diff options
| -rw-r--r-- | Makefile | 9 | ||||
| -rw-r--r-- | Makefile.target | 35 | ||||
| -rw-r--r-- | dyngen.c | 2794 | ||||
| -rw-r--r-- | tcg/README | 21 |
4 files changed, 11 insertions, 2848 deletions
@@ -36,7 +36,7 @@ all: $(TOOLS) $(DOCS) recurse-all SUBDIR_RULES=$(patsubst %,subdir-%, $(TARGET_DIRS)) -subdir-%: dyngen$(EXESUF) +subdir-%: $(MAKE) -C $(subst subdir-,,$@) all $(filter %-softmmu,$(SUBDIR_RULES)): libqemu_common.a @@ -195,15 +195,10 @@ qemu-img$(EXESUF): qemu-img.o qemu-tool.o osdep.o $(BLOCK_OBJS) qemu-nbd$(EXESUF): qemu-nbd.o qemu-tool.o osdep.o $(BLOCK_OBJS) $(CC) $(LDFLAGS) -o $@ $^ -lz $(LIBS) -# dyngen host tool -dyngen$(EXESUF): dyngen.c - $(HOST_CC) $(CFLAGS) $(CPPFLAGS) -o $@ $^ - clean: # avoid old build problems by removing potentially incorrect old files rm -f config.mak config.h op-i386.h opc-i386.h gen-op-i386.h op-arm.h opc-arm.h gen-op-arm.h - rm -f *.o *.d *.a $(TOOLS) dyngen$(EXESUF) TAGS cscope.* *.pod *~ */*~ - rm -rf dyngen.dSYM + rm -f *.o *.d *.a $(TOOLS) TAGS cscope.* *.pod *~ */*~ rm -f slirp/*.o slirp/*.d audio/*.o audio/*.d $(MAKE) -C tests clean for d in $(TARGET_DIRS); do \ diff --git a/Makefile.target b/Makefile.target index c553169..07db02b 100644 --- a/Makefile.target +++ b/Makefile.target @@ -27,7 +27,6 @@ VPATH=$(SRC_PATH):$(TARGET_PATH):$(SRC_PATH)/hw CPPFLAGS=-I. -I.. -I$(TARGET_PATH) -I$(SRC_PATH) -MMD -MT $@ -MP -DNEED_CPU_H #CFLAGS+=-Werror LIBS= -DYNGEN=../dyngen$(EXESUF) # user emulator name ifndef TARGET_ARCH2 TARGET_ARCH2=$(TARGET_ARCH) @@ -186,10 +185,6 @@ all: $(PROGS) # cpu emulator library LIBOBJS=exec.o kqemu.o translate-all.o cpu-exec.o\ translate.o host-utils.o -ifdef CONFIG_DYNGEN_OP -exec.o: dyngen-opc.h -LIBOBJS+=op.o -endif # TCG code generator LIBOBJS+= tcg/tcg.o tcg/tcg-dyngen.o tcg/tcg-runtime.o CPPFLAGS+=-I$(SRC_PATH)/tcg -I$(SRC_PATH)/tcg/$(ARCH) @@ -261,35 +256,15 @@ endif # libqemu -ifdef CONFIG_DYNGEN_OP -OPC_H = gen-op.h dyngen-opc.h op.h -endif - libqemu.a: $(LIBOBJS) rm -f $@ $(AR) rcs $@ $(LIBOBJS) -translate.o: translate.c cpu.h $(OPC_H) - -translate-all.o: translate-all.c cpu.h $(OPC_H) - -tcg/tcg.o: cpu.h $(OPC_H) - -tcg/tcg-dyngen.o: $(OPC_H) - -tcg/tcg-runtime.o: $(OPC_H) - -op.h: op.o $(DYNGEN) - $(DYNGEN) -o $@ $< - -dyngen-opc.h: op.o $(DYNGEN) - $(DYNGEN) -c -o $@ $< +translate.o: translate.c cpu.h -gen-op.h: op.o $(DYNGEN) - $(DYNGEN) -g -o $@ $< +translate-all.o: translate-all.c cpu.h -op.o: op.c - $(CC) $(OP_CFLAGS) $(CPPFLAGS) $(I386_CFLAGS) -c -o $@ $< +tcg/tcg.o: cpu.h machine.o: machine.c $(CC) $(OP_CFLAGS) $(CPPFLAGS) -c -o $@ $< @@ -299,7 +274,7 @@ machine.o: machine.c op_helper.o: op_helper.c $(CC) $(HELPER_CFLAGS) $(CPPFLAGS) $(CFLAGS) $(I386_CFLAGS) -c -o $@ $< -cpu-exec.o: cpu-exec.c $(OPC_H) +cpu-exec.o: cpu-exec.c $(CC) $(HELPER_CFLAGS) $(CPPFLAGS) $(CFLAGS) -c -o $@ $< ######################################################### @@ -807,7 +782,7 @@ endif $(CC) $(CPPFLAGS) -c -o $@ $< clean: - rm -f *.o *.a *~ $(PROGS) gen-op.h dyngen-opc.h op.h nwfpe/*.o fpu/*.o + rm -f *.o *.a *~ $(PROGS) nwfpe/*.o fpu/*.o rm -f *.d */*.d tcg/*.o install: all diff --git a/dyngen.c b/dyngen.c deleted file mode 100644 index 68f23ad..0000000 --- a/dyngen.c +++ /dev/null @@ -1,2794 +0,0 @@ -/* - * Generic Dynamic compiler generator - * - * Copyright (c) 2003 Fabrice Bellard - * - * The COFF object format support was extracted from Kazu's QEMU port - * to Win32. - * - * Mach-O Support by Matt Reda and Pierre d'Herbemont - * - * This program 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 this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <stdarg.h> -#include <inttypes.h> -#include <unistd.h> -#include <fcntl.h> - -#include "config-host.h" - -/* NOTE: we test CONFIG_WIN32 instead of _WIN32 to enabled cross - compilation */ -#if defined(CONFIG_WIN32) -#define CONFIG_FORMAT_COFF -#elif defined(CONFIG_DARWIN) -#define CONFIG_FORMAT_MACH -#else -#define CONFIG_FORMAT_ELF -#endif - -#ifdef CONFIG_FORMAT_ELF - -/* elf format definitions. We use these macros to test the CPU to - allow cross compilation (this tool must be ran on the build - platform) */ -#if defined(HOST_I386) - -#define ELF_CLASS ELFCLASS32 -#define ELF_ARCH EM_386 -#define elf_check_arch(x) ( ((x) == EM_386) || ((x) == EM_486) ) -#undef ELF_USES_RELOCA - -#elif defined(HOST_X86_64) - -#define ELF_CLASS ELFCLASS64 -#define ELF_ARCH EM_X86_64 -#define elf_check_arch(x) ((x) == EM_X86_64) -#define ELF_USES_RELOCA - -#elif defined(HOST_PPC) - -#define ELF_CLASS ELFCLASS32 -#define ELF_ARCH EM_PPC -#define elf_check_arch(x) ((x) == EM_PPC) -#define ELF_USES_RELOCA - -#elif defined(HOST_PPC64) - -#define ELF_CLASS ELFCLASS64 -#define ELF_ARCH EM_PPC64 -#define elf_check_arch(x) ((x) == EM_PPC64) -#define ELF_USES_RELOCA - -#elif defined(HOST_S390) - -#define ELF_CLASS ELFCLASS32 -#define ELF_ARCH EM_S390 -#define elf_check_arch(x) ((x) == EM_S390) -#define ELF_USES_RELOCA - -#elif defined(HOST_ALPHA) - -#define ELF_CLASS ELFCLASS64 -#define ELF_ARCH EM_ALPHA -#define elf_check_arch(x) ((x) == EM_ALPHA) -#define ELF_USES_RELOCA - -#elif defined(HOST_IA64) - -#define ELF_CLASS ELFCLASS64 -#define ELF_ARCH EM_IA_64 -#define elf_check_arch(x) ((x) == EM_IA_64) -#define ELF_USES_RELOCA - -#elif defined(HOST_SPARC) - -#define ELF_CLASS ELFCLASS32 -#define ELF_ARCH EM_SPARC -#define elf_check_arch(x) ((x) == EM_SPARC || (x) == EM_SPARC32PLUS) -#define ELF_USES_RELOCA - -#elif defined(HOST_SPARC64) - -#define ELF_CLASS ELFCLASS64 -#define ELF_ARCH EM_SPARCV9 -#define elf_check_arch(x) ((x) == EM_SPARCV9) -#define ELF_USES_RELOCA - -#elif defined(HOST_ARM) - -#define ELF_CLASS ELFCLASS32 -#define ELF_ARCH EM_ARM -#define elf_check_arch(x) ((x) == EM_ARM) -#define ELF_USES_RELOC - -#elif defined(HOST_M68K) - -#define ELF_CLASS ELFCLASS32 -#define ELF_ARCH EM_68K -#define elf_check_arch(x) ((x) == EM_68K) -#define ELF_USES_RELOCA - -#elif defined(HOST_HPPA) - -#define ELF_CLASS ELFCLASS32 -#define ELF_ARCH EM_PARISC -#define elf_check_arch(x) ((x) == EM_PARISC) -#define ELF_USES_RELOCA - -#elif defined(HOST_MIPS) - -#define ELF_CLASS ELFCLASS32 -#define ELF_ARCH EM_MIPS -#define elf_check_arch(x) ((x) == EM_MIPS) -#define ELF_USES_RELOC - -#elif defined(HOST_MIPS64) - -/* Assume n32 ABI here, which is ELF32. */ -#define ELF_CLASS ELFCLASS32 -#define ELF_ARCH EM_MIPS -#define elf_check_arch(x) ((x) == EM_MIPS) -#define ELF_USES_RELOCA - -#else -#error unsupported CPU - please update the code -#endif - -#include "elf.h" - -#if ELF_CLASS == ELFCLASS32 -typedef int32_t host_long; -typedef uint32_t host_ulong; -#define swabls(x) swab32s(x) -#define swablss(x) swab32ss(x) -#else -typedef int64_t host_long; -typedef uint64_t host_ulong; -#define swabls(x) swab64s(x) -#define swablss(x) swab64ss(x) -#endif - -#ifdef ELF_USES_RELOCA -#define SHT_RELOC SHT_RELA -#else -#define SHT_RELOC SHT_REL -#endif - -#define EXE_RELOC ELF_RELOC -#define EXE_SYM ElfW(Sym) - -#endif /* CONFIG_FORMAT_ELF */ - -#ifdef CONFIG_FORMAT_COFF - -typedef int32_t host_long; -typedef uint32_t host_ulong; - -#include "a.out.h" - -#define FILENAMELEN 256 - -typedef struct coff_sym { - struct external_syment *st_syment; - char st_name[FILENAMELEN]; - uint32_t st_value; - int st_size; - uint8_t st_type; - uint8_t st_shndx; -} coff_Sym; - -typedef struct coff_rel { - struct external_reloc *r_reloc; - int r_offset; - uint8_t r_type; -} coff_Rel; - -#define EXE_RELOC struct coff_rel -#define EXE_SYM struct coff_sym - -#endif /* CONFIG_FORMAT_COFF */ - -#ifdef CONFIG_FORMAT_MACH - -#include <mach-o/loader.h> -#include <mach-o/nlist.h> -#include <mach-o/reloc.h> -#include <mach-o/ppc/reloc.h> - -# define check_mach_header(x) (x.magic == MH_MAGIC) -typedef int32_t host_long; -typedef uint32_t host_ulong; - -struct nlist_extended -{ - union { - char *n_name; - long n_strx; - } n_un; - unsigned char n_type; - unsigned char n_sect; - short st_desc; - unsigned long st_value; - unsigned long st_size; -}; - -#define EXE_RELOC struct relocation_info -#define EXE_SYM struct nlist_extended - -#endif /* CONFIG_FORMAT_MACH */ - -#include "bswap.h" - -enum { - OUT_GEN_OP, - OUT_CODE, - OUT_INDEX_OP, -}; - -/* all dynamically generated functions begin with this code */ -#define OP_PREFIX "op_" - -int do_swap; - -static void __attribute__((noreturn)) __attribute__((format (printf, 1, 2))) error(const char *fmt, ...) -{ - va_list ap; - va_start(ap, fmt); - fprintf(stderr, "dyngen: "); - vfprintf(stderr, fmt, ap); - fprintf(stderr, "\n"); - va_end(ap); - exit(1); -} - -static void *load_data(int fd, long offset, unsigned int size) -{ - char *data; - - data = malloc(size); - if (!data) - return NULL; - lseek(fd, offset, SEEK_SET); - if (read(fd, data, size) != size) { - free(data); - return NULL; - } - return data; -} - -static int strstart(const char *str, const char *val, const char **ptr) -{ - const char *p, *q; - p = str; - q = val; - while (*q != '\0') { - if (*p != *q) - return 0; - p++; - q++; - } - if (ptr) - *ptr = p; - return 1; -} - -static void pstrcpy(char *buf, int buf_size, const char *str) -{ - int c; - char *q = buf; - - if (buf_size <= 0) - return; - - for(;;) { - c = *str++; - if (c == 0 || q >= buf + buf_size - 1) - break; - *q++ = c; - } - *q = '\0'; -} - -static void swab16s(uint16_t *p) -{ - *p = bswap16(*p); -} - -static void swab32s(uint32_t *p) -{ - *p = bswap32(*p); -} - -static void swab32ss(int32_t *p) -{ - *p = bswap32(*p); -} - -static void swab64s(uint64_t *p) -{ - *p = bswap64(*p); -} - -static void swab64ss(int64_t *p) -{ - *p = bswap64(*p); -} - -static uint16_t get16(uint16_t *p) -{ - uint16_t val; - val = *p; - if (do_swap) - val = bswap16(val); - return val; -} - -static uint32_t get32(uint32_t *p) -{ - uint32_t val; - val = *p; - if (do_swap) - val = bswap32(val); - return val; -} - -static void put16(uint16_t *p, uint16_t val) -{ - if (do_swap) - val = bswap16(val); - *p = val; -} - -static void put32(uint32_t *p, uint32_t val) -{ - if (do_swap) - val = bswap32(val); - *p = val; -} - -/* executable information */ -EXE_SYM *symtab; -int nb_syms; -int text_shndx; -uint8_t *text; -EXE_RELOC *relocs; -int nb_relocs; - -#ifdef CONFIG_FORMAT_ELF - -/* ELF file info */ -struct elf_shdr *shdr; -uint8_t **sdata; -struct elfhdr ehdr; -char *strtab; - -static int elf_must_swap(struct elfhdr *h) -{ - union { - uint32_t i; - uint8_t b[4]; - } swaptest; - - swaptest.i = 1; - return (h->e_ident[EI_DATA] == ELFDATA2MSB) != - (swaptest.b[0] == 0); -} - -static void elf_swap_ehdr(struct elfhdr *h) -{ - swab16s(&h->e_type); /* Object file type */ - swab16s(&h-> e_machine); /* Architecture */ - swab32s(&h-> e_version); /* Object file version */ - swabls(&h-> e_entry); /* Entry point virtual address */ - swabls(&h-> e_phoff); /* Program header table file offset */ - swabls(&h-> e_shoff); /* Section header table file offset */ - swab32s(&h-> e_flags); /* Processor-specific flags */ - swab16s(&h-> e_ehsize); /* ELF header size in bytes */ - swab16s(&h-> e_phentsize); /* Program header table entry size */ - swab16s(&h-> e_phnum); /* Program header table entry count */ - swab16s(&h-> e_shentsize); /* Section header table entry size */ - swab16s(&h-> e_shnum); /* Section header table entry count */ - swab16s(&h-> e_shstrndx); /* Section header string table index */ -} - -static void elf_swap_shdr(struct elf_shdr *h) -{ - swab32s(&h-> sh_name); /* Section name (string tbl index) */ - swab32s(&h-> sh_type); /* Section type */ - swabls(&h-> sh_flags); /* Section flags */ - swabls(&h-> sh_addr); /* Section virtual addr at execution */ - swabls(&h-> sh_offset); /* Section file offset */ - swabls(&h-> sh_size); /* Section size in bytes */ - swab32s(&h-> sh_link); /* Link to another section */ - swab32s(&h-> sh_info); /* Additional section information */ - swabls(&h-> sh_addralign); /* Section alignment */ - swabls(&h-> sh_entsize); /* Entry size if section holds table */ -} - -static void elf_swap_phdr(struct elf_phdr *h) -{ - swab32s(&h->p_type); /* Segment type */ - swabls(&h->p_offset); /* Segment file offset */ - swabls(&h->p_vaddr); /* Segment virtual address */ - swabls(&h->p_paddr); /* Segment physical address */ - swabls(&h->p_filesz); /* Segment size in file */ - swabls(&h->p_memsz); /* Segment size in memory */ - swab32s(&h->p_flags); /* Segment flags */ - swabls(&h->p_align); /* Segment alignment */ -} - -static void elf_swap_rel(ELF_RELOC *rel) -{ - swabls(&rel->r_offset); - swabls(&rel->r_info); -#ifdef ELF_USES_RELOCA - swablss(&rel->r_addend); -#endif -} - -static struct elf_shdr *find_elf_section(struct elf_shdr *shdr, int shnum, - const char *shstr, const char *name) -{ - int i; - const char *shname; - struct elf_shdr *sec; - - for(i = 0; i < shnum; i++) { - sec = &shdr[i]; - if (!sec->sh_name) - continue; - shname = shstr + sec->sh_name; - if (!strcmp(shname, name)) - return sec; - } - return NULL; -} - -static int find_reloc(int sh_index) -{ - struct elf_shdr *sec; - int i; - - for(i = 0; i < ehdr.e_shnum; i++) { - sec = &shdr[i]; - if (sec->sh_type == SHT_RELOC && sec->sh_info == sh_index) - return i; - } - return 0; -} - -static host_ulong get_rel_offset(EXE_RELOC *rel) -{ - return rel->r_offset; -} - -static char *get_rel_sym_name(EXE_RELOC *rel) -{ - return strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name; -} - -static char *get_sym_name(EXE_SYM *sym) -{ - return strtab + sym->st_name; -} - -/* load an elf object file */ -static int load_object(const char *filename) -{ - int fd; - struct elf_shdr *sec, *symtab_sec, *strtab_sec, *text_sec; - int i, j; - ElfW(Sym) *sym; - char *shstr; - ELF_RELOC *rel; - - fd = open(filename, O_RDONLY); - if (fd < 0) - error("can't open file '%s'", filename); - - /* Read ELF header. */ - if (read(fd, &ehdr, sizeof (ehdr)) != sizeof (ehdr)) - error("unable to read file header"); - - /* Check ELF identification. */ - if (ehdr.e_ident[EI_MAG0] != ELFMAG0 - || ehdr.e_ident[EI_MAG1] != ELFMAG1 - || ehdr.e_ident[EI_MAG2] != ELFMAG2 - || ehdr.e_ident[EI_MAG3] != ELFMAG3 - || ehdr.e_ident[EI_VERSION] != EV_CURRENT) { - error("bad ELF header"); - } - - do_swap = elf_must_swap(&ehdr); - if (do_swap) - elf_swap_ehdr(&ehdr); - if (ehdr.e_ident[EI_CLASS] != ELF_CLASS) - error("Unsupported ELF class"); - if (ehdr.e_type != ET_REL) - error("ELF object file expected"); - if (ehdr.e_version != EV_CURRENT) - error("Invalid ELF version"); - if (!elf_check_arch(ehdr.e_machine)) - error("Unsupported CPU (e_machine=%d)", ehdr.e_machine); - - /* read section headers */ - shdr = load_data(fd, ehdr.e_shoff, ehdr.e_shnum * sizeof(struct elf_shdr)); - if (do_swap) { - for(i = 0; i < ehdr.e_shnum; i++) { - elf_swap_shdr(&shdr[i]); - } - } - - /* read all section data */ - sdata = malloc(sizeof(void *) * ehdr.e_shnum); - memset(sdata, 0, sizeof(void *) * ehdr.e_shnum); - - for(i = 0;i < ehdr.e_shnum; i++) { - sec = &shdr[i]; - if (sec->sh_type != SHT_NOBITS) - sdata[i] = load_data(fd, sec->sh_offset, sec->sh_size); - } - - sec = &shdr[ehdr.e_shstrndx]; - shstr = (char *)sdata[ehdr.e_shstrndx]; - - /* swap relocations */ - for(i = 0; i < ehdr.e_shnum; i++) { - sec = &shdr[i]; - if (sec->sh_type == SHT_RELOC) { - nb_relocs = sec->sh_size / sec->sh_entsize; - if (do_swap) { - for(j = 0, rel = (ELF_RELOC *)sdata[i]; j < nb_relocs; j++, rel++) - elf_swap_rel(rel); - } - } - } - /* text section */ - - text_sec = find_elf_section(shdr, ehdr.e_shnum, shstr, ".text"); - if (!text_sec) - error("could not find .text section"); - text_shndx = text_sec - shdr; - text = sdata[text_shndx]; - - /* find text relocations, if any */ - relocs = NULL; - nb_relocs = 0; - i = find_reloc(text_shndx); - if (i != 0) { - relocs = (ELF_RELOC *)sdata[i]; - nb_relocs = shdr[i].sh_size / shdr[i].sh_entsize; - } - - symtab_sec = find_elf_section(shdr, ehdr.e_shnum, shstr, ".symtab"); - if (!symtab_sec) - error("could not find .symtab section"); - strtab_sec = &shdr[symtab_sec->sh_link]; - - symtab = (ElfW(Sym) *)sdata[symtab_sec - shdr]; - strtab = (char *)sdata[symtab_sec->sh_link]; - - nb_syms = symtab_sec->sh_size / sizeof(ElfW(Sym)); - if (do_swap) { - for(i = 0, sym = symtab; i < nb_syms; i++, sym++) { - swab32s(&sym->st_name); - swabls(&sym->st_value); - swabls(&sym->st_size); - swab16s(&sym->st_shndx); - } - } - close(fd); - return 0; -} - -#endif /* CONFIG_FORMAT_ELF */ - -#ifdef CONFIG_FORMAT_COFF - -/* COFF file info */ -struct external_scnhdr *shdr; -uint8_t **sdata; -struct external_filehdr fhdr; -struct external_syment *coff_symtab; -char *strtab; -int coff_text_shndx, coff_data_shndx; - -int data_shndx; - -#define STRTAB_SIZE 4 - -#define DIR32 0x06 -#define DISP32 0x14 - -#define T_FUNCTION 0x20 -#define C_EXTERNAL 2 - -void sym_ent_name(struct external_syment *ext_sym, EXE_SYM *sym) -{ - char *q; - int c, i, len; - - if (ext_sym->e.e.e_zeroes != 0) { - q = sym->st_name; - for(i = 0; i < 8; i++) { - c = ext_sym->e.e_name[i]; - if (c == '\0') - break; - *q++ = c; - } - *q = '\0'; - } else { - pstrcpy(sym->st_name, sizeof(sym->st_name), strtab + ext_sym->e.e.e_offset); - } - - /* now convert the name to a C name (suppress the leading '_') */ - if (sym->st_name[0] == '_') { - len = strlen(sym->st_name); - memmove(sym->st_name, sym->st_name + 1, len - 1); - sym->st_name[len - 1] = '\0'; - } -} - -char *name_for_dotdata(struct coff_rel *rel) -{ - int i; - struct coff_sym *sym; - uint32_t text_data; - - text_data = *(uint32_t *)(text + rel->r_offset); - - for (i = 0, sym = symtab; i < nb_syms; i++, sym++) { - if (sym->st_syment->e_scnum == data_shndx && - text_data >= sym->st_value && - text_data < sym->st_value + sym->st_size) { - - return sym->st_name; - - } - } - return NULL; -} - -static char *get_sym_name(EXE_SYM *sym) -{ - return sym->st_name; -} - -static char *get_rel_sym_name(EXE_RELOC *rel) -{ - char *name; - name = get_sym_name(symtab + *(uint32_t *)(rel->r_reloc->r_symndx)); - if (!strcmp(name, ".data")) - name = name_for_dotdata(rel); - if (name[0] == '.') - return NULL; - return name; -} - -static host_ulong get_rel_offset(EXE_RELOC *rel) -{ - return rel->r_offset; -} - -struct external_scnhdr *find_coff_section(struct external_scnhdr *shdr, int shnum, const char *name) -{ - int i; - const char *shname; - struct external_scnhdr *sec; - - for(i = 0; i < shnum; i++) { - sec = &shdr[i]; - if (!sec->s_name) - continue; - shname = sec->s_name; - if (!strcmp(shname, name)) - return sec; - } - return NULL; -} - -/* load a coff object file */ -int load_object(const char *filename) -{ - int fd; - struct external_scnhdr *sec, *text_sec, *data_sec; - int i; - struct external_syment *ext_sym; - struct external_reloc *coff_relocs; - struct external_reloc *ext_rel; - uint32_t *n_strtab; - EXE_SYM *sym; - EXE_RELOC *rel; - const char *p; - int aux_size, j; - - fd = open(filename, O_RDONLY -#ifdef _WIN32 - | O_BINARY -#endif - ); - if (fd < 0) - error("can't open file '%s'", filename); - - /* Read COFF header. */ - if (read(fd, &fhdr, sizeof (fhdr)) != sizeof (fhdr)) - error("unable to read file header"); - - /* Check COFF identification. */ - if (fhdr.f_magic != I386MAGIC) { - error("bad COFF header"); - } - do_swap = 0; - - /* read section headers */ - shdr = load_data(fd, sizeof(struct external_filehdr) + fhdr.f_opthdr, fhdr.f_nscns * sizeof(struct external_scnhdr)); - - /* read all section data */ - sdata = malloc(sizeof(void *) * fhdr.f_nscns); - memset(sdata, 0, sizeof(void *) * fhdr.f_nscns); - - for(i = 0;i < fhdr.f_nscns; i++) { - sec = &shdr[i]; - if (!strstart(sec->s_name, ".bss", &p)) - sdata[i] = load_data(fd, sec->s_scnptr, sec->s_size); - } - - - /* text section */ - text_sec = find_coff_section(shdr, fhdr.f_nscns, ".text"); - if (!text_sec) - error("could not find .text section"); - coff_text_shndx = text_sec - shdr; - text = sdata[coff_text_shndx]; - - /* data section */ - data_sec = find_coff_section(shdr, fhdr.f_nscns, ".data"); - if (!data_sec) - error("could not find .data section"); - coff_data_shndx = data_sec - shdr; - - coff_symtab = load_data(fd, fhdr.f_symptr, fhdr.f_nsyms*SYMESZ); - for (i = 0, ext_sym = coff_symtab; i < nb_syms; i++, ext_sym++) { - for(i=0;i<8;i++) - printf(" %02x", ((uint8_t *)ext_sym->e.e_name)[i]); - printf("\n"); - } - - - n_strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), STRTAB_SIZE); - strtab = load_data(fd, (fhdr.f_symptr + fhdr.f_nsyms*SYMESZ), *n_strtab); - - nb_syms = fhdr.f_nsyms; - - for (i = 0, ext_sym = coff_symtab; i < nb_syms; i++, ext_sym++) { - if (strstart(ext_sym->e.e_name, ".text", NULL)) - text_shndx = ext_sym->e_scnum; - if (strstart(ext_sym->e.e_name, ".data", NULL)) - data_shndx = ext_sym->e_scnum; - } - - /* set coff symbol */ - symtab = malloc(sizeof(struct coff_sym) * nb_syms); - - for (i = 0, ext_sym = coff_symtab, sym = symtab; i < nb_syms; i++, ext_sym++, sym++) { - memset(sym, 0, sizeof(*sym)); - sym->st_syment = ext_sym; - sym_ent_name(ext_sym, sym); - sym->st_value = ext_sym->e_value; - - aux_size = *(int8_t *)ext_sym->e_numaux; - if (ext_sym->e_scnum == text_shndx && ext_sym->e_type == T_FUNCTION) { - for (j = aux_size + 1; j < nb_syms - i; j++) { - if ((ext_sym + j)->e_scnum == text_shndx && - (ext_sym + j)->e_type == T_FUNCTION ){ - sym->st_size = (ext_sym + j)->e_value - ext_sym->e_value; - break; - } else if (j == nb_syms - i - 1) { - sec = &shdr[coff_text_shndx]; - sym->st_size = sec->s_size - ext_sym->e_value; - break; - } - } - } else if (ext_sym->e_scnum == data_shndx && *(uint8_t *)ext_sym->e_sclass == C_EXTERNAL) { - for (j = aux_size + 1; j < nb_syms - i; j++) { - if ((ext_sym + j)->e_scnum == data_shndx) { - sym->st_size = (ext_sym + j)->e_value - ext_sym->e_value; - break; - } else if (j == nb_syms - i - 1) { - sec = &shdr[coff_data_shndx]; - sym->st_size = sec->s_size - ext_sym->e_value; - break; - } - } - } else { - sym->st_size = 0; - } - - sym->st_type = ext_sym->e_type; - sym->st_shndx = ext_sym->e_scnum; - } - - - /* find text relocations, if any */ - sec = &shdr[coff_text_shndx]; - coff_relocs = load_data(fd, sec->s_relptr, sec->s_nreloc*RELSZ); - nb_relocs = sec->s_nreloc; - - /* set coff relocation */ - relocs = malloc(sizeof(struct coff_rel) * nb_relocs); - for (i = 0, ext_rel = coff_relocs, rel = relocs; i < nb_relocs; - i++, ext_rel++, rel++) { - memset(rel, 0, sizeof(*rel)); - rel->r_reloc = ext_rel; - rel->r_offset = *(uint32_t *)ext_rel->r_vaddr; - rel->r_type = *(uint16_t *)ext_rel->r_type; - } - return 0; -} - -#endif /* CONFIG_FORMAT_COFF */ - -#ifdef CONFIG_FORMAT_MACH - -/* File Header */ -struct mach_header mach_hdr; - -/* commands */ -struct segment_command *segment = 0; -struct dysymtab_command *dysymtabcmd = 0; -struct symtab_command *symtabcmd = 0; - -/* section */ -struct section *section_hdr; -struct section *text_sec_hdr; -uint8_t **sdata; - -/* relocs */ -struct relocation_info *relocs; - -/* symbols */ -EXE_SYM *symtab; -struct nlist *symtab_std; -char *strtab; - -/* indirect symbols */ -uint32_t *tocdylib; - -/* Utility functions */ - -static inline char *find_str_by_index(int index) -{ - return strtab+index; -} - -/* Used by dyngen common code */ -static char *get_sym_name(EXE_SYM *sym) -{ - char *name = find_str_by_index(sym->n_un.n_strx); - - if ( sym->n_type & N_STAB ) /* Debug symbols are ignored */ - return "debug"; - - if(!name) - return name; - if(name[0]=='_') - return name + 1; - else - return name; -} - -/* find a section index given its segname, sectname */ -static int find_mach_sec_index(struct section *section_hdr, int shnum, const char *segname, - const char *sectname) -{ - int i; - struct section *sec = section_hdr; - - for(i = 0; i < shnum; i++, sec++) { - if (!sec->segname || !sec->sectname) - continue; - if (!strcmp(sec->sectname, sectname) && !strcmp(sec->segname, segname)) - return i; - } - return -1; -} - -/* find a section header given its segname, sectname */ -struct section *find_mach_sec_hdr(struct section *section_hdr, int shnum, const char *segname, - const char *sectname) -{ - int index = find_mach_sec_index(section_hdr, shnum, segname, sectname); - if(index == -1) - return NULL; - return section_hdr+index; -} - - -static inline void fetch_next_pair_value(struct relocation_info * rel, unsigned int *value) -{ - struct scattered_relocation_info * scarel; - - if(R_SCATTERED & rel->r_address) { - scarel = (struct scattered_relocation_info*)rel; - if(scarel->r_type != PPC_RELOC_PAIR) - error("fetch_next_pair_value: looking for a pair which was not found (1)"); - *value = scarel->r_value; - } else { - if(rel->r_type != PPC_RELOC_PAIR) - error("fetch_next_pair_value: looking for a pair which was not found (2)"); - *value = rel->r_address; - } -} - -/* find a sym name given its value, in a section number */ -static const char * find_sym_with_value_and_sec_number( int value, int sectnum, int * offset ) -{ - int i, ret = -1; - - for( i = 0 ; i < nb_syms; i++ ) - { - if( !(symtab[i].n_type & N_STAB) && (symtab[i].n_type & N_SECT) && - (symtab[i].n_sect == sectnum) && (symtab[i].st_value <= value) ) - { - if( (ret<0) || (symtab[i].st_value >= symtab[ret].st_value) ) - ret = i; - } - } - if( ret < 0 ) { - *offset = 0; - return 0; - } else { - *offset = value - symtab[ret].st_value; - return get_sym_name(&symtab[ret]); - } -} - -/* - * Find symbol name given a (virtual) address, and a section which is of type - * S_NON_LAZY_SYMBOL_POINTERS or S_LAZY_SYMBOL_POINTERS or S_SYMBOL_STUBS - */ -static const char * find_reloc_name_in_sec_ptr(int address, struct section * sec_hdr) -{ - unsigned int tocindex, symindex, size; - const char *name = 0; - - /* Sanity check */ - if(!( address >= sec_hdr->addr && address < (sec_hdr->addr + sec_hdr->size) ) ) - return (char*)0; - - if( sec_hdr->flags & S_SYMBOL_STUBS ){ - size = sec_hdr->reserved2; - if(size == 0) - error("size = 0"); - - } - else if( sec_hdr->flags & S_LAZY_SYMBOL_POINTERS || - sec_hdr->flags & S_NON_LAZY_SYMBOL_POINTERS) - size = sizeof(unsigned long); - else - return 0; - - /* Compute our index in toc */ - tocindex = (address - sec_hdr->addr)/size; - symindex = tocdylib[sec_hdr->reserved1 + tocindex]; - - name = get_sym_name(&symtab[symindex]); - - return name; -} - -static const char * find_reloc_name_given_its_address(int address) -{ - unsigned int i; - for(i = 0; i < segment->nsects ; i++) - { - const char * name = find_reloc_name_in_sec_ptr(address, §ion_hdr[i]); - if((long)name != -1) - return name; - } - return 0; -} - -static const char * get_reloc_name(EXE_RELOC * rel, int * sslide) -{ - char * name = 0; - struct scattered_relocation_info * sca_rel = (struct scattered_relocation_info*)rel; - int sectnum = rel->r_symbolnum; - int sectoffset; - int other_half=0; - - /* init the slide value */ - *sslide = 0; - - if(R_SCATTERED & rel->r_address) - return (char *)find_reloc_name_given_its_address(sca_rel->r_value); - - if(rel->r_extern) - { - /* ignore debug sym */ - if ( symtab[rel->r_symbolnum].n_type & N_STAB ) - return 0; - return get_sym_name(&symtab[rel->r_symbolnum]); - } - - /* Intruction contains an offset to the symbols pointed to, in the rel->r_symbolnum section */ - sectoffset = *(uint32_t *)(text + rel->r_address) & 0xffff; - - if(sectnum==0xffffff) - return 0; - - /* Sanity Check */ - if(sectnum > segment->nsects) - error("sectnum > segment->nsects"); - - switch(rel->r_type) - { - case PPC_RELOC_LO16: fetch_next_pair_value(rel+1, &other_half); sectoffset |= (other_half << 16); - break; - case PPC_RELOC_HI16: fetch_next_pair_value(rel+1, &other_half); sectoffset = (sectoffset << 16) | (uint16_t)(other_half & 0xffff); - break; - case PPC_RELOC_HA16: fetch_next_pair_value(rel+1, &other_half); sectoffset = (sectoffset << 16) + (int16_t)(other_half & 0xffff); - break; - case PPC_RELOC_BR24: - sectoffset = ( *(uint32_t *)(text + rel->r_address) & 0x03fffffc ); - if (sectoffset & 0x02000000) sectoffset |= 0xfc000000; - break; - default: - error("switch(rel->type) not found"); - } - - if(rel->r_pcrel) - sectoffset += rel->r_address; - - if (rel->r_type == PPC_RELOC_BR24) - name = (char *)find_reloc_name_in_sec_ptr((int)sectoffset, §ion_hdr[sectnum-1]); - - /* search it in the full symbol list, if not found */ - if(!name) - name = (char *)find_sym_with_value_and_sec_number(sectoffset, sectnum, sslide); - - return name; -} - -/* Used by dyngen common code */ -static const char * get_rel_sym_name(EXE_RELOC * rel) -{ - int sslide; - return get_reloc_name( rel, &sslide); -} - -/* Used by dyngen common code */ -static host_ulong get_rel_offset(EXE_RELOC *rel) -{ - struct scattered_relocation_info * sca_rel = (struct scattered_relocation_info*)rel; - if(R_SCATTERED & rel->r_address) - return sca_rel->r_address; - else - return rel->r_address; -} - -/* load a mach-o object file */ -int load_object(const char *filename) -{ - int fd; - unsigned int offset_to_segment = 0; - unsigned int offset_to_dysymtab = 0; - unsigned int offset_to_symtab = 0; - struct load_command lc; - unsigned int i, j; - EXE_SYM *sym; - struct nlist *syment; - - fd = open(filename, O_RDONLY); - if (fd < 0) - error("can't open file '%s'", filename); - - /* Read Mach header. */ - if (read(fd, &mach_hdr, sizeof (mach_hdr)) != sizeof (mach_hdr)) - error("unable to read file header"); - - /* Check Mach identification. */ - if (!check_mach_header(mach_hdr)) { - error("bad Mach header"); - } - - if (mach_hdr.cputype != CPU_TYPE_POWERPC) - error("Unsupported CPU"); - - if (mach_hdr.filetype != MH_OBJECT) - error("Unsupported Mach Object"); - - /* read segment headers */ - for(i=0, j=sizeof(mach_hdr); i<mach_hdr.ncmds ; i++) - { - if(read(fd, &lc, sizeof(struct load_command)) != sizeof(struct load_command)) - error("unable to read load_command"); - if(lc.cmd == LC_SEGMENT) - { - offset_to_segment = j; - lseek(fd, offset_to_segment, SEEK_SET); - segment = malloc(sizeof(struct segment_command)); - if(read(fd, segment, sizeof(struct segment_command)) != sizeof(struct segment_command)) - error("unable to read LC_SEGMENT"); - } - if(lc.cmd == LC_DYSYMTAB) - { - offset_to_dysymtab = j; - lseek(fd, offset_to_dysymtab, SEEK_SET); - dysymtabcmd = malloc(sizeof(struct dysymtab_command)); - if(read(fd, dysymtabcmd, sizeof(struct dysymtab_command)) != sizeof(struct dysymtab_command)) - error("unable to read LC_DYSYMTAB"); - } - if(lc.cmd == LC_SYMTAB) - { - offset_to_symtab = j; - lseek(fd, offset_to_symtab, SEEK_SET); - symtabcmd = malloc(sizeof(struct symtab_command)); - if(read(fd, symtabcmd, sizeof(struct symtab_command)) != sizeof(struct symtab_command)) - error("unable to read LC_SYMTAB"); - } - j+=lc.cmdsize; - - lseek(fd, j, SEEK_SET); - } - - if(!segment) - error("unable to find LC_SEGMENT"); - - /* read section headers */ - section_hdr = load_data(fd, offset_to_segment + sizeof(struct segment_command), segment->nsects * sizeof(struct section)); - - /* read all section data */ - sdata = (uint8_t **)malloc(sizeof(void *) * segment->nsects); - memset(sdata, 0, sizeof(void *) * segment->nsects); - - /* Load the data in section data */ - for(i = 0; i < segment->nsects; i++) { - sdata[i] = load_data(fd, section_hdr[i].offset, section_hdr[i].size); - } - - /* text section */ - text_sec_hdr = find_mach_sec_hdr(section_hdr, segment->nsects, SEG_TEXT, SECT_TEXT); - i = find_mach_sec_index(section_hdr, segment->nsects, SEG_TEXT, SECT_TEXT); - if (i == -1 || !text_sec_hdr) - error("could not find __TEXT,__text section"); - text = sdata[i]; - - /* Make sure dysym was loaded */ - if(!(int)dysymtabcmd) - error("could not find __DYSYMTAB segment"); - - /* read the table of content of the indirect sym */ - tocdylib = load_data( fd, dysymtabcmd->indirectsymoff, dysymtabcmd->nindirectsyms * sizeof(uint32_t) ); - - /* Make sure symtab was loaded */ - if(!(int)symtabcmd) - error("could not find __SYMTAB segment"); - nb_syms = symtabcmd->nsyms; - - symtab_std = load_data(fd, symtabcmd->symoff, symtabcmd->nsyms * sizeof(struct nlist)); - strtab = load_data(fd, symtabcmd->stroff, symtabcmd->strsize); - - symtab = malloc(sizeof(EXE_SYM) * nb_syms); - - /* Now transform the symtab, to an extended version, with the sym size, and the C name */ - for(i = 0, sym = symtab, syment = symtab_std; i < nb_syms; i++, sym++, syment++) { - struct nlist *sym_follow, *sym_next = 0; - unsigned int j; - memset(sym, 0, sizeof(*sym)); - - if ( syment->n_type & N_STAB ) /* Debug symbols are skipped */ - continue; - - memcpy(sym, syment, sizeof(*syment)); - - /* Find the following symbol in order to get the current symbol size */ - for(j = 0, sym_follow = symtab_std; j < nb_syms; j++, sym_follow++) { - if ( sym_follow->n_sect != 1 || sym_follow->n_type & N_STAB || !(sym_follow->n_value > sym->st_value)) - continue; - if(!sym_next) { - sym_next = sym_follow; - continue; - } - if(!(sym_next->n_value > sym_follow->n_value)) - continue; - sym_next = sym_follow; - } - if(sym_next) - sym->st_size = sym_next->n_value - sym->st_value; - else - sym->st_size = text_sec_hdr->size - sym->st_value; - } - - /* Find Reloc */ - relocs = load_data(fd, text_sec_hdr->reloff, text_sec_hdr->nreloc * sizeof(struct relocation_info)); - nb_relocs = text_sec_hdr->nreloc; - - close(fd); - return 0; -} - -#endif /* CONFIG_FORMAT_MACH */ - -/* return true if the expression is a label reference */ -static int get_reloc_expr(char *name, int name_size, const char *sym_name) -{ - const char *p; - - if (strstart(sym_name, "__op_param", &p)) { - snprintf(name, name_size, "param%s", p); - } else if (strstart(sym_name, "__op_gen_label", &p)) { - snprintf(name, name_size, "param%s", p); - return 1; - } else { -#if defined(HOST_SPARC) || defined(HOST_HPPA) - if (sym_name[0] == '.') - snprintf(name, name_size, - "(long)(&__dot_%s)", - sym_name + 1); - else -#endif - snprintf(name, name_size, "(long)(&%s)", sym_name); - } - return 0; -} - -#ifdef HOST_IA64 - -#define PLT_ENTRY_SIZE 16 /* 1 bundle containing "brl" */ - -struct plt_entry { - struct plt_entry *next; - const char *name; - unsigned long addend; -} *plt_list; - -static int -get_plt_index (const char *name, unsigned long addend) -{ - struct plt_entry *plt, *prev= NULL; - int index = 0; - - /* see if we already have an entry for this target: */ - for (plt = plt_list; plt; ++index, prev = plt, plt = plt->next) - if (strcmp(plt->name, name) == 0 && plt->addend == addend) - return index; - - /* nope; create a new PLT entry: */ - - plt = malloc(sizeof(*plt)); - if (!plt) { - perror("malloc"); - exit(1); - } - memset(plt, 0, sizeof(*plt)); - plt->name = strdup(name); - plt->addend = addend; - - /* append to plt-list: */ - if (prev) - prev->next = plt; - else - plt_list = plt; - return index; -} - -#endif - -#define MAX_ARGS 3 - -/* generate op code */ -static void gen_code(const char *name, host_ulong offset, host_ulong size, - FILE *outfile, int gen_switch) -{ - int copy_size = 0; - uint8_t *p_start, *p_end; - host_ulong start_offset; - int nb_args, i, n; - uint8_t args_present[MAX_ARGS]; - const char *sym_name, *p; - EXE_RELOC *rel; - - /* Compute exact size excluding prologue and epilogue instructions. - * Increment start_offset to skip epilogue instructions, then compute - * copy_size the indicate the size of the remaining instructions (in - * bytes). - */ - p_start = text + offset; - p_end = p_start + size; - start_offset = offset; -#if defined(HOST_I386) || defined(HOST_X86_64) -#ifdef CONFIG_FORMAT_COFF - { - uint8_t *p; - p = p_end - 1; - if (p == p_start) - error("empty code for %s", name); - while (*p != 0xc3) { - p--; - if (p <= p_start) - error("ret or jmp expected at the end of %s", name); - } - copy_size = p - p_start; - } -#else - { - int len; - len = p_end - p_start; - if (len == 0) - error("empty code for %s", name); - if (p_end[-1] == 0xc3) { - len--; - } else { - error("ret or jmp expected at the end of %s", name); - } - copy_size = len; - } -#endif -#elif defined(HOST_PPC) - { - uint8_t *p; - p = (void *)(p_end - 4); - if (p == p_start) - error("empty code for %s", name); - if (get32((uint32_t *)p) != 0x4e800020) - error("blr expected at the end of %s", name); - copy_size = p - p_start; - } -#elif defined(HOST_S390) - { - uint8_t *p; - p = (void *)(p_end - 2); - if (p == p_start) - error("empty code for %s", name); - if ((get16((uint16_t *)p) & 0xfff0) != 0x07f0) - error("br expected at the end of %s", name); - copy_size = p - p_start; - } -#elif defined(HOST_ALPHA) - { - uint8_t *p; - p = p_end - 4; -#if 0 - /* XXX: check why it occurs */ - if (p == p_start) - error("empty code for %s", name); -#endif - if (get32((uint32_t *)p) != 0x6bfa8001) - error("ret expected at the end of %s", name); - copy_size = p - p_start; - } -#elif defined(HOST_IA64) - { - uint8_t *p; - p = (void *)(p_end - 4); - if (p == p_start) - error("empty code for %s", name); - /* br.ret.sptk.many b0;; */ - /* 08 00 84 00 */ - if (get32((uint32_t *)p) != 0x00840008) - error("br.ret.sptk.many b0;; expected at the end of %s", name); - copy_size = p_end - p_start; - } -#elif defined(HOST_SPARC) - { -#define INSN_SAVE 0x9de3a000 -#define INSN_RET 0x81c7e008 -#define INSN_RETL 0x81c3e008 -#define INSN_RESTORE 0x81e80000 -#define INSN_RETURN 0x81cfe008 -#define INSN_NOP 0x01000000 -#define INSN_ADD_SP 0x9c03a000 // add %sp, nn, %sp -#define INSN_SUB_SP 0x9c23a000 // sub %sp, nn, %sp - - uint32_t start_insn, end_insn1, end_insn2; - uint8_t *p; - p = (void *)(p_end - 8); - if (p <= p_start) - error("empty code for %s", name); - start_insn = get32((uint32_t *)(p_start + 0x0)); - end_insn1 = get32((uint32_t *)(p + 0x0)); - end_insn2 = get32((uint32_t *)(p + 0x4)); - if (((start_insn & ~0x1fff) == INSN_SAVE) || - (start_insn & ~0x1fff) == INSN_ADD_SP) { - p_start += 0x4; - start_offset += 0x4; - if (end_insn1 == INSN_RET && end_insn2 == INSN_RESTORE) - /* SPARC v7: ret; restore; */ ; - else if (end_insn1 == INSN_RETURN && end_insn2 == INSN_NOP) - /* SPARC v9: return; nop; */ ; - else if (end_insn1 == INSN_RETL && (end_insn2 & ~0x1fff) == INSN_SUB_SP) - /* SPARC v7: retl; sub %sp, nn, %sp; */ ; - else - - error("ret; restore; not found at end of %s", name); - } else if (end_insn1 == INSN_RETL && end_insn2 == INSN_NOP) { - ; - } else { - error("No save at the beginning of %s", name); - } -#if 0 - /* Skip a preceeding nop, if present. */ - if (p > p_start) { - skip_insn = get32((uint32_t *)(p - 0x4)); - if (skip_insn == INSN_NOP) - p -= 4; - } -#endif - copy_size = p - p_start; - } -#elif defined(HOST_SPARC64) - { -#define INSN_SAVE 0x9de3a000 -#define INSN_RET 0x81c7e008 -#define INSN_RETL 0x81c3e008 -#define INSN_RESTORE 0x81e80000 -#define INSN_RETURN 0x81cfe008 -#define INSN_NOP 0x01000000 -#define INSN_ADD_SP 0x9c03a000 // add %sp, nn, %sp -#define INSN_SUB_SP 0x9c23a000 // sub %sp, nn, %sp - - uint32_t start_insn, end_insn1, end_insn2, skip_insn; - uint8_t *p; - p = (void *)(p_end - 8); -#if 0 - /* XXX: check why it occurs */ - if (p <= p_start) - error("empty code for %s", name); -#endif - start_insn = get32((uint32_t *)(p_start + 0x0)); - end_insn1 = get32((uint32_t *)(p + 0x0)); - end_insn2 = get32((uint32_t *)(p + 0x4)); - if (((start_insn & ~0x1fff) == INSN_SAVE) || - (start_insn & ~0x1fff) == INSN_ADD_SP) { - p_start += 0x4; - start_offset += 0x4; - if (end_insn1 == INSN_RET && end_insn2 == INSN_RESTORE) - /* SPARC v7: ret; restore; */ ; - else if (end_insn1 == INSN_RETURN && end_insn2 == INSN_NOP) - /* SPARC v9: return; nop; */ ; - else if (end_insn1 == INSN_RETL && (end_insn2 & ~0x1fff) == INSN_SUB_SP) - /* SPARC v7: retl; sub %sp, nn, %sp; */ ; - else - - error("ret; restore; not found at end of %s", name); - } else if (end_insn1 == INSN_RETL && end_insn2 == INSN_NOP) { - ; - } else { - error("No save at the beginning of %s", name); - } - -#if 0 - /* Skip a preceeding nop, if present. */ - if (p > p_start) { - skip_insn = get32((uint32_t *)(p - 0x4)); - if (skip_insn == 0x01000000) - p -= 4; - } -#endif - - copy_size = p - p_start; - } -#elif defined(HOST_M68K) - { - uint8_t *p; - p = (void *)(p_end - 2); - if (p == p_start) - error("empty code for %s", name); - // remove NOP's, probably added for alignment - while ((get16((uint16_t *)p) == 0x4e71) && - (p>p_start)) - p -= 2; - if (get16((uint16_t *)p) != 0x4e75) - error("rts expected at the end of %s", name); - copy_size = p - p_start; - } -#elif defined(HOST_HPPA) - { - uint8_t *p; - p = p_start; - while (p < p_end) { - uint32_t insn = get32((uint32_t *)p); - if (insn == 0x6bc23fd9 || /* stw rp,-14(sp) */ - insn == 0x08030241 || /* copy r3,r1 */ - insn == 0x081e0243 || /* copy sp,r3 */ - (insn & 0xffffc000) == 0x37de0000 || /* ldo x(sp),sp */ - (insn & 0xffffc000) == 0x6fc10000) /* stwm r1,x(sp) */ - p += 4; - else - break; - } - start_offset += p - p_start; - p_start = p; - p = p_end - 4; - - while (p > p_start) { - uint32_t insn = get32((uint32_t *)p); - if ((insn & 0xffffc000) == 0x347e0000 || /* ldo x(r3),sp */ - (insn & 0xffe0c000) == 0x4fc00000 || /* ldwm x(sp),rx */ - (insn & 0xffffc000) == 0x37de0000 || /* ldo x(sp),sp */ - insn == 0x48623fd9 || /* ldw -14(r3),rp */ - insn == 0xe840c000 || /* bv r0(rp) */ - insn == 0xe840c002) /* bv,n r0(rp) */ - p -= 4; - else - break; - } - p += 4; - if (p <= p_start) - error("empty code for %s", name); - - copy_size = p - p_start; - } -#elif defined(HOST_MIPS) || defined(HOST_MIPS64) - { -#define INSN_RETURN 0x03e00008 -#define INSN_NOP 0x00000000 - - uint8_t *p = p_end; - - if (p < (p_start + 0x8)) { - error("empty code for %s", name); - } else { - uint32_t end_insn1, end_insn2; - - p -= 0x8; - end_insn1 = get32((uint32_t *)(p + 0x0)); - end_insn2 = get32((uint32_t *)(p + 0x4)); - if (end_insn1 != INSN_RETURN && end_insn2 != INSN_NOP) - error("jr ra not found at end of %s", name); - } - copy_size = p - p_start; - } -#elif defined(HOST_ARM) - error("dyngen targets not supported on ARM"); -#elif defined(HOST_PPC64) - error("dyngen targets not supported on PPC64"); -#else -#error unsupported CPU -#endif - - /* compute the number of arguments by looking at the relocations */ - for(i = 0;i < MAX_ARGS; i++) - args_present[i] = 0; - - for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) { - host_ulong offset = get_rel_offset(rel); - if (offset >= start_offset && - offset < start_offset + (p_end - p_start)) { - sym_name = get_rel_sym_name(rel); - if(!sym_name) - continue; - if (strstart(sym_name, "__op_param", &p) || - strstart(sym_name, "__op_gen_label", &p)) { - n = strtoul(p, NULL, 10); - if (n > MAX_ARGS) - error("too many arguments in %s", name); - args_present[n - 1] = 1; - } - } - } - - nb_args = 0; - while (nb_args < MAX_ARGS && args_present[nb_args]) - nb_args++; - for(i = nb_args; i < MAX_ARGS; i++) { - if (args_present[i]) - error("inconsistent argument numbering in %s", name); - } - - if (gen_switch == 2) { - -#if defined(HOST_HPPA) - int op_size = copy_size; - int has_stubs = 0; - char relname[256]; - int type, is_label; - - for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) { - if (rel->r_offset >= start_offset && - rel->r_offset < start_offset + copy_size) { - sym_name = get_rel_sym_name(rel); - sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name; - is_label = get_reloc_expr(relname, sizeof(relname), sym_name); - type = ELF32_R_TYPE(rel->r_info); - - if (!is_label && type == R_PARISC_PCREL17F) { - has_stubs = 1; - op_size += 8; /* ldil and be,n instructions */ - } - } - } - - if (has_stubs) - op_size += 4; /* b,l,n instruction, to skip past the stubs */ - - fprintf(outfile, "DEF(%s, %d, %d)\n", name + 3, nb_args, op_size); -#else - fprintf(outfile, "DEF(%s, %d, %d)\n", name + 3, nb_args, copy_size); -#endif - - } else if (gen_switch == 1) { - - /* output C code */ - fprintf(outfile, "case INDEX_%s: {\n", name); - if (nb_args > 0) { - fprintf(outfile, " long "); - for(i = 0; i < nb_args; i++) { - if (i != 0) - fprintf(outfile, ", "); - fprintf(outfile, "param%d", i + 1); - } - fprintf(outfile, ";\n"); - } -#if defined(HOST_IA64) - fprintf(outfile, " extern char %s;\n", name); -#else - fprintf(outfile, " extern void %s();\n", name); -#endif - - for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) { - host_ulong offset = get_rel_offset(rel); - if (offset >= start_offset && - offset < start_offset + (p_end - p_start)) { - sym_name = get_rel_sym_name(rel); - if(!sym_name) - continue; - if (*sym_name && - !strstart(sym_name, "__op_param", NULL) && - !strstart(sym_name, "__op_jmp", NULL) && - !strstart(sym_name, "__op_gen_label", NULL)) { -#if defined(HOST_SPARC) || defined(HOST_HPPA) - if (sym_name[0] == '.') { - fprintf(outfile, - "extern char __dot_%s __asm__(\"%s\");\n", - sym_name+1, sym_name); - continue; - } -#endif -#if defined(__APPLE__) - /* Set __attribute((unused)) on darwin because we - want to avoid warning when we don't use the symbol. */ - fprintf(outfile, " extern char %s __attribute__((unused));\n", sym_name); -#elif defined(HOST_IA64) - if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B) - /* - * PCREL21 br.call targets generally - * are out of range and need to go - * through an "import stub". - */ - fprintf(outfile, " extern char %s;\n", - sym_name); -#else - fprintf(outfile, "extern char %s;\n", sym_name); -#endif - } - } - } - -#ifdef __hppa__ - fprintf(outfile, " memcpy(gen_code_ptr, (void *)((char *)__canonicalize_funcptr_for_compare(%s)+%d), %d);\n", - name, (int)(start_offset - offset), copy_size); -#else - fprintf(outfile, " memcpy(gen_code_ptr, (void *)((char *)&%s+%d), %d);\n", - name, (int)(start_offset - offset), copy_size); -#endif - - /* emit code offset information */ - { - EXE_SYM *sym; - const char *sym_name, *p; - host_ulong val; - int n; - - for(i = 0, sym = symtab; i < nb_syms; i++, sym++) { - sym_name = get_sym_name(sym); - if (strstart(sym_name, "__op_label", &p)) { - uint8_t *ptr; - unsigned long offset; - - /* test if the variable refers to a label inside - the code we are generating */ -#ifdef CONFIG_FORMAT_COFF - if (sym->st_shndx == text_shndx) { - ptr = sdata[coff_text_shndx]; - } else if (sym->st_shndx == data_shndx) { - ptr = sdata[coff_data_shndx]; - } else { - ptr = NULL; - } -#elif defined(CONFIG_FORMAT_MACH) - if(!sym->n_sect) - continue; - ptr = sdata[sym->n_sect-1]; -#else - ptr = sdata[sym->st_shndx]; -#endif - if (!ptr) - error("__op_labelN in invalid section"); - offset = sym->st_value; -#ifdef CONFIG_FORMAT_MACH - offset -= section_hdr[sym->n_sect-1].addr; -#endif - val = *(host_ulong *)(ptr + offset); -#ifdef ELF_USES_RELOCA - { - int reloc_shndx, nb_relocs1, j; - - /* try to find a matching relocation */ - reloc_shndx = find_reloc(sym->st_shndx); - if (reloc_shndx) { - nb_relocs1 = shdr[reloc_shndx].sh_size / - shdr[reloc_shndx].sh_entsize; - rel = (ELF_RELOC *)sdata[reloc_shndx]; - for(j = 0; j < nb_relocs1; j++) { - if (rel->r_offset == offset) { - val = rel->r_addend; - break; - } - rel++; - } - } - } -#endif - if (val >= start_offset && val <= start_offset + copy_size) { - n = strtol(p, NULL, 10); - fprintf(outfile, " label_offsets[%d] = %ld + (gen_code_ptr - gen_code_buf);\n", n, (long)(val - start_offset)); - } - } - } - } - - /* load parameters in variables */ - for(i = 0; i < nb_args; i++) { - fprintf(outfile, " param%d = *opparam_ptr++;\n", i + 1); - } - - /* patch relocations */ -#if defined(HOST_I386) - { - char relname[256]; - int type, is_label; - int addend; - int reloc_offset; - for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) { - if (rel->r_offset >= start_offset && - rel->r_offset < start_offset + copy_size) { - sym_name = get_rel_sym_name(rel); - if (!sym_name) - continue; - reloc_offset = rel->r_offset - start_offset; - if (strstart(sym_name, "__op_jmp", &p)) { - int n; - n = strtol(p, NULL, 10); - /* __op_jmp relocations are done at - runtime to do translated block - chaining: the offset of the instruction - needs to be stored */ - fprintf(outfile, " jmp_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\n", - n, reloc_offset); - continue; - } - - is_label = get_reloc_expr(relname, sizeof(relname), sym_name); - addend = get32((uint32_t *)(text + rel->r_offset)); -#ifdef CONFIG_FORMAT_ELF - type = ELF32_R_TYPE(rel->r_info); - if (is_label) { - switch(type) { - case R_386_32: - case R_386_PC32: - fprintf(outfile, " tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n", - reloc_offset, type, relname, addend); - break; - default: - error("unsupported i386 relocation (%d)", type); - } - } else { - switch(type) { - case R_386_32: - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n", - reloc_offset, relname, addend); - break; - case R_386_PC32: - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d;\n", - reloc_offset, relname, reloc_offset, addend); - break; - default: - error("unsupported i386 relocation (%d)", type); - } - } -#elif defined(CONFIG_FORMAT_COFF) - { - char *temp_name; - int j; - EXE_SYM *sym; - temp_name = get_sym_name(symtab + *(uint32_t *)(rel->r_reloc->r_symndx)); - if (!strcmp(temp_name, ".data")) { - for (j = 0, sym = symtab; j < nb_syms; j++, sym++) { - if (strstart(sym->st_name, sym_name, NULL)) { - addend -= sym->st_value; - } - } - } - } - type = rel->r_type; - if (is_label) { -/* TCG uses elf relocation constants */ -#define R_386_32 1 -#define R_386_PC32 2 - switch(type) { - case DIR32: - type = R_386_32; - goto do_reloc; - case DISP32: - type = R_386_PC32; - addend -= 4; - do_reloc: - fprintf(outfile, " tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n", - reloc_offset, type, relname, addend); - break; - default: - error("unsupported i386 relocation (%d)", type); - } - } else { - switch(type) { - case DIR32: - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n", - reloc_offset, relname, addend); - break; - case DISP32: - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d -4;\n", - reloc_offset, relname, reloc_offset, addend); - break; - default: - error("unsupported i386 relocation (%d)", type); - } - } -#else -#error unsupport object format -#endif - } - } - } -#elif defined(HOST_X86_64) - { - char relname[256]; - int type, is_label; - int addend; - int reloc_offset; - for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) { - if (rel->r_offset >= start_offset && - rel->r_offset < start_offset + copy_size) { - sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name; - is_label = get_reloc_expr(relname, sizeof(relname), sym_name); - type = ELF32_R_TYPE(rel->r_info); - addend = rel->r_addend; - reloc_offset = rel->r_offset - start_offset; - if (is_label) { - switch(type) { - case R_X86_64_32: - case R_X86_64_32S: - case R_X86_64_PC32: - fprintf(outfile, " tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n", - reloc_offset, type, relname, addend); - break; - default: - error("unsupported X86_64 relocation (%d)", type); - } - } else { - switch(type) { - case R_X86_64_32: - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (uint32_t)%s + %d;\n", - reloc_offset, relname, addend); - break; - case R_X86_64_32S: - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (int32_t)%s + %d;\n", - reloc_offset, relname, addend); - break; - case R_X86_64_PC32: - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %d) + %d;\n", - reloc_offset, relname, reloc_offset, addend); - break; - default: - error("unsupported X86_64 relocation (%d)", type); - } - } - } - } - } -#elif defined(HOST_PPC) - { -#ifdef CONFIG_FORMAT_ELF - char relname[256]; - int type; - int addend; - int is_label; - int reloc_offset; - for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) { - if (rel->r_offset >= start_offset && - rel->r_offset < start_offset + copy_size) { - sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name; - reloc_offset = rel->r_offset - start_offset; - if (strstart(sym_name, "__op_jmp", &p)) { - int n; - n = strtol(p, NULL, 10); - /* __op_jmp relocations are done at - runtime to do translated block - chaining: the offset of the instruction - needs to be stored */ - fprintf(outfile, " jmp_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\n", - n, reloc_offset); - continue; - } - - get_reloc_expr(relname, sizeof(relname), sym_name); - type = ELF32_R_TYPE(rel->r_info); - is_label = get_reloc_expr(relname, sizeof(relname), sym_name); - addend = rel->r_addend; - if (is_label) { - switch (type) { - case R_PPC_REL24: - fprintf (outfile, " tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n", - reloc_offset, type, relname, addend); - break; - default: - error ("unsupported ppc relocation (%d)", type); - } - } - else { - switch(type) { - case R_PPC_ADDR32: - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n", - reloc_offset, relname, addend); - break; - case R_PPC_ADDR16_LO: - fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d);\n", - reloc_offset, relname, addend); - break; - case R_PPC_ADDR16_HI: - fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d) >> 16;\n", - reloc_offset, relname, addend); - break; - case R_PPC_ADDR16_HA: - fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = (%s + %d + 0x8000) >> 16;\n", - reloc_offset, relname, addend); - break; - case R_PPC_REL24: - /* warning: must be at 32 MB distancy */ - fprintf(outfile, "{\n" - " long disp = (%s - (long)(gen_code_ptr + %d) + %d);\n" - " if ((disp << 6) >> 6 != disp) {;\n" - " fprintf(stderr, \"Branch target is too far away\\n\");" - " abort();\n" - " }\n" - "}\n", - relname, reloc_offset, addend); - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | ((%s - (long)(gen_code_ptr + %d) + %d) & 0x03fffffc);\n", - reloc_offset, reloc_offset, relname, reloc_offset, addend); - break; - default: - error("unsupported powerpc relocation (%d)", type); - } - } - } - } -#elif defined(CONFIG_FORMAT_MACH) - struct scattered_relocation_info *scarel; - struct relocation_info * rel; - char final_sym_name[256]; - const char *sym_name; - const char *p; - int slide, sslide; - int i; - - for(i = 0, rel = relocs; i < nb_relocs; i++, rel++) { - unsigned int offset, length, value = 0; - unsigned int type, pcrel, isym = 0; - unsigned int usesym = 0; - - if(R_SCATTERED & rel->r_address) { - scarel = (struct scattered_relocation_info*)rel; - offset = (unsigned int)scarel->r_address; - length = scarel->r_length; - pcrel = scarel->r_pcrel; - type = scarel->r_type; - value = scarel->r_value; - } else { - value = isym = rel->r_symbolnum; - usesym = (rel->r_extern); - offset = rel->r_address; - length = rel->r_length; - pcrel = rel->r_pcrel; - type = rel->r_type; - } - - slide = offset - start_offset; - - if (!(offset >= start_offset && offset < start_offset + size)) - continue; /* not in our range */ - - sym_name = get_reloc_name(rel, &sslide); - - if(usesym && symtab[isym].n_type & N_STAB) - continue; /* don't handle STAB (debug sym) */ - - if (sym_name && strstart(sym_name, "__op_jmp", &p)) { - int n; - n = strtol(p, NULL, 10); - fprintf(outfile, " jmp_offsets[%d] = %d + (gen_code_ptr - gen_code_buf);\n", - n, slide); - continue; /* Nothing more to do */ - } - - if(!sym_name) { - fprintf(outfile, "/* #warning relocation not handled in %s (value 0x%x, %s, offset 0x%x, length 0x%x, %s, type 0x%x) */\n", - name, value, usesym ? "use sym" : "don't use sym", offset, length, pcrel ? "pcrel":"", type); - continue; /* dunno how to handle without final_sym_name */ - } - - get_reloc_expr(final_sym_name, sizeof(final_sym_name), - sym_name); - switch(type) { - case PPC_RELOC_BR24: - if (!strstart(sym_name,"__op_gen_label",&p)) { - fprintf(outfile, "{\n"); - fprintf(outfile, " uint32_t imm = *(uint32_t *)(gen_code_ptr + %d) & 0x3fffffc;\n", slide); - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | ((imm + ((long)%s - (long)gen_code_ptr) + %d) & 0x03fffffc);\n", - slide, slide, name, sslide); - fprintf(outfile, "}\n"); - } else { - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = (*(uint32_t *)(gen_code_ptr + %d) & ~0x03fffffc) | (((long)%s - (long)gen_code_ptr - %d) & 0x03fffffc);\n", - slide, slide, final_sym_name, slide); - } - break; - case PPC_RELOC_HI16: - fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d) >> 16;\n", - slide, final_sym_name, sslide); - break; - case PPC_RELOC_LO16: - fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d);\n", - slide, final_sym_name, sslide); - break; - case PPC_RELOC_HA16: - fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d + 2) = (%s + %d + 0x8000) >> 16;\n", - slide, final_sym_name, sslide); - break; - default: - error("unsupported powerpc relocation (%d)", type); - } - } -#else -#error unsupport object format -#endif - } -#elif defined(HOST_S390) - { - char relname[256]; - int type; - int addend; - int reloc_offset; - for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) { - if (rel->r_offset >= start_offset && - rel->r_offset < start_offset + copy_size) { - sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name; - get_reloc_expr(relname, sizeof(relname), sym_name); - type = ELF32_R_TYPE(rel->r_info); - addend = rel->r_addend; - reloc_offset = rel->r_offset - start_offset; - switch(type) { - case R_390_32: - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n", - reloc_offset, relname, addend); - break; - case R_390_16: - fprintf(outfile, " *(uint16_t *)(gen_code_ptr + %d) = %s + %d;\n", - reloc_offset, relname, addend); - break; - case R_390_8: - fprintf(outfile, " *(uint8_t *)(gen_code_ptr + %d) = %s + %d;\n", - reloc_offset, relname, addend); - break; - case R_390_PC32DBL: - if (ELF32_ST_TYPE(symtab[ELFW(R_SYM)(rel->r_info)].st_info) == STT_SECTION) { - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) += " - "((long)&%s - (long)gen_code_ptr) >> 1;\n", - reloc_offset, name); - } - else - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) = " - "(%s + %d - ((uint32_t)gen_code_ptr + %d)) >> 1;\n", - reloc_offset, relname, addend, reloc_offset); - break; - default: - error("unsupported s390 relocation (%d)", type); - } - } - } - } -#elif defined(HOST_ALPHA) - { - for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) { - if (rel->r_offset >= start_offset && rel->r_offset < start_offset + copy_size) { - int type; - long reloc_offset; - - type = ELF64_R_TYPE(rel->r_info); - sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name; - reloc_offset = rel->r_offset - start_offset; - switch (type) { - case R_ALPHA_GPDISP: - /* The gp is just 32 bit, and never changes, so it's easiest to emit it - as an immediate instead of constructing it from the pv or ra. */ - fprintf(outfile, " immediate_ldah(gen_code_ptr + %ld, gp);\n", - reloc_offset); - fprintf(outfile, " immediate_lda(gen_code_ptr + %ld, gp);\n", - reloc_offset + (int)rel->r_addend); - break; - case R_ALPHA_LITUSE: - /* jsr to literal hint. Could be used to optimize to bsr. Ignore for - now, since some called functions (libc) need pv to be set up. */ - break; - case R_ALPHA_HINT: - /* Branch target prediction hint. Ignore for now. Should be already - correct for in-function jumps. */ - break; - case R_ALPHA_LITERAL: - /* Load a literal from the GOT relative to the gp. Since there's only a - single gp, nothing is to be done. */ - break; - case R_ALPHA_GPRELHIGH: - /* Handle fake relocations against __op_param symbol. Need to emit the - high part of the immediate value instead. Other symbols need no - special treatment. */ - if (strstart(sym_name, "__op_param", &p)) - fprintf(outfile, " immediate_ldah(gen_code_ptr + %ld, param%s);\n", - reloc_offset, p); - break; - case R_ALPHA_GPRELLOW: - if (strstart(sym_name, "__op_param", &p)) - fprintf(outfile, " immediate_lda(gen_code_ptr + %ld, param%s);\n", - reloc_offset, p); - break; - case R_ALPHA_BRSGP: - /* PC-relative jump. Tweak offset to skip the two instructions that try to - set up the gp from the pv. */ - fprintf(outfile, " fix_bsr(gen_code_ptr + %ld, (uint8_t *) &%s - (gen_code_ptr + %ld + 4) + 8);\n", - reloc_offset, sym_name, reloc_offset); - break; - default: - error("unsupported Alpha relocation (%d)", type); - } - } - } - } -#elif defined(HOST_IA64) - { - unsigned long sym_idx; - long code_offset; - char relname[256]; - int type; - long addend; - - for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) { - sym_idx = ELF64_R_SYM(rel->r_info); - if (rel->r_offset < start_offset - || rel->r_offset >= start_offset + copy_size) - continue; - sym_name = (strtab + symtab[sym_idx].st_name); - code_offset = rel->r_offset - start_offset; - if (strstart(sym_name, "__op_jmp", &p)) { - int n; - n = strtol(p, NULL, 10); - /* __op_jmp relocations are done at - runtime to do translated block - chaining: the offset of the instruction - needs to be stored */ - fprintf(outfile, " jmp_offsets[%d] =" - "%ld + (gen_code_ptr - gen_code_buf);\n", - n, code_offset); - continue; - } - get_reloc_expr(relname, sizeof(relname), sym_name); - type = ELF64_R_TYPE(rel->r_info); - addend = rel->r_addend; - switch(type) { - case R_IA64_IMM64: - fprintf(outfile, - " ia64_imm64(gen_code_ptr + %ld, " - "%s + %ld);\n", - code_offset, relname, addend); - break; - case R_IA64_LTOFF22X: - case R_IA64_LTOFF22: - fprintf(outfile, " IA64_LTOFF(gen_code_ptr + %ld," - " %s + %ld, %d);\n", - code_offset, relname, addend, - (type == R_IA64_LTOFF22X)); - break; - case R_IA64_LDXMOV: - fprintf(outfile, - " ia64_ldxmov(gen_code_ptr + %ld," - " %s + %ld);\n", code_offset, relname, addend); - break; - - case R_IA64_PCREL21B: - if (strstart(sym_name, "__op_gen_label", NULL)) { - fprintf(outfile, - " ia64_imm21b(gen_code_ptr + %ld," - " (long) (%s + %ld -\n\t\t" - "((long) gen_code_ptr + %ld)) >> 4);\n", - code_offset, relname, addend, - code_offset & ~0xfUL); - } else { - fprintf(outfile, - " IA64_PLT(gen_code_ptr + %ld, " - "%d);\t/* %s + %ld */\n", - code_offset, - get_plt_index(sym_name, addend), - sym_name, addend); - } - break; - default: - error("unsupported ia64 relocation (0x%x)", - type); - } - } - fprintf(outfile, " ia64_nop_b(gen_code_ptr + %d);\n", - copy_size - 16 + 2); - } -#elif defined(HOST_SPARC) - { - char relname[256]; - int type; - int addend; - int reloc_offset; - for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) { - if (rel->r_offset >= start_offset && - rel->r_offset < start_offset + copy_size) { - sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name; - get_reloc_expr(relname, sizeof(relname), sym_name); - type = ELF32_R_TYPE(rel->r_info); - addend = rel->r_addend; - reloc_offset = rel->r_offset - start_offset; - switch(type) { - case R_SPARC_32: - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n", - reloc_offset, relname, addend); - break; - case R_SPARC_HI22: - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) = " - "((*(uint32_t *)(gen_code_ptr + %d)) " - " & ~0x3fffff) " - " | (((%s + %d) >> 10) & 0x3fffff);\n", - reloc_offset, reloc_offset, relname, addend); - break; - case R_SPARC_LO10: - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) = " - "((*(uint32_t *)(gen_code_ptr + %d)) " - " & ~0x3ff) " - " | ((%s + %d) & 0x3ff);\n", - reloc_offset, reloc_offset, relname, addend); - break; - case R_SPARC_WDISP30: - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) = " - "((*(uint32_t *)(gen_code_ptr + %d)) " - " & ~0x3fffffff) " - " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) " - " & 0x3fffffff);\n", - reloc_offset, reloc_offset, relname, addend, - reloc_offset); - break; - case R_SPARC_WDISP22: - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) = " - "((*(uint32_t *)(gen_code_ptr + %d)) " - " & ~0x3fffff) " - " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) " - " & 0x3fffff);\n", - rel->r_offset - start_offset, - rel->r_offset - start_offset, - relname, addend, - rel->r_offset - start_offset); - break; - default: - error("unsupported sparc relocation (%d)", type); - } - } - } - } -#elif defined(HOST_SPARC64) - { - char relname[256]; - int type; - int addend; - int reloc_offset; - for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) { - if (rel->r_offset >= start_offset && - rel->r_offset < start_offset + copy_size) { - sym_name = strtab + symtab[ELF64_R_SYM(rel->r_info)].st_name; - get_reloc_expr(relname, sizeof(relname), sym_name); - type = ELF32_R_TYPE(rel->r_info); - addend = rel->r_addend; - reloc_offset = rel->r_offset - start_offset; - switch(type) { - case R_SPARC_32: - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %d;\n", - reloc_offset, relname, addend); - break; - case R_SPARC_HI22: - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) = " - "((*(uint32_t *)(gen_code_ptr + %d)) " - " & ~0x3fffff) " - " | (((%s + %d) >> 10) & 0x3fffff);\n", - reloc_offset, reloc_offset, relname, addend); - break; - case R_SPARC_LO10: - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) = " - "((*(uint32_t *)(gen_code_ptr + %d)) " - " & ~0x3ff) " - " | ((%s + %d) & 0x3ff);\n", - reloc_offset, reloc_offset, relname, addend); - break; - case R_SPARC_OLO10: - addend += ELF64_R_TYPE_DATA (rel->r_info); - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) = " - "((*(uint32_t *)(gen_code_ptr + %d)) " - " & ~0x3ff) " - " | ((%s + %d) & 0x3ff);\n", - reloc_offset, reloc_offset, relname, addend); - break; - case R_SPARC_WDISP30: - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) = " - "((*(uint32_t *)(gen_code_ptr + %d)) " - " & ~0x3fffffff) " - " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) " - " & 0x3fffffff);\n", - reloc_offset, reloc_offset, relname, addend, - reloc_offset); - break; - case R_SPARC_WDISP22: - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) = " - "((*(uint32_t *)(gen_code_ptr + %d)) " - " & ~0x3fffff) " - " | ((((%s + %d) - (long)(gen_code_ptr + %d))>>2) " - " & 0x3fffff);\n", - reloc_offset, reloc_offset, relname, addend, - reloc_offset); - break; - case R_SPARC_HH22: - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) = " - "((*(uint32_t *)(gen_code_ptr + %d)) " - " & ~0x00000000) " - " | (((%s + %d) >> 42) & 0x00000000);\n", - reloc_offset, reloc_offset, relname, addend); - break; - - case R_SPARC_LM22: - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) = " - "((*(uint32_t *)(gen_code_ptr + %d)) " - " & ~0x00000000) " - " | (((%s + %d) >> 10) & 0x00000000);\n", - reloc_offset, reloc_offset, relname, addend); - break; - - case R_SPARC_HM10: - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + %d) = " - "((*(uint32_t *)(gen_code_ptr + %d)) " - " & ~0x00000000) " - " | ((((%s + %d) >> 32 & 0x3ff)) & 0x00000000);\n", - reloc_offset, reloc_offset, relname, addend); - break; - - default: - error("unsupported sparc64 relocation (%d) for symbol %s", type, relname); - } - } - } - } -#elif defined(HOST_M68K) - { - char relname[256]; - int type; - int addend; - int reloc_offset; - Elf32_Sym *sym; - for(i = 0, rel = relocs;i < nb_relocs; i++, rel++) { - if (rel->r_offset >= start_offset && - rel->r_offset < start_offset + copy_size) { - sym = &(symtab[ELFW(R_SYM)(rel->r_info)]); - sym_name = strtab + symtab[ELFW(R_SYM)(rel->r_info)].st_name; - get_reloc_expr(relname, sizeof(relname), sym_name); - type = ELF32_R_TYPE(rel->r_info); - addend = get32((uint32_t *)(text + rel->r_offset)) + rel->r_addend; - reloc_offset = rel->r_offset - start_offset; - switch(type) { - case R_68K_32: - fprintf(outfile, " /* R_68K_32 RELOC, offset %x */\n", rel->r_offset) ; - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s + %#x;\n", - reloc_offset, relname, addend ); - break; - case R_68K_PC32: - fprintf(outfile, " /* R_68K_PC32 RELOC, offset %x */\n", rel->r_offset); - fprintf(outfile, " *(uint32_t *)(gen_code_ptr + %d) = %s - (long)(gen_code_ptr + %#x) + %#x;\n", - reloc_offset, relname, reloc_offset, /*sym->st_value+*/ addend); - break; - default: - error("unsupported m68k relocation (%d)", type); - } - } - } - } -#elif defined(HOST_HPPA) - { - char relname[256]; - int type, is_label; - int addend; - int reloc_offset; - for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) { - if (rel->r_offset >= start_offset && - rel->r_offset < start_offset + copy_size) { - sym_name = get_rel_sym_name(rel); - sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name; - is_label = get_reloc_expr(relname, sizeof(relname), sym_name); - type = ELF32_R_TYPE(rel->r_info); - addend = rel->r_addend; - reloc_offset = rel->r_offset - start_offset; - - if (is_label) { - switch (type) { - case R_PARISC_PCREL17F: - fprintf(outfile, -" tcg_out_reloc(s, gen_code_ptr + %d, %d, %s, %d);\n", - reloc_offset, type, relname, addend); - break; - default: - error("unsupported hppa label relocation (%d)", type); - } - } else { - switch (type) { - case R_PARISC_DIR21L: - fprintf(outfile, -" hppa_patch21l((uint32_t *)(gen_code_ptr + %d), %s, %d);\n", - reloc_offset, relname, addend); - break; - case R_PARISC_DIR14R: - fprintf(outfile, -" hppa_patch14r((uint32_t *)(gen_code_ptr + %d), %s, %d);\n", - reloc_offset, relname, addend); - break; - case R_PARISC_PCREL17F: - if (strstart(sym_name, "__op_gen_label", NULL)) { - fprintf(outfile, -" hppa_patch17f((uint32_t *)(gen_code_ptr + %d), %s, %d);\n", - reloc_offset, relname, addend); - } else { - fprintf(outfile, -" HPPA_RECORD_BRANCH(hppa_stubs, (uint32_t *)(gen_code_ptr + %d), %s);\n", - reloc_offset, relname); - } - break; - case R_PARISC_DPREL21L: - if (strstart(sym_name, "__op_param", &p)) - fprintf(outfile, -" hppa_load_imm21l((uint32_t *)(gen_code_ptr + %d), param%s, %d);\n", - reloc_offset, p, addend); - else - fprintf(outfile, -" hppa_patch21l_dprel((uint32_t *)(gen_code_ptr + %d), %s, %d);\n", - reloc_offset, relname, addend); - break; - case R_PARISC_DPREL14R: - if (strstart(sym_name, "__op_param", &p)) - fprintf(outfile, -" hppa_load_imm14r((uint32_t *)(gen_code_ptr + %d), param%s, %d);\n", - reloc_offset, p, addend); - else - fprintf(outfile, -" hppa_patch14r_dprel((uint32_t *)(gen_code_ptr + %d), %s, %d);\n", - reloc_offset, relname, addend); - break; - default: - error("unsupported hppa relocation (%d)", type); - } - } - } - } - } -#elif defined(HOST_MIPS) || defined(HOST_MIPS64) - { - for (i = 0, rel = relocs; i < nb_relocs; i++, rel++) { - if (rel->r_offset >= start_offset && rel->r_offset < start_offset + copy_size) { - char relname[256]; - int type; - int addend; - int reloc_offset; - - sym_name = strtab + symtab[ELF32_R_SYM(rel->r_info)].st_name; - /* the compiler leave some unnecessary references to the code */ - if (sym_name[0] == '\0') - continue; - get_reloc_expr(relname, sizeof(relname), sym_name); - type = ELF32_R_TYPE(rel->r_info); - addend = get32((uint32_t *)(text + rel->r_offset)); - reloc_offset = rel->r_offset - start_offset; - switch (type) { - case R_MIPS_26: - fprintf(outfile, " /* R_MIPS_26 RELOC, offset 0x%x, name %s */\n", - rel->r_offset, sym_name); - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + 0x%x) = " - "(0x%x & ~0x3fffff) " - "| ((0x%x + ((%s - (*(uint32_t *)(gen_code_ptr + 0x%x))) >> 2)) " - " & 0x3fffff);\n", - reloc_offset, addend, addend, relname, reloc_offset); - break; - case R_MIPS_HI16: - fprintf(outfile, " /* R_MIPS_HI16 RELOC, offset 0x%x, name %s */\n", - rel->r_offset, sym_name); - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + 0x%x) = " - "((*(uint32_t *)(gen_code_ptr + 0x%x)) " - " & ~0xffff) " - " | (((%s - 0x8000) >> 16) & 0xffff);\n", - reloc_offset, reloc_offset, relname); - break; - case R_MIPS_LO16: - fprintf(outfile, " /* R_MIPS_LO16 RELOC, offset 0x%x, name %s */\n", - rel->r_offset, sym_name); - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + 0x%x) = " - "((*(uint32_t *)(gen_code_ptr + 0x%x)) " - " & ~0xffff) " - " | (%s & 0xffff);\n", - reloc_offset, reloc_offset, relname); - break; - case R_MIPS_PC16: - fprintf(outfile, " /* R_MIPS_PC16 RELOC, offset 0x%x, name %s */\n", - rel->r_offset, sym_name); - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + 0x%x) = " - "(0x%x & ~0xffff) " - "| ((0x%x + ((%s - (*(uint32_t *)(gen_code_ptr + 0x%x))) >> 2)) " - " & 0xffff);\n", - reloc_offset, addend, addend, relname, reloc_offset); - break; - case R_MIPS_GOT16: - case R_MIPS_CALL16: - fprintf(outfile, " /* R_MIPS_GOT16 RELOC, offset 0x%x, name %s */\n", - rel->r_offset, sym_name); - fprintf(outfile, - " *(uint32_t *)(gen_code_ptr + 0x%x) = " - "((*(uint32_t *)(gen_code_ptr + 0x%x)) " - " & ~0xffff) " - " | (((%s - 0x8000) >> 16) & 0xffff);\n", - reloc_offset, reloc_offset, relname); - break; - default: - error("unsupported MIPS relocation (%d)", type); - } - } - } - } -#elif defined(HOST_ARM) - error("dyngen targets not supported on ARM"); -#elif defined(HOST_PPC64) - error("dyngen targets not supported on PPC64"); -#else -#error unsupported CPU -#endif - fprintf(outfile, " gen_code_ptr += %d;\n", copy_size); - fprintf(outfile, "}\n"); - fprintf(outfile, "break;\n\n"); - } else { - fprintf(outfile, "static inline void gen_%s(", name); - if (nb_args == 0) { - fprintf(outfile, "void"); - } else { - for(i = 0; i < nb_args; i++) { - if (i != 0) - fprintf(outfile, ", "); - fprintf(outfile, "long param%d", i + 1); - } - } - fprintf(outfile, ")\n"); - fprintf(outfile, "{\n"); - for(i = 0; i < nb_args; i++) { - fprintf(outfile, " *gen_opparam_ptr++ = param%d;\n", i + 1); - } - fprintf(outfile, " *gen_opc_ptr++ = INDEX_%s;\n", name); - fprintf(outfile, "}\n\n"); - } -} - -static int gen_file(FILE *outfile, int out_type) -{ - int i; - EXE_SYM *sym; - - if (out_type == OUT_INDEX_OP) { - for(i = 0, sym = symtab; i < nb_syms; i++, sym++) { - const char *name; - name = get_sym_name(sym); - if (strstart(name, OP_PREFIX, NULL)) { - gen_code(name, sym->st_value, sym->st_size, outfile, 2); - } - } - } else if (out_type == OUT_GEN_OP) { - /* generate gen_xxx functions */ - for(i = 0, sym = symtab; i < nb_syms; i++, sym++) { - const char *name; - name = get_sym_name(sym); - if (strstart(name, OP_PREFIX, NULL)) { -#if defined(CONFIG_FORMAT_ELF) || defined(CONFIG_FORMAT_COFF) - if (sym->st_shndx != text_shndx) - error("invalid section for opcode (0x%x)", sym->st_shndx); -#endif - gen_code(name, sym->st_value, sym->st_size, outfile, 0); - } - } - - } else { - /* generate big code generation switch */ - -#ifdef HOST_ARM - error("dyngen targets not supported on ARM"); -#endif -#ifdef HOST_IA64 -#error broken - { - long addend, not_first = 0; - unsigned long sym_idx; - int index, max_index; - const char *sym_name; - EXE_RELOC *rel; - - max_index = -1; - for (i = 0, rel = relocs;i < nb_relocs; i++, rel++) { - sym_idx = ELF64_R_SYM(rel->r_info); - sym_name = (strtab + symtab[sym_idx].st_name); - if (strstart(sym_name, "__op_gen_label", NULL)) - continue; - if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B) - continue; - - addend = rel->r_addend; - index = get_plt_index(sym_name, addend); - if (index <= max_index) - continue; - max_index = index; - fprintf(outfile, " extern void %s(void);\n", sym_name); - } - - fprintf(outfile, - " struct ia64_fixup *plt_fixes = NULL, " - "*ltoff_fixes = NULL;\n" - " static long plt_target[] = {\n\t"); - - max_index = -1; - for (i = 0, rel = relocs;i < nb_relocs; i++, rel++) { - sym_idx = ELF64_R_SYM(rel->r_info); - sym_name = (strtab + symtab[sym_idx].st_name); - if (strstart(sym_name, "__op_gen_label", NULL)) - continue; - if (ELF64_R_TYPE(rel->r_info) != R_IA64_PCREL21B) - continue; - - addend = rel->r_addend; - index = get_plt_index(sym_name, addend); - if (index <= max_index) - continue; - max_index = index; - - if (not_first) - fprintf(outfile, ",\n\t"); - not_first = 1; - if (addend) - fprintf(outfile, "(long) &%s + %ld", sym_name, addend); - else - fprintf(outfile, "(long) &%s", sym_name); - } - fprintf(outfile, "\n };\n" - " unsigned int plt_offset[%u] = { 0 };\n", max_index + 1); - } -#endif - - for(i = 0, sym = symtab; i < nb_syms; i++, sym++) { - const char *name; - name = get_sym_name(sym); - if (strstart(name, OP_PREFIX, NULL)) { -#if 0 - printf("%4d: %s pos=0x%08x len=%d\n", - i, name, sym->st_value, sym->st_size); -#endif -#if defined(CONFIG_FORMAT_ELF) || defined(CONFIG_FORMAT_COFF) - if (sym->st_shndx != text_shndx) - error("invalid section for opcode (0x%x)", sym->st_shndx); -#endif - gen_code(name, sym->st_value, sym->st_size, outfile, 1); - } - } - } - - return 0; -} - -static void usage(void) -{ - printf("dyngen (c) 2003 Fabrice Bellard\n" - "usage: dyngen [-o outfile] [-c] objfile\n" - "Generate a dynamic code generator from an object file\n" - "-c output enum of operations\n" - "-g output gen_op_xx() functions\n" - ); - exit(1); -} - -int main(int argc, char **argv) -{ - int c, out_type; - const char *filename, *outfilename; - FILE *outfile; - - outfilename = "out.c"; - out_type = OUT_CODE; - for(;;) { - c = getopt(argc, argv, "ho:cg"); - if (c == -1) - break; - switch(c) { - case 'h': - usage(); - break; - case 'o': - outfilename = optarg; - break; - case 'c': - out_type = OUT_INDEX_OP; - break; - case 'g': - out_type = OUT_GEN_OP; - break; - } - } - if (optind >= argc) - usage(); - filename = argv[optind]; - outfile = fopen(outfilename, "w"); - if (!outfile) - error("could not open '%s'", outfilename); - - load_object(filename); - gen_file(outfile, out_type); - fclose(outfile); - return 0; -} @@ -60,9 +60,8 @@ add_i32 t0, t1, t2 (t0 <- t1 + t2) - Basic blocks end after branches (e.g. brcond_i32 instruction), goto_tb and exit_tb instructions. -- Basic blocks end before legacy dyngen operations. -- Basic blocks start after the end of a previous basic block, at a - set_label instruction or after a legacy dyngen operation. +- Basic blocks start after the end of a previous basic block, or at a + set_label instruction. After the end of a basic block, the content of temporaries is destroyed, but local temporaries and globals are preserved. @@ -423,18 +422,7 @@ register. target, functions must be able to return 2 values in registers for 64 bit return type. -5) Migration from dyngen to TCG - -TCG is backward compatible with QEMU "dyngen" operations. It means -that TCG instructions can be freely mixed with dyngen operations. It -is expected that QEMU targets will be progressively fully converted to -TCG. Once a target is fully converted to TCG, it will be possible -to apply more optimizations because more registers will be free for -the generated code. - -The exception model is the same as the dyngen one. - -6) Recommended coding rules for best performance +5) Recommended coding rules for best performance - Use globals to represent the parts of the QEMU CPU state which are often modified, e.g. the integer registers and the condition @@ -442,8 +430,7 @@ The exception model is the same as the dyngen one. - Avoid globals stored in fixed registers. They must be used only to store the pointer to the CPU state and possibly to store a pointer - to a register window. The other uses are to ensure backward - compatibility with dyngen during the porting a new target to TCG. + to a register window. - Use temporaries. Use local temporaries only when really needed, e.g. when you need to use a value after a jump. Local temporaries |