| /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 */ |
| ); |
| } |
| /** @} |
| */ |