)/bootstrap.c \ |
arch/$(ARCH)/runtime.c |
arch/$(ARCH)/src/entry.s \ |
arch/$(ARCH)/src/bootstrap.c \ |
arch/$(ARCH)/src/runtime.c |
/branches/dynload/uspace/lib/rtld/arch/ia32/src/entry.s |
---|
0,0 → 1,42 |
# |
# Copyright (c) 2005 Martin Decky |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
.section .text |
.globl __bootstrap |
.hidden __bootstrap |
.type __entry, @function |
__entry: |
mov %ss, %ax |
mov %ax, %ds |
mov %ax, %es |
mov %ax, %fs |
call __bootstrap |
/branches/dynload/uspace/lib/rtld/arch/ia32/src/runtime.c |
---|
0,0 → 1,98 |
/* |
* Copyright (c) 2008 Jiri Svoboda |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup rtld rtld |
* @brief |
* @{ |
*/ |
/** |
* @file |
*/ |
#include <sys/types.h> |
#include <align.h> |
#include <tls.h> |
void _putint(int i); |
/* FIXME */ |
void __udivdi3(void); |
void __umoddi3(void); |
static void kputint(unsigned i) |
{ |
unsigned dummy; |
asm volatile ( |
"movl $30, %%eax;" |
"int $0x30" |
: "=d" (dummy) /* output - %edx clobbered */ |
: "d" (i) /* input */ |
: "%eax","%ecx" /* all scratch registers clobbered */ |
); |
} |
typedef struct { |
unsigned long int ti_module; |
unsigned long int ti_offset; |
} tls_index; |
void __attribute__ ((__regparm__ (1))) |
*___tls_get_addr(tls_index *ti); |
void __attribute__ ((__regparm__ (1))) |
*___tls_get_addr(tls_index *ti) |
{ |
size_t tls_size; |
uint8_t *tls; |
/* Calculate size of TLS block */ |
tls_size = ALIGN_UP(&_tbss_end - &_tdata_start, &_tls_alignment); |
/* The TLS block is just before TCB */ |
tls = (uint8_t *)__tcb_get() - tls_size; |
return tls + ti->ti_offset; |
} |
void __umoddi3(void) |
{ |
kputint(0x101); |
*(int *)0 = 0; /* cause a page fault */ |
} |
void __udivdi3(void) |
{ |
kputint(0x102); |
*(int *)0 = 0; /* cause a page fault */ |
} |
void _putint(int i) |
{ |
} |
/** @} |
*/ |
/branches/dynload/uspace/lib/rtld/arch/ia32/src/bootstrap.c |
---|
0,0 → 1,239 |
/* |
* Copyright (c) 2008 Jiri Svoboda |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
/** @addtogroup rtld rtld |
* @brief |
* @{ |
*/ |
/** |
* @file |
*/ |
#include <elf_dyn.h> |
#include <rtld.h> |
void __main(void); |
void __io_init(void); |
void __exit(void); |
static void kputint(unsigned i) |
{ |
unsigned dummy; |
asm volatile ( |
"movl $30, %%eax;" |
"int $0x30" |
: "=d" (dummy) /* output - %edx clobbered */ |
: "d" (i) /* input */ |
: "%eax","%ecx" /* all scratch registers clobbered */ |
); |
} |
void __bootstrap(void) |
{ |
unsigned bias; |
unsigned *got; |
elf_dyn_t *dynamic; |
void *dptr; |
unsigned dval; |
int i; |
size_t rel_entries; |
size_t r_offset; |
elf_word r_info; |
unsigned rel_type; |
elf_word sym_idx; |
uintptr_t sym_addr; |
elf_symbol_t *sym_table; |
elf_rel_t *rel_table; |
elf_rel_t *jmp_rel_table; |
size_t jmp_rel_entries; |
asm volatile ( |
/* Calculate the bias into %0 */ |
/* Generates "fake" R_386_RELATIVE run-time relocation */ |
" call .L0;" |
".L0: pop %0;" |
" subl $.L0, %0;" |
/* Calculate run-time address of _DYNAMIC into %1 */ |
/* Generates "fake" R_386_RELATIVE run-time relocation */ |
" movl $_DYNAMIC, %1;" /* Again, at link time 0-based VMA gets in */ |
" addl %0, %1;" /* Add bias to compute run-time address */ |
: "=r" (bias), "=r" (dynamic) |
); |
kputint(bias); |
kputint((unsigned)dynamic); |
/* parse DYNAMIC */ |
got = 0; |
sym_table = 0; |
rel_table = 0; |
rel_entries = 0; |
jmp_rel_table = 0; |
jmp_rel_entries = 0; |
i = 0; |
while (dynamic[i].d_tag != 0) { |
dptr = (void *)(dynamic[i].d_un.d_val + bias); |
dval = dynamic[i].d_un.d_val; |
switch (dynamic[i].d_tag) { |
case 2/* DT_PLTRELSZ */: jmp_rel_entries = dval/8; break; |
case 23/* DT_JMPREL */: jmp_rel_table = dptr; break; |
case 3 /* DT_PLTGOT */: |
/* GOT address */ |
got = dptr; break; |
case 6 /* DT_SYMTAB */ : sym_table = dptr; break; |
case 17 /* DT_REL */ : rel_table = dptr; break; |
case 18 /* DT_RELSZ */ : rel_entries = dval / 8; break; |
default: break; |
} |
++i; |
} |
kputint(1); |
kputint((unsigned)sym_table); |
kputint((unsigned)rel_table); |
kputint((unsigned)rel_entries); |
/* Now relocate all our dynsyms */ |
kputint(-1); |
for (i=0; i<rel_entries; i++) { |
kputint(i); |
r_offset = rel_table[i].r_offset; |
r_info = rel_table[i].r_info; |
rel_type = ELF32_R_TYPE(r_info); |
kputint(rel_type); |
kputint(r_offset); |
switch (rel_type) { |
case 6: /* R_386_GLOB_DAT */ |
case 7: /* R_386_JUMP_SLOT */ |
kputint(16); |
sym_idx = ELF32_R_SYM(r_info); |
sym_addr = sym_table[sym_idx].st_value + bias; |
kputint(sym_idx); |
kputint(sym_addr); |
*(unsigned *)(r_offset+bias) = sym_addr; |
break; |
case 1: /* R_386_32 */ |
kputint(16); |
sym_idx = ELF32_R_SYM(r_info); |
sym_addr = sym_table[sym_idx].st_value + bias; |
kputint(sym_idx); |
kputint(sym_addr); |
*(unsigned *)(r_offset+bias) += sym_addr; |
break; |
case 8: /* R_386_RELATIVE */ |
kputint(16); |
*(unsigned *)(r_offset+bias) += bias; |
break; |
} |
} |
kputint(-1); |
for (i=0; i<jmp_rel_entries; i++) { |
kputint(i); |
r_offset = jmp_rel_table[i].r_offset; |
r_info = jmp_rel_table[i].r_info; |
rel_type = ELF32_R_TYPE(r_info); |
kputint(rel_type); |
kputint(r_offset); |
switch (rel_type) { |
case 6: /* R_386_GLOB_DAT */ |
case 7: /* R_386_JUMP_SLOT */ |
kputint(16); |
sym_idx = ELF32_R_SYM(r_info); |
sym_addr = sym_table[sym_idx].st_value + bias; |
kputint(sym_idx); |
kputint(sym_addr); |
*(unsigned *)(r_offset+bias) = sym_addr; |
break; |
case 1: /* R_386_32 */ |
kputint(16); |
sym_idx = ELF32_R_SYM(r_info); |
sym_addr = sym_table[sym_idx].st_value + bias; |
kputint(sym_idx); |
kputint(sym_addr); |
*(unsigned *)(r_offset+bias) += sym_addr; |
break; |
case 8: /* R_386_RELATIVE */ |
kputint(16); |
*(unsigned *)(r_offset+bias) += bias; |
break; |
} |
} |
kputint(-1); |
/* Init libc and run rtld main */ |
__main(); |
kputint(33); |
__io_init(); |
kputint(34); |
_rtld_main(); |
kputint(35); |
__exit(); |
kputint(36); |
asm ( |
"movl $250, %%eax;" |
"int $0x30" |
: /* output */ |
: /* input */ |
: "%eax","%ecx","%edx" /* all scratch registers clobbered */ |
); |
} |
/** @} |
*/ |