From: Peter Johnson Date: Sat, 13 Jan 2007 19:34:04 +0000 (-0000) Subject: Initial commit of Mach-O object format. X-Git-Tag: v0.6.0~55 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7f68927283c004583f427767cf0dd57b464ce649;p=yasm Initial commit of Mach-O object format. Contributed by: Henryk Richter This adds 3 object format keywords: macho, macho32, macho64. These work in the same way as elf, elf32, and elf64. The object format is still a work in progress; amongst other things it does not yet support full cross-section references (othersym1-othersym2), dynamic linking, or GAS input syntax. We will continue to improve and work on these features in the near future. svn path=/trunk/yasm/; revision=1732 --- diff --git a/modules/objfmts/Makefile.inc b/modules/objfmts/Makefile.inc index 4deb5725..be672182 100644 --- a/modules/objfmts/Makefile.inc +++ b/modules/objfmts/Makefile.inc @@ -5,6 +5,7 @@ EXTRA_DIST += modules/objfmts/bin/Makefile.inc EXTRA_DIST += modules/objfmts/elf/Makefile.inc #!EXTRA_DIST += modules/objfmts/omf/Makefile.inc EXTRA_DIST += modules/objfmts/coff/Makefile.inc +EXTRA_DIST += modules/objfmts/macho/Makefile.inc EXTRA_DIST += modules/objfmts/rdf/Makefile.inc EXTRA_DIST += modules/objfmts/win32/Makefile.inc EXTRA_DIST += modules/objfmts/win64/Makefile.inc @@ -15,6 +16,7 @@ include modules/objfmts/bin/Makefile.inc include modules/objfmts/elf/Makefile.inc #!include modules/objfmts/omf/Makefile.inc include modules/objfmts/coff/Makefile.inc +include modules/objfmts/macho/Makefile.inc include modules/objfmts/rdf/Makefile.inc include modules/objfmts/win32/Makefile.inc include modules/objfmts/win64/Makefile.inc diff --git a/modules/objfmts/macho/Makefile.inc b/modules/objfmts/macho/Makefile.inc new file mode 100644 index 00000000..be9f4bcb --- /dev/null +++ b/modules/objfmts/macho/Makefile.inc @@ -0,0 +1,9 @@ +# $Id$ + +libyasm_a_SOURCES += modules/objfmts/macho/macho-objfmt.c + +YASM_MODULES += objfmt_macho objfmt_macho32 objfmt_macho64 + +EXTRA_DIST += modules/objfmts/macho/tests/Makefile.inc + +include modules/objfmts/macho/tests/Makefile.inc diff --git a/modules/objfmts/macho/macho-objfmt.c b/modules/objfmts/macho/macho-objfmt.c new file mode 100644 index 00000000..20d16642 --- /dev/null +++ b/modules/objfmts/macho/macho-objfmt.c @@ -0,0 +1,1907 @@ +/* + * Mac OS X ABI Mach-O File Format + * + * Copyright (C) 2007 Henryk Richter, built upon xdf objfmt (C) Peter Johnson + * + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND OTHER CONTRIBUTORS ``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 OR OTHER CONTRIBUTORS 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. + */ +/* + notes: This implementation is rather basic. There are several implementation + issues to be sorted out for full compliance and error resilience. + Some examples are given below (nasm syntax). + + 1) section placement + Mach-O requires BSS sections to be placed last in object files. This + has to be done manually. + Example: + + section .text + mov rax,[qword foo] + section .data + dw 0 + section .bss + foo dw 0 + + 2) addressing issues + + 2.1) symbol relative relocation (i.e. mov eax,[foo wrt bar]) + Not implemented yet. + + 2.2) data referencing in 64 bit mode + While ELF allows 32 bit absolute relocations in 64 bit mode, Mach-O + does not. Therefore code like + lea rbx,[_foo] ;48 8d 1c 25 00 00 00 00 + mov rcx,[_bar] ;48 8b 0c 25 00 00 00 00 + with a 32 bit address field cannot be relocated into an address >= 0x100000000 (OSX actually + uses that). + + Actually, the only register where a 64 bit displacement is allowed in x86-64, is rax + as in the example 1). + + A plausible workaround is either classic PIC (like in C), which is in turn + not implemented in this object format. The recommended was is PC relative + code (called RIP-relative in x86-64). So instead of the lines above, just write: + lea rbx,[_foo wrt rip] + mov rcx,[_bar wrt rip] + + 2.3) section/data alignment + Normally, you specify sections with a specific alignment + and get your data layed out as desired. Unfortunately, the + linker in MacOS X seems to ignore the section alignment requests. + The workaround is an explicit alignment at the end of the text section. + + section .text + movdqa xmm0,[_foo wrt rip] + + align 16 + section .data align=16 + _foo dw 32,32,32,32,32,32,32,32 + + FIXME: perform that operation implicitly! + + 2.4) cross section symbol differences unsupported in current implementation + [extern foo] + [extern bar] + section .data + dq bar-foo + + Will currently produce an error though the necessary means are provided + by the Mach-O specification. + + 3) position independend coding (64 Bit) + Mach-O provides the relocation features X86_64_RELOC_GOT_LOAD and + X86_64_RELOC_GOT for C-compatible global offset tables. This IS NOT + implemented yet, sorry. + + 4) symbol naming for global and external symbols + BSD, Windows and MacOS-X use underscores for global symbols, + where ELF/Linux does not. This file contains simple means of adding + underscores to symbols by defining "AUTO_UNDERSCORE" but that + can be considered not more than a hack. For cross-platform coding, + use two symbols for your routines and referenced data. + +*/ + +#include +/*@unused@*/ RCSID("$Id$"); + +/* optional: automatically prefix underscores to global exported symbols */ +/*#define AUTO_UNDERSCORE*/ + +#define YASM_LIB_INTERNAL +#define YASM_BC_INTERNAL +#define YASM_EXPR_INTERNAL +#include + +/* MACH-O DEFINES */ +/* Mach-O in-file header structure sizes (32 BIT, see below for 64 bit defs) */ +#define MACHO_HEADER_SIZE 28 +#define MACHO_SEGCMD_SIZE 56 +#define MACHO_SECTCMD_SIZE 68 +#define MACHO_SYMCMD_SIZE 24 +#define MACHO_NLIST_SIZE 12 +#define MACHO_RELINFO_SIZE 8 + +/* 64 bit sizes */ +#define MACHO_HEADER64_SIZE 32 +#define MACHO_SEGCMD64_SIZE 72 +#define MACHO_SECTCMD64_SIZE 80 +#define MACHO_NLIST64_SIZE 16 +#define MACHO_RELINFO64_SIZE 8 + + +/* Mach-O file header values */ +#define MH_MAGIC 0xfeedface +#define MH_MAGIC_64 0xfeedfacf +#define CPU_TYPE_I386 7 /* x86 platform */ +#define CPU_SUBTYPE_I386_ALL 3 /* all-x86 compatible */ +#define CPU_ARCH_ABI64 0x01000000 /* 64 bit ABI */ +#define MH_OBJECT 0x1 /* object file */ + +#define LC_SEGMENT 0x1 /* segment load command */ +#define LC_SYMTAB 0x2 /* symbol table load command */ +#define LC_SEGMENT_64 0x19 /* segment load command */ + + +#define VM_PROT_NONE 0x00 +#define VM_PROT_READ 0x01 +#define VM_PROT_WRITE 0x02 +#define VM_PROT_EXECUTE 0x04 + +#define VM_PROT_DEFAULT (VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE) +#define VM_PROT_ALL (VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE) + +#define SECTION_TYPE 0x000000ff /* section type mask */ +#define SECTION_ATTRIBUTES 0xffffff00UL/* section attributes mask */ + +#define S_REGULAR 0x0 /* standard section */ +#define S_ZEROFILL 0x1 /* zerofill, in-memory only */ +#define S_CSTRING_LITERALS 0x2 /* literal C strings */ +#define S_4BYTE_LITERALS 0x3 /* only 4-byte literals */ +#define S_8BYTE_LITERALS 0x4 /* only 8-byte literals */ +#define S_LITERAL_POINTERS 0x5 /* only pointers to literals */ +#define S_NON_LAZY_SYMBOL_POINTERS 0x6 /* only non-lazy symbol pointers */ +#define S_LAZY_SYMBOL_POINTERS 0x7 /* only lazy symbol pointers */ +#define S_SYMBOL_STUBS 0x8 /* only symbol stubs; byte size of + * stub in the reserved2 field */ +#define S_MOD_INIT_FUNC_POINTERS 0x9 /* only function pointers for init */ +#define S_MOD_TERM_FUNC_POINTERS 0xa /* only function pointers for term */ +#define S_COALESCED 0xb /* symbols that are to be coalesced */ +#define S_GB_ZEROFILL 0xc /* >4GB zero fill on demand section */ +#define S_INTERPOSING 0xd /* only pairs of function pointers for + * interposing */ +#define S_16BYTE_LITERALS 0xe /* only 16 byte literals */ + +#define S_ATTR_DEBUG 0x02000000 /* a debug section */ +#define SECTION_ATTRIBUTES_SYS 0x00ffff00 /* system setable attributes */ +#define S_ATTR_SOME_INSTRUCTIONS 0x00000400 /* section contains some + * machine instructions */ +#define S_ATTR_EXT_RELOC 0x00000200 /* section has external + * relocation entries */ +#define S_ATTR_LOC_RELOC 0x00000100 /* section has local + * relocation entries */ + +#define SECTION_ATTRIBUTES_USR 0xff000000UL /* User setable attributes */ +#define S_ATTR_PURE_INSTRUCTIONS 0x80000000UL /* only true machine insns */ +#define S_ATTR_NO_TOC 0x40000000UL /* coalesced symbols that are + * not to be in a ranlib table + * of contents */ +#define S_ATTR_STRIP_STATIC_SYMS 0x20000000UL /* ok to strip static symbols + * in this section in files + * with the MH_DYLDLINK flag */ +#define S_ATTR_NO_DEAD_STRIP 0x10000000UL /* no dead stripping */ +#define S_ATTR_LIVE_SUPPORT 0x08000000UL /* blocks are live if they + * reference live blocks */ +#define S_ATTR_SELF_MODIFYING_CODE 0x04000000UL /* Used with i386 code stubs + * written on by dyld */ + +/* macho references symbols in different ways whether they are linked at + * runtime (LAZY, read library functions) or at link time (NON_LAZY, mostly + * data) + * + * TODO: proper support for dynamically linkable modules would require the + * __import sections as well as the dsymtab command + */ +#define REFERENCE_FLAG_UNDEFINED_NON_LAZY 0x0 +#define REFERENCE_FLAG_UNDEFINED_LAZY 0x1 + +#define align(x, y) \ + (((x) + (y) - 1) & ~((y) - 1)) /* align x to multiple of y */ + +#define align32(x) \ + align(x, 4) /* align x to 32 bit boundary */ + + +#define REGULAR_OUTBUF_SIZE 1024 + +#define macho_MAGIC 0x87654322 + +#define N_UNDF 0x00 /* undefined */ +#define N_ABS 0x02 /* absolute address */ +#define N_TEXT 0x04 /* text segment */ +#define N_DATA 0x06 /* data segment */ +#define N_BSS 0x08 /* bss segment */ +#define N_COMM 0x12 /* common reference */ +#define N_FN 0x1e /* file name */ +#define N_EXT 0x01 /* external (global) bit, OR'ed in */ +#define N_TYPE 0x1e /* mask for all the type bits */ +#define NO_SECT 0x00 /* no section for symbol in nlist */ +#define N_SECT 0x0e /* symbol is defined in a section */ + +#define macho_SYM_EXTERN 1 +#define macho_SYM_GLOBAL 2 +#define macho_SYM_EQU 4 + +enum reloc_type_x86_64 { + X86_64_RELOC_UNSIGNED, /* for absolute addresses */ + X86_64_RELOC_SIGNED, /* for signed 32-bit displacement */ + X86_64_RELOC_BRANCH, /* a CALL/JMP instruction with 32-bit displacement */ + X86_64_RELOC_GOT_LOAD, /* a MOVQ load of a GOT entry */ + X86_64_RELOC_GOT, /* other GOT references */ + X86_64_RELOC_SUBTRACTOR, /* must be followed by a X86_64_RELOC_UNSIGNED */ + X86_64_RELOC_SIGNED_1, /* for signed 32-bit displacement with a -1 addend */ + X86_64_RELOC_SIGNED_2, /* for signed 32-bit displacement with a -2 addend */ + X86_64_RELOC_SIGNED_4 /* for signed 32-bit displacement with a -4 addend */ +}; + + +typedef struct macho_reloc { + yasm_reloc reloc; + unsigned long line; /* source code line */ + /*@null@*/ yasm_symrec *base; /* base symbol (for WRT) */ + yasm_intnum *file_symbol; /* symbol written to file before fixing */ + yasm_intnum *bcoffset; /* byte code base (i.e. current instruction + * for code, probably obsolete assumption) + */ + enum { + macho_RELOC_REL = 1, /* relative to segment */ + macho_RELOC_WRT = 2, /* relative to symbol */ + macho_RELOC_RIP = 4, /* RIP-relative */ + macho_RELOC_SEG = 8, /* segment containing symbol */ + macho_RELOC_EXT = 16, /* external symbol */ + macho_RELOC_SECTINT = 32, /* relative to current section (probably obsolete assumption) */ + macho_RELOC_SECTINTL = 64 /* relative to current instruction (probably obsolete assumption) */ + } type; /* type of relocation */ + enum { + macho_RELOC_8 = 1, + macho_RELOC_16 = 2, + macho_RELOC_32 = 4, + macho_RELOC_64 = 8 + } size; /* size of relocation */ + unsigned int shift; /* relocation shift (0,4,8,16,24,32) */ + + unsigned int rdummy; /* dummy */ + unsigned int rsnum:24; /* contains symbol index if ext otherwise + * in-file section number + */ + unsigned int rpcrel:1; /* relative relocation */ + unsigned int rlength:2; /* 0=byte, 1=word, 2=long */ + unsigned int rext:1; /* external symbol referenced */ + unsigned int rtype:4; /* reloc type, 0 for us */ +} macho_reloc; + + +typedef struct macho_section_data { + /*@dependent@*/ yasm_symrec *sym; /* symbol created for this section */ + long scnum; /* section number (0=first section) */ + const char *segname; /* segment name in file */ + const char *sectname; /* section name in file */ + unsigned long flags; /* S_* flags */ + unsigned long size; /* size of raw data (section data) in bytes */ + unsigned long offset; /* offset in raw data within file in bytes, + * beginning with first section at offset 0 + * (see raw_section_off in macho_objfmt_output_info), + * this entry is excluding BSS */ + unsigned long nreloc; /* number of relocation entries */ + unsigned int extreloc; /* external relocations present (0/1) */ +} macho_section_data; + + +typedef struct macho_symrec_data { + /*@owned@*/ /*@null@*/ yasm_expr *size; /* size if COMMON declaration */ + unsigned long index; /* index in output order */ + yasm_intnum *value; /* valid after writing symtable to file */ + unsigned long length; /* length + 1 (plus auto underscore) */ + unsigned long add_uscore; /* add underscore (0/1) */ +} macho_symrec_data; + + +typedef struct yasm_objfmt_macho { + yasm_objfmt_base objfmt; /* base structure */ + + long parse_scnum; /* sect numbering in parser */ + int bits; /* 32 / 64 */ + + yasm_object *object; + yasm_symtab *symtab; + /*@dependent@ */ yasm_arch *arch; +} yasm_objfmt_macho; + + +typedef struct macho_objfmt_output_info { + yasm_objfmt_macho *objfmt_macho; + yasm_errwarns *errwarns; + /*@dependent@ */ FILE *f; + /*@only@ */ unsigned char *buf; + yasm_section *sect; + /*@dependent@ */ macho_section_data *msd; + + unsigned int is_64; /* write object in 64 bit mode */ + + /* vmsize and filesize available after traversing section count routine */ + unsigned long vmsize; /* raw size of all sections (including BSS) */ + unsigned long filesize; /* sections in file (excluding BSS) */ + unsigned long raw_section_off; /* offset from start of file to raw section data */ + + /* forward offset tracking */ + unsigned long offset; /* current file offset */ + unsigned long s_addr; /* section offset in memory */ + unsigned long rel_base; /* first relocation in file */ + unsigned long s_reloff; /* in-file offset to relocations */ + + unsigned long indx; /* current symbol size in bytes (name length+1) */ + unsigned long symindex; /* current symbol index in output order */ + int all_syms; /* outputting all symbols? */ + unsigned long strlength; /* length of all strings */ +} macho_objfmt_output_info; + + +static void macho_section_data_destroy(/*@only@*/ void *d); +static void macho_section_data_print(void *data, FILE *f, int indent_level); + +static const yasm_assoc_data_callback macho_section_data_cb = { + macho_section_data_destroy, + macho_section_data_print +}; + +static void macho_symrec_data_destroy(/*@only@*/ void *d); +static void macho_symrec_data_print(void *data, FILE *f, int indent_level); + +static const yasm_assoc_data_callback macho_symrec_data_cb = { + macho_symrec_data_destroy, + macho_symrec_data_print +}; + +yasm_objfmt_module yasm_macho_LTX_objfmt; +yasm_objfmt_module yasm_macho32_LTX_objfmt; +yasm_objfmt_module yasm_macho64_LTX_objfmt; + +static yasm_objfmt * +macho_objfmt_create_common(yasm_object *object, yasm_arch *a, + yasm_objfmt_module *module, int bits_pref) +{ + yasm_objfmt_macho *objfmt_macho = yasm_xmalloc(sizeof(yasm_objfmt_macho)); + + objfmt_macho->objfmt.module = module; + objfmt_macho->object = object; + objfmt_macho->symtab = yasm_object_get_symtab(object); + objfmt_macho->arch = a; + + /* Only support x86 arch for now */ + if (yasm__strcasecmp(yasm_arch_keyword(a), "x86") != 0) { + yasm_xfree(objfmt_macho); + return NULL; + } + + /* Support x86 and amd64 machines of x86 arch */ + if (yasm__strcasecmp(yasm_arch_get_machine(a), "x86") == 0 && + (bits_pref == 0 || bits_pref == 32)) + objfmt_macho->bits = 32; + else if (yasm__strcasecmp(yasm_arch_get_machine(a), "amd64") == 0 && + (bits_pref == 0 || bits_pref == 64)) + objfmt_macho->bits = 64; + else { + yasm_xfree(objfmt_macho); + return NULL; + } + + objfmt_macho->parse_scnum = 0; /* section numbering starts at 0 */ + return (yasm_objfmt *)objfmt_macho; +} + +static yasm_objfmt * +macho_objfmt_create(yasm_object *object, yasm_arch *a) +{ + yasm_objfmt *objfmt; + yasm_objfmt_macho *objfmt_macho; + + objfmt = macho_objfmt_create_common(object, a, &yasm_macho_LTX_objfmt, 0); + if (objfmt) { + objfmt_macho = (yasm_objfmt_macho *)objfmt; + /* Figure out which bitness of object format to use */ + if (objfmt_macho->bits == 32) + objfmt_macho->objfmt.module = &yasm_macho32_LTX_objfmt; + else if (objfmt_macho->bits == 64) + objfmt_macho->objfmt.module = &yasm_macho64_LTX_objfmt; + } + return objfmt; +} + +static yasm_objfmt * +macho32_objfmt_create(yasm_object *object, yasm_arch *a) +{ + return macho_objfmt_create_common(object, a, &yasm_macho32_LTX_objfmt, 32); +} + +static yasm_objfmt * +macho64_objfmt_create(yasm_object *object, yasm_arch *a) +{ + return macho_objfmt_create_common(object, a, &yasm_macho64_LTX_objfmt, 64); +} + +static int +macho_objfmt_output_value(yasm_value *value, unsigned char *buf, + size_t destsize, unsigned long offset, + yasm_bytecode *bc, int warn, /*@null@*/ void *d) +{ + /*@null@*/ macho_objfmt_output_info *info = (macho_objfmt_output_info *)d; + yasm_objfmt_macho *objfmt_macho; + /*@dependent@*/ /*@null@*/ yasm_intnum *intn; + unsigned long intn_minus, intn_plus = 0; + int retval; + unsigned int valsize = value->size; + macho_reloc *reloc = NULL; + + assert(info != NULL); + objfmt_macho = info->objfmt_macho; + + if (value->abs) + value->abs = yasm_expr_simplify(value->abs, 1); + + /* Try to output constant and PC-relative section-local first. + * Note this does NOT output any value with a SEG, WRT, external, + * cross-section, or non-PC-relative reference (those are handled below). + */ + switch (yasm_value_output_basic(value, buf, destsize, bc, warn, + info->objfmt_macho->arch)) { + case -1: + return 1; + case 0: + break; + default: + return 0; + } + + if (value->section_rel) { + yasm_error_set(YASM_ERROR_TOO_COMPLEX, + N_("macho: relocation too complex for current implementation")); + return 1; + } + + intn_minus = 0; + if (value->rel) { + yasm_sym_vis vis = yasm_symrec_get_visibility(value->rel); + + reloc = yasm_xcalloc(sizeof(macho_reloc), 1); + reloc->reloc.addr = yasm_intnum_create_uint(bc->offset + offset); + reloc->reloc.sym = value->rel; + reloc->base = NULL; + reloc->line = bc->line; + reloc->bcoffset = yasm_intnum_create_uint(bc->offset); + switch (valsize) { + case 64: + reloc->rlength = 3; + break; + case 32: + reloc->rlength = 2; + break; + case 16: + reloc->rlength = 1; + break; + case 8: + reloc->rlength = 0; + break; + default: + reloc->rlength = 0; + yasm_error_set(YASM_ERROR_TOO_COMPLEX, + N_("macho: relocation size unsupported")); + break; + } + reloc->size = valsize / 8; + reloc->shift = value->rshift; + /* R_ABS */ + + if (value->seg_of) { + yasm_error_set(YASM_ERROR_TOO_COMPLEX, + N_("macho: Sorry, segment relocation types not supported by now.")); + + reloc->type = macho_RELOC_SEG; + } else if (value->wrt) { + yasm_error_set(YASM_ERROR_TOO_COMPLEX, + N_("macho: Sorry, wrt relocation types not supported by now.")); + reloc->base = value->wrt; + reloc->type = macho_RELOC_WRT; + } else { + if (value->curpos_rel) { + reloc->type = macho_RELOC_RIP; + if (!info->is_64) { + /* Adjust to start of section, so subtract out the bytecode + * offset. + */ + intn_minus = bc->offset; + reloc->rpcrel = 1; + } else { + /* In 64 bit mode, the negative section offset is omitted + * for pcrel, but instruction offset is encoded in + * value->abs. Skip known instruction... + */ + intn_plus = offset + valsize; + reloc->rpcrel = 1; + } + } else + reloc->type = macho_RELOC_REL; + } + + if ((vis & YASM_SYM_EXTERN) || (vis & YASM_SYM_COMMON)) { + reloc->type |= macho_RELOC_EXT; + info->msd->extreloc = 1; /* this section has external relocations */ + } + + info->msd->nreloc++; + /*printf("reloc %s type %d ",yasm_symrec_get_name(reloc->reloc.sym),reloc->type);*/ + yasm_section_add_reloc(info->sect, (yasm_reloc *)reloc, yasm_xfree); + } + + if (intn_minus > 0) { + intn = yasm_intnum_create_uint(intn_minus); + yasm_intnum_calc(intn, YASM_EXPR_NEG, NULL); + } else + intn = yasm_intnum_create_uint(0); + + if (intn_plus > 0) { + yasm_intnum *intn_plus1 = yasm_intnum_create_uint(intn_plus); + + yasm_intnum_calc(intn, YASM_EXPR_NEG, intn_plus1); + yasm_intnum_destroy(intn_plus1); + } else if (value->abs) { + yasm_intnum *intn2 = yasm_expr_get_intnum(&value->abs, 0); + + if (!intn2) { + yasm_error_set(YASM_ERROR_TOO_COMPLEX, + N_("macho: relocation too complex")); + yasm_intnum_destroy(intn); + return 1; + } + yasm_intnum_calc(intn, YASM_EXPR_ADD, intn2); + } + + retval = yasm_arch_intnum_tobytes(objfmt_macho->arch, intn, buf, destsize, + valsize, 0, bc, warn); + /*printf("val %ld\n",yasm_intnum_get_int(intn));*/ + if (reloc) + reloc->file_symbol = intn; + else + yasm_intnum_destroy(intn); + return retval; +} + +static int +macho_objfmt_output_bytecode(yasm_bytecode *bc, /*@null@*/ void *d) +{ + /*@null@*/ macho_objfmt_output_info *info = (macho_objfmt_output_info *)d; + /*@null@*/ /*@only@*/ unsigned char *bigbuf; + unsigned long size = REGULAR_OUTBUF_SIZE; + int gap; + + assert(info != NULL); + + bigbuf = yasm_bc_tobytes(bc, info->buf, &size, &gap, info, + macho_objfmt_output_value, NULL); + + /* Don't bother doing anything else if size ended up being 0. */ + if (size == 0) { + if (bigbuf) + yasm_xfree(bigbuf); + return 0; + } + + /* Warn that gaps are converted to 0 and write out the 0's. */ + if (gap) { + unsigned long left; + + yasm_warn_set(YASM_WARN_UNINIT_CONTENTS, + N_("uninitialized space: zeroing")); + /* Write out in chunks */ + memset(info->buf, 0, REGULAR_OUTBUF_SIZE); + left = size; + while (left > REGULAR_OUTBUF_SIZE) { + fwrite(info->buf, REGULAR_OUTBUF_SIZE, 1, info->f); + left -= REGULAR_OUTBUF_SIZE; + } + fwrite(info->buf, left, 1, info->f); + } else { + /* Output buf (or bigbuf if non-NULL) to file */ + fwrite(bigbuf ? bigbuf : info->buf, (size_t) size, 1, info->f); + } + info->msd->size += size; + + /* If bigbuf was allocated, free it */ + if (bigbuf) + yasm_xfree(bigbuf); + + return 0; +} + +static int +macho_objfmt_output_section(yasm_section *sect, /*@null@ */ void *d) +{ + /*@null@ */ macho_objfmt_output_info *info = + (macho_objfmt_output_info *) d; + /*@dependent@ *//*@null@ */ macho_section_data *msd; + + /* FIXME: Don't output absolute sections into the section table */ + if (yasm_section_is_absolute(sect)) + return 0; + + assert(info != NULL); + msd = yasm_section_get_data(sect, &macho_section_data_cb); + assert(msd != NULL); + + if (msd->flags & S_ZEROFILL) { + /* Don't output BSS sections */ + msd->size = yasm_bc_next_offset(yasm_section_bcs_last(sect)); + } else { + info->sect = sect; + info->msd = msd; + yasm_section_bcs_traverse(sect, info->errwarns, info, + macho_objfmt_output_bytecode); + /* Sanity check final section size */ + if (msd->size != yasm_bc_next_offset(yasm_section_bcs_last(sect))) + yasm_internal_error( + N_("macho: section computed size did not match actual size")); + + /* offset to section in file is current file size */ + msd->offset = info->filesize; + info->filesize += msd->size; + } + + /* accumulate size in memory */ + info->vmsize += msd->size; + + return 0; +} + +static int +macho_objfmt_output_relocs64(yasm_section *sect, /*@null@ */ void *d) +{ + /*@null@*/ macho_objfmt_output_info *info = (macho_objfmt_output_info *)d; + /*@dependent@ *//*@null@ */ macho_section_data *msd; + macho_reloc *reloc; + + /* FIXME: Don't output absolute sections into the section table */ + if (yasm_section_is_absolute(sect)) + return 0; + + assert(info != NULL); + msd = yasm_section_get_data(sect, &macho_section_data_cb); + assert(msd != NULL); + + /* No relocations to output? Go on to next section */ + if (msd->nreloc == 0) + return 0; + + reloc = (macho_reloc *)yasm_section_relocs_first(sect); + while (reloc) { + unsigned char *localbuf = info->buf; + /*@null@ */ macho_symrec_data *xsymd; + + xsymd = yasm_symrec_get_data(reloc->reloc.sym, &macho_symrec_data_cb); + if (!xsymd) { + /* hmpf: there must be a better way than string compare ... */ + const char *chk = yasm_symrec_get_name(reloc->reloc.sym); + + if (strcmp(chk, "$") == 0 || strcmp(chk, "$$") == 0) { + reloc->rsnum = msd->scnum + 1; + reloc->type |= macho_RELOC_SECTINT; + if (strcmp(chk, "$") == 0) + reloc->type |= macho_RELOC_SECTINTL; + } else + yasm_internal_error(N_("macho: no symbol data for relocated symbol")); + } + yasm_intnum_get_sized(reloc->reloc.addr, localbuf, 4, 32, 0, 0, 0); + localbuf += 4; /* address of relocation */ + + /* find section where the symbol relates to + * (TODO: move elsewhere, duplicated code) + */ + if (reloc->type & macho_RELOC_EXT) { + reloc->rext = 1; + reloc->rsnum = xsymd->index; + /* 32 bit relocations require RIP relative */ + if (reloc->rlength < 3) { + if (reloc->type & macho_RELOC_RIP) { + reloc->rpcrel = 1; + reloc->rtype = X86_64_RELOC_BRANCH; + } else { + yasm_error_set(YASM_ERROR_NOT_CONSTANT, + N_("macho: sorry, cannot apply 32 bit absolute relocations in 64 bit mode.\n")); + yasm_errwarn_propagate(info->errwarns, reloc->line); + return -1; + } + } + } else { + if (!(reloc->type & macho_RELOC_SECTINT)) { + reloc->rsnum = xsymd->index; + reloc->rext = 1; + /* futile attempt to get 32 bit relocations working */ + if (reloc->rlength < 3) { + if (reloc->type & macho_RELOC_RIP) { + reloc->rpcrel = 1; + reloc->rtype = X86_64_RELOC_BRANCH; + } else { + yasm_error_set(YASM_ERROR_NOT_CONSTANT, + N_("macho: sorry, cannot apply 32 bit absolute relocations in 64 bit mode, consider \"[_symbol wrt rip]\" for mem access, \"dq _foo\" for pointers.\n")); + yasm_errwarn_propagate(info->errwarns, reloc->line); + return -1; + } + } +#if 0 + /*@dependent@ *//*@null@ */ yasm_section *dsect; + /*@dependent@ *//*@null@ */ yasm_bytecode *precbc; + int scnum = -1; + + dsect = NULL; + if (yasm_symrec_get_label(reloc->reloc.sym, &precbc)) { + if (precbc) + dsect = yasm_bc_get_section(precbc); + } + if (dsect) { + /*@dependent@ *//*@null@ */ macho_section_data *csectd; + + csectd = + yasm_section_get_data(dsect, &macho_section_data_cb); + if (csectd) + scnum = csectd->scnum; + } + if (scnum >= 0) { + /* section found, apply to struct */ + reloc->rsnum = scnum + 1; /* 0=ABSOLUTE, >0 section number for internal symbols */ + } +#endif + } + } + + YASM_WRITE_32_L(localbuf, (&reloc->rdummy)[1]); /* *urgh*, what kinda mess did I create here :-( */ + fwrite(info->buf, 8, 1, info->f); + + reloc = (macho_reloc *) yasm_section_reloc_next((yasm_reloc *)reloc); + } + + return 0; +} + +static int +macho_objfmt_output_relocs(yasm_section *sect, /*@null@*/ void *d) +{ + /*@null@*/ macho_objfmt_output_info *info = (macho_objfmt_output_info *)d; + /*@dependent@*/ /*@null@*/ macho_section_data *msd; + macho_reloc *reloc; + + /* FIXME: Don't output absolute sections into the section table */ + if (yasm_section_is_absolute(sect)) + return 0; + + assert(info != NULL); + msd = yasm_section_get_data(sect, &macho_section_data_cb); + assert(msd != NULL); + + /* No relocations to output? Go on to next section */ + if (msd->nreloc == 0) + return 0; + + reloc = (macho_reloc *) yasm_section_relocs_first(sect); + while (reloc) { + unsigned char *localbuf = info->buf; + /*@null@ */ macho_symrec_data *xsymd; + + xsymd = yasm_symrec_get_data(reloc->reloc.sym, &macho_symrec_data_cb); + if (!xsymd) { + /* hmpf: there must be a better way than string compare ... */ + const char *chk = yasm_symrec_get_name(reloc->reloc.sym); + + if ((strcmp(chk, "$") == 0) || (strcmp(chk, "$$") == 0)) { + reloc->rsnum = msd->scnum + 1; + reloc->type |= macho_RELOC_SECTINT; + if (strcmp(chk, "$") == 0) + reloc->type |= macho_RELOC_SECTINTL; + } else { + yasm_internal_error(N_ + ("macho: no symbol data for relocated symbol")); + } + } + yasm_intnum_get_sized(reloc->reloc.addr, localbuf, 4, 32, 0, 0, 0); + localbuf += 4; /* address of relocation */ + + /* find section where the symbol relates to (TODO: move elsewhere, duplicated code) */ + if (reloc->type & macho_RELOC_EXT) { + reloc->rext = 1; + reloc->rsnum = xsymd->index; + } else { + if (!(reloc->type & macho_RELOC_SECTINT)) { + /*@dependent@ *//*@null@ */ yasm_section *dsect; + /*@dependent@ *//*@null@ */ yasm_bytecode *precbc; + int scnum = -1; + + dsect = NULL; + if (yasm_symrec_get_label(reloc->reloc.sym, &precbc)) { + if (precbc) + dsect = yasm_bc_get_section(precbc); + } + if (dsect) { + /*@dependent@ *//*@null@ */ macho_section_data *csectd; + + csectd = + yasm_section_get_data(dsect, &macho_section_data_cb); + if (csectd) + scnum = csectd->scnum; + } + if (scnum >= 0) { + /* section found, apply to struct */ + reloc->rsnum = scnum + 1; /* 0=ABSOLUTE, >0 section number for internal symbols */ + } + } + } + + YASM_WRITE_32_L(localbuf, (&reloc->rdummy)[1]); /* *urgh*, what kinda mess did I create here :-( */ + fwrite(info->buf, 8, 1, info->f); + + reloc = (macho_reloc *) yasm_section_reloc_next((yasm_reloc *)reloc); + } + + return 0; +} + +static void +macho_objfmt_patch_withinfile(macho_reloc * reloc, yasm_intnum *value, + macho_objfmt_output_info *info, long pos) +{ + unsigned char *localbuf = info->buf; + unsigned long bytes; + + /* seek in file to current symbol scheduled for resetting */ + fseek(info->f, pos, SEEK_SET); + /* select type, write either 1,2 or 4 bytes to relocation (note: 64 bit relocations are apparently not supported in macho ?!) */ + bytes = 1 << reloc->rlength; /* 1,2,4 */ + yasm_intnum_get_sized(value, localbuf, bytes, bytes << 3, 0, 0, 0); + + fwrite(localbuf, 1, bytes, info->f); +} + +/* fix relocated symbols in file*/ +static int +macho_objfmt_fixup_relocs(yasm_section *sect, /*@null@*/ void *d) +{ + /*@null@*/ macho_objfmt_output_info *info = (macho_objfmt_output_info *)d; + /*@dependent@*/ /*@null@*/ macho_section_data *msd; + macho_reloc *reloc; + long filepos, sectpos; + yasm_intnum *val; + + /* no relocation fixes for 64 bit mode right now */ + if (info->is_64) + return 0; + + /* FIXME: Don't output absolute sections into the section table */ + if (yasm_section_is_absolute(sect)) + return 0; + + assert(info != NULL); + msd = yasm_section_get_data(sect, &macho_section_data_cb); + assert(msd != NULL); + + /* No relocations to output? Go on to next section */ + if (msd->nreloc == 0) + return 0; + + filepos = ftell(info->f); + if (filepos == -1) { + yasm__fatal(N_("could not get file position on output file")); + /*@notreached@ */ + return 1; + } + + sectpos = info->raw_section_off; /* first section in file */ + sectpos += msd->offset; /* first byte of current section in file */ + + reloc = (macho_reloc *)yasm_section_relocs_first(sect); + while (reloc) { + /*@null@ */ macho_symrec_data *xsymd; + + if (reloc->type & macho_RELOC_SECTINT) { + val = yasm_intnum_copy(reloc->file_symbol); + if (reloc->type & macho_RELOC_SECTINTL) + yasm_intnum_calc(val, YASM_EXPR_ADD, reloc->bcoffset); + /* patch */ + macho_objfmt_patch_withinfile(reloc, val, info, + (long)(sectpos + yasm_intnum_get_uint(reloc->reloc.addr))); + yasm_intnum_destroy(val); + } else { + xsymd = + yasm_symrec_get_data(reloc->reloc.sym, &macho_symrec_data_cb); + if (!xsymd) { + yasm_internal_error(N_ + ("macho: no symbol data for relocated symbol")); + } + if (reloc->type & macho_RELOC_EXT) { + /* no change for external symbols */ + } else { + /* FIXME: ABS SYMBOLS ?! */ + + /* retrieve symbol location in file */ + if (xsymd->value) { + val = yasm_intnum_copy(xsymd->value); + yasm_intnum_calc(val, YASM_EXPR_ADD, reloc->file_symbol); /* is this necessary ? */ + /* patch */ + macho_objfmt_patch_withinfile(reloc, val, info, + (long)(sectpos + + yasm_intnum_get_uint(reloc->reloc.addr))); + yasm_intnum_destroy(val); + } else { + yasm_warn_set(YASM_WARN_GENERAL, + N_("macho: cannot relocate symbol for macho file")); + } + } + } + + reloc = (macho_reloc *)yasm_section_reloc_next((yasm_reloc *)reloc); + } + + /* return file pos to original */ + filepos = (long)fseek(info->f, filepos, SEEK_SET); + if (filepos == -1) { + yasm__fatal(N_("could not get file position on output file")); + /*@notreached@ */ + return 1; + } + + return 0; +} + + + +static int +exp2_to_bits(unsigned long val) +{ + int ret = 0; + + while (val) { + val >>= 1; + ret++; + } + ret = (ret > 0) ? ret - 1 : 0; + + return ret; +} + + +static int +macho_objfmt_is_section_label(yasm_symrec *sym) +{ + /*@dependent@*/ /*@null@*/ yasm_section *sect; + /*@dependent@*/ /*@null@*/ yasm_bytecode *precbc; + + /* Look at symrec for value/scnum/etc. */ + if (yasm_symrec_get_label(sym, &precbc)) { + if (precbc) + sect = yasm_bc_get_section(precbc); + else + sect = NULL; + /* it's a label: get value and offset. + * If there is not a section, leave as debugging symbol. + */ + if (sect) { + if (strcmp(yasm_symrec_get_name(sym), + yasm_section_get_name(sect)) == 0) + return 1; /* don't store section names */ + } + } + return 0; +} + +static int +macho_objfmt_output_secthead(yasm_section *sect, /*@null@*/ void *d) +{ + /*@null@*/ macho_objfmt_output_info *info = (macho_objfmt_output_info *)d; + yasm_objfmt_macho *objfmt_macho; + /*@dependent@*/ /*@null@*/ macho_section_data *msd; + unsigned char *localbuf; + + /* Don't output absolute sections into the section table */ + if (yasm_section_is_absolute(sect)) + return 0; + + assert(info != NULL); + objfmt_macho = info->objfmt_macho; + msd = yasm_section_get_data(sect, &macho_section_data_cb); + assert(msd != NULL); + + localbuf = info->buf; + + fwrite(msd->sectname, 16, 1, info->f); + fwrite(msd->segname, 16, 1, info->f); + /* section address, size depend on 32/64 bit mode */ + YASM_WRITE_32_L(localbuf, info->s_addr); /* address in memory */ + if (info->is_64) + YASM_WRITE_32_L(localbuf, 0); /* 64-bit mode: upper 32 bits = 0 */ + YASM_WRITE_32_L(localbuf, msd->size); /* size in memory */ + if (info->is_64) + YASM_WRITE_32_L(localbuf, 0); /* 64-bit mode: upper 32 bits = 0 */ + + /* offset,align,reloff,nreloc,flags,reserved1,reserved2 are 32 bit */ + if ((msd->flags & SECTION_TYPE) != S_ZEROFILL) { + YASM_WRITE_32_L(localbuf, info->offset); + YASM_WRITE_32_L(localbuf, exp2_to_bits(yasm_section_get_align(sect))); + if (msd->nreloc) { + msd->flags |= S_ATTR_LOC_RELOC; + if (msd->extreloc) + msd->flags |= S_ATTR_EXT_RELOC; + YASM_WRITE_32_L(localbuf, + align32((long)(info->rel_base + info->s_reloff))); + YASM_WRITE_32_L(localbuf, msd->nreloc); /* nreloc */ + } else { + YASM_WRITE_32_L(localbuf, 0); + YASM_WRITE_32_L(localbuf, 0); + } + + info->offset += msd->size; /* section size */ + info->s_reloff += msd->nreloc * MACHO_RELINFO_SIZE; /* nreloc */ + } else { + YASM_WRITE_32_L(localbuf, 0); /* these are zero in BSS */ + YASM_WRITE_32_L(localbuf, 0); + YASM_WRITE_32_L(localbuf, 0); + YASM_WRITE_32_L(localbuf, 0); + } + + YASM_WRITE_32_L(localbuf, msd->flags); /* flags */ + YASM_WRITE_32_L(localbuf, 0); /* reserved 1 */ + YASM_WRITE_32_L(localbuf, 0); /* reserved 2 */ + + info->s_addr += msd->size; /* offset in memory */ + + if (info->is_64) + fwrite(info->buf, MACHO_SECTCMD64_SIZE - 32, 1, info->f); /* 2*16 byte strings already written */ + else + fwrite(info->buf, MACHO_SECTCMD_SIZE - 32, 1, info->f); /* 2*16 byte strings already written */ + + return 0; +} + + +static int +macho_objfmt_count_sym(yasm_symrec *sym, /*@null@*/ void *d) +{ + /*@null@*/ macho_objfmt_output_info *info = (macho_objfmt_output_info *)d; + const char *name; + +#ifdef AUTO_UNDERSCORE + yasm_sym_vis vis; +#endif + + assert(info != NULL); + if (info->all_syms || yasm_symrec_get_visibility(sym) != YASM_SYM_LOCAL) { + if (0 == macho_objfmt_is_section_label(sym)) { + /* Save index in symrec data */ + macho_symrec_data *sym_data = + yasm_symrec_get_data(sym, &macho_symrec_data_cb); + if (!sym_data) { + sym_data = yasm_xcalloc(sizeof(macho_symrec_data), 1); + yasm_symrec_add_data(sym, &macho_symrec_data_cb, sym_data); + } + sym_data->index = info->symindex; + info->symindex++; + + name = yasm_symrec_get_name(sym); /*printf("%s\n",name); */ + sym_data->add_uscore = 0; +#ifdef AUTO_UNDERSCORE + vis = yasm_symrec_get_visibility(sym); + if (vis & (YASM_SYM_EXTERN | YASM_SYM_COMMON | YASM_SYM_GLOBAL)) { + if (name[0] != '_') + sym_data->add_uscore = 1; + } +#endif + sym_data->length = strlen(name) + sym_data->add_uscore + 1; /* name length + delimiter */ + info->strlength += sym_data->length; + info->indx++; + } + } + return 0; +} + + +static int +macho_objfmt_output_symtable(yasm_symrec *sym, /*@null@*/ void *d) +{ + /*@null@*/ macho_objfmt_output_info *info = (macho_objfmt_output_info *)d; + yasm_sym_vis vis = yasm_symrec_get_visibility(sym); + + assert(info != NULL); + + if (info->all_syms || vis != YASM_SYM_LOCAL) { + const char *name = yasm_symrec_get_name(sym); + const yasm_expr *equ_val; + const yasm_intnum *intn; + unsigned long value = 0; + long scnum = -3; /* -3 = debugging symbol */ + /*@dependent@*/ /*@null@*/ yasm_section *sect; + /*@dependent@*/ /*@null@*/ yasm_bytecode *precbc; + unsigned long flags = 0; + unsigned char *localbuf; + yasm_intnum *val; + unsigned int long_int_bytes = (info->is_64) ? 8 : 4; + unsigned int n_type = 0, n_sect = 0, n_desc = 0; + macho_symrec_data *symd; + + val = yasm_intnum_create_uint(0); + + symd = yasm_symrec_get_data(sym, &macho_symrec_data_cb); + + /* Look at symrec for value/scnum/etc. */ + if (yasm_symrec_get_label(sym, &precbc)) { + if (precbc) + sect = yasm_bc_get_section(precbc); + else + sect = NULL; + /* it's a label: get value and offset. + * If there is not a section, leave as debugging symbol. + */ + if (sect) { + /*@dependent@*/ /*@null@*/ macho_section_data *csectd; + + if (strcmp + (yasm_symrec_get_name(sym), + yasm_section_get_name(sect)) == 0) { + /* don't store section names */ + yasm_intnum_destroy(val); + return 0; + } + csectd = yasm_section_get_data(sect, &macho_section_data_cb); + if (csectd) { + scnum = csectd->scnum; + n_type = N_SECT; + } else { + if (yasm_section_is_absolute(sect)) { + yasm_expr *abs_start; + + abs_start = + yasm_expr_copy(yasm_section_get_start(sect)); + intn = yasm_expr_get_intnum(&abs_start, 1); + if (!intn) { + yasm_error_set(YASM_ERROR_NOT_CONSTANT, + N_("absolute section start not an integer expression")); + yasm_errwarn_propagate(info->errwarns, + abs_start->line); + } else + value = yasm_intnum_get_uint(intn); + yasm_expr_destroy(abs_start); + + flags |= macho_SYM_EQU; + scnum = -2; /* -2 = absolute symbol */ + } else + yasm_internal_error(N_("didn't understand section")); + } + if (precbc) + value += yasm_bc_next_offset(precbc); + /* all values are subject to correction: base offset is first + * raw section, therefore add section offset + */ + if (csectd) + value += csectd->offset; + yasm_intnum_set_uint(val, value); + /*printf("%s offset %lx\n",name,value);*/ + } + } else if ((equ_val = yasm_symrec_get_equ(sym))) { + yasm_expr *equ_val_copy = yasm_expr_copy(equ_val); + + intn = yasm_expr_get_intnum(&equ_val_copy, 1); + if (!intn) { + if (vis & YASM_SYM_GLOBAL) { + yasm_error_set(YASM_ERROR_NOT_CONSTANT, + N_ + ("global EQU value not an integer expression")); + yasm_errwarn_propagate(info->errwarns, equ_val->line); + } + } else + value = yasm_intnum_get_uint(intn); + yasm_expr_destroy(equ_val_copy); + yasm_intnum_set_uint(val, value); + flags |= macho_SYM_EQU; + n_type = N_ABS; + scnum = -2; /* -2 = absolute symbol */ + } + + if (vis & YASM_SYM_EXTERN) { + n_type = N_EXT; + scnum = -1; + n_desc = REFERENCE_FLAG_UNDEFINED_LAZY; /* FIXME: see definition of REFERENCE_FLAG_* above */ + } else { + if (vis & YASM_SYM_COMMON) { + n_type = N_UNDF | N_EXT; + if (symd) { + intn = yasm_expr_get_intnum(&symd->size, 1); + if (!intn) { + yasm_error_set(YASM_ERROR_NOT_CONSTANT, + N_ + ("COMMON data size not an integer expression")); + yasm_errwarn_propagate(info->errwarns, + symd->size->line); + } else { + yasm_intnum_set_uint(val, yasm_intnum_get_uint(intn)); + } + } + /*printf("common symbol %s val %lu\n", name, yasm_intnum_get_uint(val));*/ + } else { + if (vis & YASM_SYM_GLOBAL) { + flags = macho_SYM_GLOBAL; + n_type |= N_EXT; + } + } + } + + localbuf = info->buf; + YASM_WRITE_32_L(localbuf, info->indx); /* offset in string table */ + YASM_WRITE_8(localbuf, n_type); /* type of symbol entry */ + n_sect = (scnum >= 0) ? scnum + 1 : NO_SECT; + YASM_WRITE_8(localbuf, n_sect); /* referring section where symbol is found */ + YASM_WRITE_16_L(localbuf, n_desc); /* extra description */ + yasm_intnum_get_sized(val, localbuf, long_int_bytes, ((long_int_bytes) << 3), 0, 0, 0); /* value/argument */ + localbuf += long_int_bytes; + if (symd) + symd->value = val; + else + yasm_intnum_destroy(val); + + info->indx += symd->length; + + fwrite(info->buf, 8 + long_int_bytes, 1, info->f); + } + + return 0; +} + + +static int +macho_objfmt_output_str(yasm_symrec *sym, /*@null@*/ void *d) +{ + /*@null@*/ macho_objfmt_output_info *info = (macho_objfmt_output_info *)d; + yasm_sym_vis vis = yasm_symrec_get_visibility(sym); + /*@null@*/ macho_symrec_data *xsymd; + + + assert(info != NULL); + + if (info->all_syms || vis != YASM_SYM_LOCAL) { + if (0 == macho_objfmt_is_section_label(sym)) { + const char *name = yasm_symrec_get_name(sym); + size_t len = strlen(name); + + xsymd = yasm_symrec_get_data(sym, &macho_symrec_data_cb); + if (xsymd->add_uscore) + fputc('_', info->f); + fwrite(name, len + 1, 1, info->f); + } + } + return 0; +} + + + +/* write object */ +static void +macho_objfmt_output(yasm_objfmt *objfmt, FILE *f, int all_syms, + /*@unused@*/ yasm_dbgfmt *df, yasm_errwarns *errwarns) +{ + yasm_objfmt_macho *objfmt_macho = (yasm_objfmt_macho *) objfmt; + macho_objfmt_output_info info; + unsigned char *localbuf; + unsigned long symtab_count = 0; + unsigned long headsize; + unsigned int macho_segcmdsize, macho_sectcmdsize, macho_nlistsize; + unsigned int macho_relinfosize, macho_segcmd; + unsigned int head_ncmds, head_sizeofcmds; + unsigned long fileoffset, fileoff_sections; + yasm_intnum *val; + unsigned long long_int_bytes; + const char pad_data[3] = "\0\0\0"; + + info.objfmt_macho = objfmt_macho; + info.errwarns = errwarns; + info.f = f; + info.buf = yasm_xmalloc(REGULAR_OUTBUF_SIZE); + + if (objfmt_macho->parse_scnum == 0) { + yasm_internal_error(N_("no sections defined")); + /*@notreached@*/ + return; + } + + val = yasm_intnum_create_uint(0); + + /* + * MACH-O Header, Seg CMD, Sect CMDs, Sym Tab, Reloc Data + */ + info.is_64 = (objfmt_macho->bits == 32) ? 0 : 1; + if (info.is_64) { + /* this works only when SYMBOLS and SECTIONS present */ + headsize = + MACHO_HEADER64_SIZE + MACHO_SEGCMD64_SIZE + + (MACHO_SECTCMD64_SIZE * (objfmt_macho->parse_scnum)) + + MACHO_SYMCMD_SIZE; + macho_segcmd = LC_SEGMENT_64; + macho_segcmdsize = MACHO_SEGCMD64_SIZE; + macho_sectcmdsize = MACHO_SECTCMD64_SIZE; + macho_nlistsize = MACHO_NLIST64_SIZE; + macho_relinfosize = MACHO_RELINFO64_SIZE; + long_int_bytes = 8; + } else { + headsize = + MACHO_HEADER_SIZE + MACHO_SEGCMD_SIZE + + (MACHO_SECTCMD_SIZE * (objfmt_macho->parse_scnum)) + + MACHO_SYMCMD_SIZE; + macho_segcmd = LC_SEGMENT; + macho_segcmdsize = MACHO_SEGCMD_SIZE; + macho_sectcmdsize = MACHO_SECTCMD_SIZE; + macho_nlistsize = MACHO_NLIST_SIZE; + macho_relinfosize = MACHO_RELINFO_SIZE; + long_int_bytes = 4; + } + + /* Get number of symbols */ + info.symindex = 0; + info.indx = 0; + info.strlength = 1; /* string table starts with a zero byte */ + info.all_syms = 1; /* force all syms into symbol table */ + yasm_symtab_traverse(objfmt_macho->symtab, &info, macho_objfmt_count_sym); + symtab_count = info.indx; + + /* write raw section data first */ + if (fseek(f, (long)headsize, SEEK_SET) < 0) { + yasm__fatal(N_("could not seek on output file")); + /*@notreached@ */ + return; + } + + /* get size of sections in memory (including BSS) and size of sections + * in file (without BSS) + */ + info.vmsize = 0; + info.filesize = 0; + info.raw_section_off = headsize; /* first section in file */ + yasm_object_sections_traverse(objfmt_macho->object, &info, + macho_objfmt_output_section); + + fileoff_sections = ftell(f); + + /* Write headers */ + if (fseek(f, 0, SEEK_SET) < 0) { + yasm__fatal(N_("could not seek on output file")); + /*@notreached@*/ + return; + } + + localbuf = info.buf; + + /* header size is common to 32 bit and 64 bit variants */ + if (info.is_64) { + YASM_WRITE_32_L(localbuf, MH_MAGIC_64); /* magic number */ + /* i386 64-bit ABI */ + YASM_WRITE_32_L(localbuf, CPU_ARCH_ABI64 | CPU_TYPE_I386); + } else { + YASM_WRITE_32_L(localbuf, MH_MAGIC); /* magic number */ + YASM_WRITE_32_L(localbuf, CPU_TYPE_I386); /* i386 32-bit ABI */ + } + /* i386 all cpu subtype compatible */ + YASM_WRITE_32_L(localbuf, CPU_SUBTYPE_I386_ALL); + YASM_WRITE_32_L(localbuf, MH_OBJECT); /* MACH file type */ + + /* calculate number of commands and their size, put to stream */ + head_ncmds = 0; + head_sizeofcmds = 0; + if (objfmt_macho->parse_scnum > 0) { + head_ncmds++; + head_sizeofcmds += + macho_segcmdsize + macho_sectcmdsize * objfmt_macho->parse_scnum; + } + if (symtab_count > 0) { + head_ncmds++; + head_sizeofcmds += MACHO_SYMCMD_SIZE; + } + + YASM_WRITE_32_L(localbuf, head_ncmds); + YASM_WRITE_32_L(localbuf, head_sizeofcmds); + YASM_WRITE_32_L(localbuf, 0); /* no flags (yet) */ + if (info.is_64) { + YASM_WRITE_32_L(localbuf, 0); /* reserved in 64 bit */ + fileoffset = MACHO_HEADER64_SIZE + head_sizeofcmds; + } else { + /* initial offset to first section */ + fileoffset = MACHO_HEADER_SIZE + head_sizeofcmds; + } + + /* --------------- write segment header command ---------------- */ + YASM_WRITE_32_L(localbuf, macho_segcmd); /* command LC_SEGMENT */ + /* size of load command including section load commands */ + YASM_WRITE_32_L(localbuf, + macho_segcmdsize + + macho_sectcmdsize * objfmt_macho->parse_scnum); + /* in an MH_OBJECT file all sections are in one unnamed (name all zeros) + * segment (16x0) + */ + YASM_WRITE_32_L(localbuf, 0); + YASM_WRITE_32_L(localbuf, 0); + YASM_WRITE_32_L(localbuf, 0); + YASM_WRITE_32_L(localbuf, 0); + + /* in-memory offset, in-memory size */ + yasm_intnum_set_uint(val, 0); /* offset in memory (vmaddr) */ + yasm_intnum_get_sized(val, localbuf, long_int_bytes, + ((long_int_bytes) << 3), 0, 0, 0); + localbuf += long_int_bytes; + yasm_intnum_set_uint(val, info.vmsize); /* size in memory (vmsize) */ + yasm_intnum_get_sized(val, localbuf, long_int_bytes, + ((long_int_bytes) << 3), 0, 0, 0); + localbuf += long_int_bytes; + /* offset in file to first section */ + yasm_intnum_set_uint(val, fileoffset); + yasm_intnum_get_sized(val, localbuf, long_int_bytes, + ((long_int_bytes) << 3), 0, 0, 0); + localbuf += long_int_bytes; + yasm_intnum_set_uint(val, info.filesize); /* overall size in file */ + yasm_intnum_get_sized(val, localbuf, long_int_bytes, + ((long_int_bytes) << 3), 0, 0, 0); + localbuf += long_int_bytes; + + YASM_WRITE_32_L(localbuf, VM_PROT_DEFAULT); /* VM protection, maximum */ + YASM_WRITE_32_L(localbuf, VM_PROT_DEFAULT); /* VM protection, initial */ + /* number of sections */ + YASM_WRITE_32_L(localbuf, objfmt_macho->parse_scnum); + YASM_WRITE_32_L(localbuf, 0); /* no flags */ + + /* write MACH-O header and segment command to outfile */ + fwrite(info.buf, (size_t) (localbuf - info.buf), 1, f); + + /* next: section headers */ + info.offset = fileoffset; /* store offset of first section */ + info.s_addr = 0; /* first section starts at address 0 */ + /* offset to relocs for first section */ + info.rel_base = align32((long)fileoffset + (long)info.filesize); + info.s_reloff = 0; /* offset for relocs of following sections */ + yasm_object_sections_traverse(objfmt_macho->object, &info, + macho_objfmt_output_secthead); + + localbuf = info.buf; + /* write out symbol command */ + YASM_WRITE_32_L(localbuf, LC_SYMTAB); /* cmd == LC_SYMTAB */ + YASM_WRITE_32_L(localbuf, MACHO_SYMCMD_SIZE); + /* symbol table offset */ + YASM_WRITE_32_L(localbuf, info.rel_base + info.s_reloff); + YASM_WRITE_32_L(localbuf, symtab_count); /* number of symbols */ + + YASM_WRITE_32_L(localbuf, macho_nlistsize * symtab_count + info.rel_base + + info.s_reloff); /* string table offset */ + YASM_WRITE_32_L(localbuf, info.strlength); /* string table size */ + /* write symbol command */ + fwrite(info.buf, (size_t)(localbuf - info.buf), 1, f); + + /*printf("num symbols %d, vmsize %d, filesize %d\n",symtab_count, + info.vmsize, info.filesize ); */ + + /* get back to end of raw section data */ + if (fseek(f, (long)fileoff_sections, SEEK_SET) < 0) { + yasm__fatal(N_("could not seek on output file")); + /*@notreached@ */ + return; + } + + /* padding to long boundary */ + if (info.rel_base - (fileoffset + info.filesize)) { + fwrite(pad_data, info.rel_base - (fileoffset + info.filesize), 1, f); + } + + /* relocation data */ + if (info.is_64) + yasm_object_sections_traverse(objfmt_macho->object, &info, + macho_objfmt_output_relocs64); + else + yasm_object_sections_traverse(objfmt_macho->object, &info, + macho_objfmt_output_relocs); + + /* symbol table (NLIST) */ + info.indx = 1; /* restart symbol table indices */ + yasm_symtab_traverse(objfmt_macho->symtab, &info, + macho_objfmt_output_symtable); + + /* symbol strings */ + fwrite(pad_data, 1, 1, f); + yasm_symtab_traverse(objfmt_macho->symtab, &info, + macho_objfmt_output_str); + + /* relocation fixup: set internal symbol locations into byte code within + * file. + */ + yasm_object_sections_traverse(objfmt_macho->object, &info, + macho_objfmt_fixup_relocs); + + yasm_intnum_destroy(val); + yasm_xfree(info.buf); +} + +static void +macho_objfmt_destroy(yasm_objfmt *objfmt) +{ + yasm_xfree(objfmt); +} + +static macho_section_data * +macho_objfmt_init_new_section(yasm_objfmt_macho * objfmt_macho, + yasm_section *sect, const char *sectname, + unsigned long line) +{ + macho_section_data *data; + yasm_symrec *sym; + + data = yasm_xmalloc(sizeof(macho_section_data)); + data->scnum = objfmt_macho->parse_scnum++; + data->segname = ""; + data->sectname = ""; + data->flags = S_REGULAR; + data->size = 0; + data->nreloc = 0; + data->offset = 0; + yasm_section_add_data(sect, &macho_section_data_cb, data); + + sym = yasm_symtab_define_label(objfmt_macho->symtab, sectname, + yasm_section_bcs_first(sect), 1, line); + data->sym = sym; + return data; +} + +static yasm_section * +macho_objfmt_add_default_section(yasm_objfmt *objfmt) +{ + yasm_objfmt_macho *objfmt_macho = (yasm_objfmt_macho *) objfmt; + yasm_section *retval; + macho_section_data *msd; + int isnew; + + retval = + yasm_object_get_general(objfmt_macho->object, ".text", 0, 0, 1, 0, + &isnew, 0); + if (isnew) { + msd = macho_objfmt_init_new_section(objfmt_macho, retval, ".text", 0); + yasm_section_set_default(retval, 1); + } + return retval; +} + +static /*@observer@*/ /*@null@*/ yasm_section * +macho_objfmt_section_switch(yasm_objfmt *objfmt, yasm_valparamhead *valparams, + /*@unused@*/ /*@null@*/ + yasm_valparamhead *objext_valparams, + unsigned long line) +{ + yasm_objfmt_macho *objfmt_macho = (yasm_objfmt_macho *) objfmt; + yasm_valparam *vp = yasm_vps_first(valparams); + yasm_section *retval; + int isnew; + const char *f_segname, *f_sectname; + unsigned long flags; + unsigned long align; + int flags_override = 0; + char *sectname; + int resonly = 0; + macho_section_data *msd; + size_t i; + + static const struct { + const char *in; + const char *seg; + const char *sect; + unsigned long flags; + unsigned long align; + } section_name_translation[] = { + {".text", "__TEXT", "__text", S_ATTR_PURE_INSTRUCTIONS, 0}, + {".const", "__TEXT", "__const", S_REGULAR, 0}, + {".static_const", "__TEXT", "__static_const", S_REGULAR, 0}, + {".cstring", "__TEXT", "__cstring", S_CSTRING_LITERALS, 0}, + {".literal4", "__TEXT", "__literal4", S_4BYTE_LITERALS, 4}, + {".literal8", "__TEXT", "__literal8", S_8BYTE_LITERALS, 8}, + {".literal16", "__TEXT", "__literal16", S_16BYTE_LITERALS, 16}, + {".constructor", "__TEXT", "__constructor", S_REGULAR, 0}, + {".destructor", "__TEXT", "__destructor", S_REGULAR, 0}, + {".fvmlib_init0", "__TEXT", "__fvmlib_init0", S_REGULAR, 0}, + {".fvmlib_init1", "__TEXT", "__fvmlib_init1", S_REGULAR, 0}, + {".mod_init_func", "__DATA", "__mod_init_func", + S_MOD_INIT_FUNC_POINTERS, 4}, + {".mod_term_func", "__DATA", "__mod_term_func", + S_MOD_TERM_FUNC_POINTERS, 4}, + {".dyld", "__DATA", "__dyld", S_REGULAR, 0}, + {".data", "__DATA", "__data", S_REGULAR, 0}, + {".static_data", "__DATA", "__static_data", S_REGULAR, 0}, + {".const_data", "__DATA", "__const", S_REGULAR, 0}, + {".rodata", "__DATA", "__const", S_REGULAR, 0}, + {".bss", "__DATA", "__bss", S_ZEROFILL, 0}, + {".objc_class_names", "__TEXT", "__cstring", S_CSTRING_LITERALS, 0}, + {".objc_meth_var_types","__TEXT", "__cstring", S_CSTRING_LITERALS, 0}, + {".objc_meth_var_names","__TEXT", "__cstring", S_CSTRING_LITERALS, 0}, + {".objc_selector_strs", "__OBJC", "__selector_strs", + S_CSTRING_LITERALS, 0}, + {".objc_class", "__OBJC", "__class", + S_ATTR_NO_DEAD_STRIP, 0}, + {".objc_meta_class", "__OBJC", "__meta_class", + S_ATTR_NO_DEAD_STRIP, 0}, + {".objc_string_object", "__OBJC", "__string_object", + S_ATTR_NO_DEAD_STRIP, 0}, + {".objc_protocol", "__OBJC", "__protocol", + S_ATTR_NO_DEAD_STRIP, 0}, + {".objc_cat_cls_meth", "__OBJC", "__cat_cls_meth", + S_ATTR_NO_DEAD_STRIP, 0}, + {".objc_cat_inst_meth", "__OBJC", "__cat_inst_meth", + S_ATTR_NO_DEAD_STRIP, 0}, + {".objc_cls_meth", "__OBJC", "__cls_meth", + S_ATTR_NO_DEAD_STRIP, 0}, + {".objc_inst_meth", "__OBJC", "__inst_meth", + S_ATTR_NO_DEAD_STRIP, 0}, + {".objc_message_refs", "__OBJC", "__message_refs", + S_LITERAL_POINTERS|S_ATTR_NO_DEAD_STRIP, 4}, + {".objc_cls_refs", "__OBJC", "__cls_refs", + S_LITERAL_POINTERS|S_ATTR_NO_DEAD_STRIP, 4}, + {".objc_module_info", "__OBJC", "__module_info", + S_ATTR_NO_DEAD_STRIP, 0}, + {".objc_symbols", "__OBJC", "__symbols", + S_ATTR_NO_DEAD_STRIP, 0}, + {".objc_category", "__OBJC", "__category", + S_ATTR_NO_DEAD_STRIP, 0}, + {".objc_class_vars", "__OBJC", "__class_vars", + S_ATTR_NO_DEAD_STRIP, 0}, + {".objc_instance_vars", "__OBJC", "__instance_vars", + S_ATTR_NO_DEAD_STRIP, 0} + }; + + if (!vp || vp->param || !vp->val) + return NULL; + + sectname = vp->val; + + /* translate .text,.data,.bss to __text,__data,__bss... */ + for (i=0; ival) { + yasm_warn_set(YASM_WARN_GENERAL, + N_("Unrecognized numeric qualifier")); + continue; + } + + flags_override = 1; + if (yasm__strcasecmp(vp->val, "align") == 0 && vp->param) { + /*@dependent@ *//*@null@ */ const yasm_intnum *align_expr; + + align_expr = yasm_expr_get_intnum(&vp->param, 0); + if (!align_expr) { + yasm_error_set(YASM_ERROR_VALUE, + N_("argument to `%s' is not an integer"), + vp->val); + return NULL; + } + align = yasm_intnum_get_uint(align_expr); + + /* Alignments must be a power of two. */ + if (!is_exp2(align)) { + yasm_error_set(YASM_ERROR_VALUE, + N_("argument to `%s' is not a power of two"), + vp->val); + return NULL; + } + + /* Check to see if alignment is supported size */ + if (align > 16384) { + yasm_error_set(YASM_ERROR_VALUE, + N_("macho implementation does not support alignments > 16384")); + return NULL; + } + } else + yasm_warn_set(YASM_WARN_GENERAL, + N_("Unrecognized qualifier `%s'"), vp->val); + } + + retval = + yasm_object_get_general(objfmt_macho->object, sectname, 0, align, 1, + resonly, &isnew, line); + + if (isnew) + msd = macho_objfmt_init_new_section(objfmt_macho, retval, sectname, + line); + else + msd = yasm_section_get_data(retval, &macho_section_data_cb); + + if (isnew || yasm_section_is_default(retval)) { + yasm_section_set_default(retval, 0); + msd->segname = f_segname; + msd->sectname = f_sectname; + msd->flags = flags; + yasm_section_set_align(retval, align, line); + } else if (flags_override) + yasm_warn_set(YASM_WARN_GENERAL, + N_("section flags ignored on section redeclaration")); + return retval; +} + +static void +macho_section_data_destroy(void *data) +{ + yasm_xfree(data); +} + +static void +macho_section_data_print(void *data, FILE *f, int indent_level) +{ + macho_section_data *msd = (macho_section_data *) data; + + fprintf(f, "%*ssym=\n", indent_level, ""); + yasm_symrec_print(msd->sym, f, indent_level + 1); + fprintf(f, "%*sscnum=%ld\n", indent_level, "", msd->scnum); + fprintf(f, "%*sflags=0x%lx\n", indent_level, "", msd->flags); + fprintf(f, "%*ssize=%ld\n", indent_level, "", msd->size); + fprintf(f, "%*snreloc=%ld\n", indent_level, "", msd->nreloc); + fprintf(f, "%*soffset=%ld\n", indent_level, "", msd->offset); +} + +static yasm_symrec * +macho_objfmt_extern_declare(yasm_objfmt *objfmt, const char *name, /*@unused@*/ + /*@null@*/ yasm_valparamhead *objext_valparams, + unsigned long line) +{ + yasm_objfmt_macho *objfmt_macho = (yasm_objfmt_macho *)objfmt; + + return yasm_symtab_declare(objfmt_macho->symtab, name, YASM_SYM_EXTERN, + line); +} + +static yasm_symrec * +macho_objfmt_global_declare(yasm_objfmt *objfmt, const char *name, /*@unused@*/ + /*@null@*/ yasm_valparamhead *objext_valparams, + unsigned long line) +{ + yasm_objfmt_macho *objfmt_macho = (yasm_objfmt_macho *)objfmt; + + return yasm_symtab_declare(objfmt_macho->symtab, name, YASM_SYM_GLOBAL, + line); +} + +static yasm_symrec * +macho_objfmt_common_declare(yasm_objfmt *objfmt, const char *name, + /*@only@*/ yasm_expr *size, + /*@unused@*/ /*@null@*/ + yasm_valparamhead *objext_valparams, + unsigned long line) +{ + yasm_objfmt_macho *objfmt_macho = (yasm_objfmt_macho *)objfmt; + yasm_symrec *sym; + macho_symrec_data *sym_data; + + sym = yasm_symtab_declare(objfmt_macho->symtab, name, YASM_SYM_COMMON, + line); + + sym_data = yasm_xmalloc(sizeof(macho_symrec_data)); + + sym_data->size = size; + yasm_symrec_add_data(sym, &macho_symrec_data_cb, sym_data); + return sym; +} + +static void +macho_symrec_data_destroy(void *data) +{ + macho_symrec_data *csymd = (macho_symrec_data *)data; + + if (csymd->size) + yasm_expr_destroy(csymd->size); + yasm_xfree(data); +} + +static void +macho_symrec_data_print(void *data, FILE *f, int indent_level) +{ + macho_symrec_data *msd = (macho_symrec_data *)data; + + fprintf(f, "%*ssize=", indent_level, ""); + if (msd->size) + yasm_expr_print(msd->size, f); + else + fprintf(f, "nil"); + fprintf(f, "\n"); + fprintf(f, "%*sindex=%ld\n", indent_level, "", msd->index); + fprintf(f, "%*svalue=", indent_level, ""); + if (msd->value) + fprintf(f, "%ld\n", yasm_intnum_get_int(msd->value)); + else + fprintf(f, "nil\n"); +} + + +static int +macho_objfmt_directive(/*@unused@*/ yasm_objfmt *objfmt, + /*@unused@*/ const char *name, + /*@unused@*/ yasm_valparamhead *valparams, + /*@unused@*/ /*@null@*/ + yasm_valparamhead *objext_valparams, + /*@unused@*/ unsigned long line) +{ + return 1; /* no objfmt directives */ +} + + +/* Define valid debug formats to use with this object format */ +static const char *macho_objfmt_dbgfmt_keywords[] = { + "null", + NULL +}; + +/* Define objfmt structure -- see objfmt.h for details */ +yasm_objfmt_module yasm_macho_LTX_objfmt = { + "Mac OS X ABI Mach-O File Format", + "macho", + "o", + 32, + macho_objfmt_dbgfmt_keywords, + "null", + macho_objfmt_create, + macho_objfmt_output, + macho_objfmt_destroy, + macho_objfmt_add_default_section, + macho_objfmt_section_switch, + macho_objfmt_extern_declare, + macho_objfmt_global_declare, + macho_objfmt_common_declare, + macho_objfmt_directive +}; + +yasm_objfmt_module yasm_macho32_LTX_objfmt = { + "Mac OS X ABI Mach-O File Format (32-bit)", + "macho32", + "o", + 32, + macho_objfmt_dbgfmt_keywords, + "null", + macho32_objfmt_create, + macho_objfmt_output, + macho_objfmt_destroy, + macho_objfmt_add_default_section, + macho_objfmt_section_switch, + macho_objfmt_extern_declare, + macho_objfmt_global_declare, + macho_objfmt_common_declare, + macho_objfmt_directive +}; + +yasm_objfmt_module yasm_macho64_LTX_objfmt = { + "Mac OS X ABI Mach-O File Format (64-bit)", + "macho64", + "o", + 64, + macho_objfmt_dbgfmt_keywords, + "null", + macho64_objfmt_create, + macho_objfmt_output, + macho_objfmt_destroy, + macho_objfmt_add_default_section, + macho_objfmt_section_switch, + macho_objfmt_extern_declare, + macho_objfmt_global_declare, + macho_objfmt_common_declare, + macho_objfmt_directive +}; diff --git a/modules/objfmts/macho/tests/Makefile.inc b/modules/objfmts/macho/tests/Makefile.inc new file mode 100644 index 00000000..5631a522 --- /dev/null +++ b/modules/objfmts/macho/tests/Makefile.inc @@ -0,0 +1,7 @@ +# $Id$ + +EXTRA_DIST += modules/objfmts/macho/tests/nasm32/Makefile.inc +EXTRA_DIST += modules/objfmts/macho/tests/nasm64/Makefile.inc + +include modules/objfmts/macho/tests/nasm32/Makefile.inc +include modules/objfmts/macho/tests/nasm64/Makefile.inc diff --git a/modules/objfmts/macho/tests/nasm32/Makefile.inc b/modules/objfmts/macho/tests/nasm32/Makefile.inc new file mode 100644 index 00000000..d7350b0f --- /dev/null +++ b/modules/objfmts/macho/tests/nasm32/Makefile.inc @@ -0,0 +1,9 @@ +# $Id$ + +TESTS += modules/objfmts/macho/tests/nasm32/macho32_test.sh + +EXTRA_DIST += modules/objfmts/macho/tests/nasm32/machotest.c +EXTRA_DIST += modules/objfmts/macho/tests/nasm32/machotest.asm +EXTRA_DIST += modules/objfmts/macho/tests/nasm32/machotest.hex +EXTRA_DIST += modules/objfmts/macho/tests/nasm32/reloc.asm +EXTRA_DIST += modules/objfmts/macho/tests/nasm32/reloc.hex diff --git a/modules/objfmts/macho/tests/nasm32/macho32_test.sh b/modules/objfmts/macho/tests/nasm32/macho32_test.sh new file mode 100755 index 00000000..64d9c4a3 --- /dev/null +++ b/modules/objfmts/macho/tests/nasm32/macho32_test.sh @@ -0,0 +1,4 @@ +#! /bin/sh +# $Id$ +${srcdir}/out_test.sh macho_test modules/objfmts/macho/tests/nasm32 "32-bit macho objfmt" "-f macho32" ".o" +exit $? diff --git a/modules/objfmts/macho/tests/nasm32/machotest.asm b/modules/objfmts/macho/tests/nasm32/machotest.asm new file mode 100644 index 00000000..23fa3b58 --- /dev/null +++ b/modules/objfmts/macho/tests/nasm32/machotest.asm @@ -0,0 +1,83 @@ +; test source file for assembling to MACH-O +; build with : +; yasm -f macho machotest.asm +; gcc -o machotest machotest.c machotest.o + +; This file should test the following: +; [1] Define and export a global text-section symbol +; [2] Define and export a global data-section symbol +; [3] Define and export a global BSS-section symbol +; [4] Define a non-global text-section symbol +; [5] Define a non-global data-section symbol +; [6] Define a non-global BSS-section symbol +; [7] Define a COMMON symbol +; [8] Define a NASM local label +; [9] Reference a NASM local label +; [10] Import an external symbol (note: printf replaced by another call) +; [11] Make a PC-relative call to an external symbol +; [12] Reference a text-section symbol in the text section +; [13] Reference a data-section symbol in the text section +; [14] Reference a BSS-section symbol in the text section +; [15] Reference a text-section symbol in the data section +; [16] Reference a data-section symbol in the data section +; [17] Reference a BSS-section symbol in the data section + +[BITS 32] +[GLOBAL _lrotate] ; [1] +[GLOBAL _greet] ; [1] +[GLOBAL _asmstr] ; [2] +[GLOBAL _textptr] ; [2] +[GLOBAL _selfptr] ; [2] +[GLOBAL _integer] ; [3] +[EXTERN _druck] ; [10] +[COMMON _commvar 4] ; [7] + +[SECTION .text] + +; prototype: long lrotate(long x, int num); +_lrotate: ; [1] + push ebp + mov ebp,esp + mov eax,[ebp+8] + mov ecx,[ebp+12] +.label rol eax,1 ; [4] [8] + loop .label ; [9] [12] + mov esp,ebp + pop ebp + ret + +; prototype: void greet(void); +_greet + mov eax,[_integer] ; [14] + inc eax + mov [localint],eax ; [14] + push dword [_commvar] + mov eax,[localptr] ; [13] + push dword [eax] + push dword [_integer] ; [1] [14] + push dword _printfstr ; [13] + call _druck ; [11] + add esp,16 + ret + +[SECTION .data] + +; a string +_asmstr db 'hello, world', 0 ; [2] + +; a string for Printf +_printfstr db "integer==%d, localint==%d, commvar=%d" + db 10, 0 + +; some pointers +localptr dd localint ; [5] [17] +_textptr dd _greet ; [15] +_selfptr dd _selfptr ; [16] + +[SECTION .bss] + +; an integer +_integer resd 1 ; [3] + +; a local integer +localint resd 1 ; [6] diff --git a/modules/objfmts/macho/tests/nasm32/machotest.c b/modules/objfmts/macho/tests/nasm32/machotest.c new file mode 100644 index 00000000..84badeed --- /dev/null +++ b/modules/objfmts/macho/tests/nasm32/machotest.c @@ -0,0 +1,45 @@ +/* + * test source file for assembling to ELF + * copied from cofftest.c; s/coff/elf/g + * build with (under Linux, for example): + * yasm -f elf elftest.asm + * gcc -o elftest elftest.c elftest.o + */ + +#include + +extern int lrotate(long, int); +extern void greet(void); +extern char asmstr[]; +extern void *selfptr; +extern void *textptr; +extern int integer, commvar; + +int main(void) { + + printf("Testing lrotate: should get 0x00400000, 0x00000001\n"); + printf("lrotate(0x00040000, 4) = 0x%08lx\n", lrotate(0x40000,4)); + printf("lrotate(0x00040000, 14) = 0x%08lx\n", lrotate(0x40000,14)); + + printf("This string should read `hello, world': `%s'\n", asmstr); + + printf("The integers here should be 1234, 1235 and 4321:\n"); + integer = 1234; + commvar = 4321; + greet(); + + printf("These pointers should be equal: %p and %p\n", + &greet, textptr); + + printf("So should these: %p and %p\n", selfptr, &selfptr); +} + +/* + there is no support for dynamically linkable objects in current + mach-o module. Therefore put "printf" statement here and redirect + the asm call to druck() +*/ +void druck( char *string, int a, int b, int c ) +{ + printf(string,a,b,c); +} diff --git a/modules/objfmts/macho/tests/nasm32/machotest.hex b/modules/objfmts/macho/tests/nasm32/machotest.hex new file mode 100644 index 00000000..56b8c1dc --- /dev/null +++ b/modules/objfmts/macho/tests/nasm32/machotest.hex @@ -0,0 +1,776 @@ +ce +fa +ed +fe +07 +00 +00 +00 +03 +00 +00 +00 +01 +00 +00 +00 +02 +00 +00 +00 +1c +01 +00 +00 +00 +00 +00 +00 +01 +00 +00 +00 +04 +01 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +85 +00 +00 +00 +38 +01 +00 +00 +7d +00 +00 +00 +07 +00 +00 +00 +07 +00 +00 +00 +03 +00 +00 +00 +00 +00 +00 +00 +5f +5f +74 +65 +78 +74 +00 +2e +63 +6f +6e +73 +74 +00 +5f +5f +5f +5f +54 +45 +58 +54 +00 +5f +5f +74 +65 +78 +74 +00 +2e +63 +00 +00 +00 +00 +3d +00 +00 +00 +38 +01 +00 +00 +00 +00 +00 +00 +b8 +01 +00 +00 +07 +00 +00 +00 +00 +03 +00 +80 +00 +00 +00 +00 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uhoh wrt $$ +;mov eax, hi+bye +;mov eax, bye+$ +;mov eax, hi-$ diff --git a/modules/objfmts/macho/tests/nasm32/reloc.hex b/modules/objfmts/macho/tests/nasm32/reloc.hex new file mode 100644 index 00000000..2c77b868 --- /dev/null +++ b/modules/objfmts/macho/tests/nasm32/reloc.hex @@ -0,0 +1,410 @@ +ce +fa +ed +fe +07 +00 +00 +00 +03 +00 +00 +00 +01 +00 +00 +00 +02 +00 +00 +00 +d8 +00 +00 +00 +00 +00 +00 +00 +01 +00 +00 +00 +c0 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +2b +00 +00 +00 +f4 +00 +00 +00 +2b +00 +00 +00 +07 +00 +00 +00 +07 +00 +00 +00 +02 +00 +00 +00 +00 +00 +00 +00 +5f +5f +74 +65 +78 +74 +00 +2e +63 +6f +6e +73 +74 +00 +5f +5f +5f +5f +54 +45 +58 +54 +00 +5f +5f +74 +65 +78 +74 +00 +2e +63 +00 +00 +00 +00 +28 +00 +00 +00 +f4 +00 +00 +00 +00 +00 +00 +00 +20 +01 +00 +00 +07 +00 +00 +00 +00 +03 +00 +80 +00 +00 +00 +00 +00 +00 +00 +00 +5f +5f +64 +61 +74 +61 +00 +2e +73 +74 +61 +74 +69 +63 +5f +64 +5f +5f +44 +41 +54 +41 +00 +5f 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b/modules/objfmts/macho/tests/nasm64/Makefile.inc new file mode 100644 index 00000000..d7bbfaae --- /dev/null +++ b/modules/objfmts/macho/tests/nasm64/Makefile.inc @@ -0,0 +1,9 @@ +# $Id$ + +TESTS += modules/objfmts/macho/tests/nasm64/macho64_test.sh + +EXTRA_DIST += modules/objfmts/macho/tests/nasm64/machotest64.c +EXTRA_DIST += modules/objfmts/macho/tests/nasm64/machotest64.asm +EXTRA_DIST += modules/objfmts/macho/tests/nasm64/machotest64.hex +EXTRA_DIST += modules/objfmts/macho/tests/nasm64/reloc64-err.asm +EXTRA_DIST += modules/objfmts/macho/tests/nasm64/reloc64-err.errwarn diff --git a/modules/objfmts/macho/tests/nasm64/macho64_test.sh b/modules/objfmts/macho/tests/nasm64/macho64_test.sh new file mode 100755 index 00000000..30e23248 --- /dev/null +++ b/modules/objfmts/macho/tests/nasm64/macho64_test.sh @@ -0,0 +1,4 @@ +#! /bin/sh +# $Id$ +${srcdir}/out_test.sh macho_test modules/objfmts/macho/tests/nasm64 "64-bit macho objfmt" "-f macho64" ".o" +exit $? diff --git a/modules/objfmts/macho/tests/nasm64/machotest64.asm b/modules/objfmts/macho/tests/nasm64/machotest64.asm new file mode 100644 index 00000000..2226e6f2 --- /dev/null +++ b/modules/objfmts/macho/tests/nasm64/machotest64.asm @@ -0,0 +1,107 @@ +; test source file for assembling to MACH-O +; build with : +; yasm -f macho -m amd64 machotest64.asm +; gcc -m64 -o machotest64 machotest64.c machotest64.o + +; This file should test the following: +; [1] Define and export a global text-section symbol +; [2] Define and export a global data-section symbol +; [3] Define and export a global BSS-section symbol +; [4] Define a non-global text-section symbol +; [5] Define a non-global data-section symbol +; [6] Define a non-global BSS-section symbol +; [7] Define a COMMON symbol +; [8] Define a NASM local label +; [9] Reference a NASM local label +; [10] Import an external symbol (note: printf replaced by another call) +; [11] Make a PC-relative call to an external symbol +; [12] Reference a text-section symbol in the text section +; [13] Reference a data-section symbol in the text section +; [14] Reference a BSS-section symbol in the text section +; [15] Reference a text-section symbol in the data section +; [16] Reference a data-section symbol in the data section +; [17] Reference a BSS-section symbol in the data section +; [18] Perform a 64 Bit relocation in the text section + +[BITS 64] +[GLOBAL _lrotate] ; [1] +[GLOBAL _greet] ; [1] +[GLOBAL _asmstr] ; [2] +[GLOBAL _textptr] ; [2] +[GLOBAL _selfptr] ; [2] +[GLOBAL _integer] ; [3] +[EXTERN _druck] ; [10] +[COMMON _commvar 4] ; [7] +[GLOBAL _getstr] ; +[GLOBAL _readgreet] ; + +[SECTION .text] + +; prototype: long lrotate(long x, int num); +_lrotate: ; [1] + push rcx + mov rax,rdi + mov rcx,rsi +.label rol rax,1 ; [4] [8] + loop .label ; [9] [12] + pop rcx + ret + +_getstr: + mov rax,qword _asmstr + ret + +_readgreet: + mov rax,[qword localint] ; [18] + ret + +_retrievelabel: + mov rax,[qword localptr] + ret + +; prototype: void greet(void); +; calls "void druck(a,b,c,d); +_greet mov rax,[_integer wrt rip] ; [14] + inc rax + mov [localint wrt rip],rax ; [14] + push rdi + push rsi + push rdx + push rcx + mov rdi,qword _printfstr + mov rsi,[_integer wrt rip] + mov rdx,[localptr wrt rip] + mov rdx,[rdx] + mov rcx,[_commvar wrt rip] + call _druck + pop rcx + pop rdx + pop rsi + pop rdi + ret + +[SECTION .data] + +; a string for Printf +_printfstr db "integer==%d, localint==%d, commvar=%d" + db 10, 0 + +; some pointers +localptr dq localint ; [5] [17] +_textptr dq _greet ; [15] +_selfptr dq _selfptr ; [16] + +;[section .data2 align=16] + +; a string +_asmstr db 'hello, world', 0 ; [2] + + + +[SECTION .bss] + +; an integer +_integer resq 1 ; [3] + +; a local integer +localint resq 1 ; [6] diff --git a/modules/objfmts/macho/tests/nasm64/machotest64.c b/modules/objfmts/macho/tests/nasm64/machotest64.c new file mode 100644 index 00000000..a77e5e5d --- /dev/null +++ b/modules/objfmts/macho/tests/nasm64/machotest64.c @@ -0,0 +1,56 @@ +/* + * test source file for assembling to Mach-O + * copied from cofftest.c, adapted to current limitations + * in Mach-O module + * build with (under OSX Tiger/Leopard, for example): + * yasm -f macho -m amd64 machotest64.asm + * gcc -m64 -o machotest64 machotest64.c machotest64.o + */ + +#include + +extern long lrotate(long, long); +extern void greet(void); +extern long readgreet(void); +extern char asmstr[]; +extern void *selfptr; +extern void *textptr; +extern int integer, commvar; +extern char *getstr(void); + +int main(void) { + + printf("Testing lrotate: should get 0x0000000000400000, 0x0000000000000001\n"); + printf("lrotate(0x00040000, 4 ) = 0x%016lx\n", lrotate(0x40000,4)); + printf("lrotate(0x00040000, 46) = 0x%016lx\n", lrotate(0x40000,46)); + + printf("This string should read `hello, world': `%s'\n", asmstr); + { + long a,b; + a = (long)asmstr; + b = (long)getstr(); + printf("The pointers %lx and %lx should be equal\n",a,b); + } + printf("This string should read `hello, world': `%s'\n", getstr()); + + printf("The integers here should be 1234, 1235 and 4321:\n"); + integer = 1234; + commvar = 4321; + greet(); + printf("The absolute addressing to the asm-local integer should yield in 1235:\n%ld\n",readgreet()); + + printf("These pointers should be equal: %p and %p\n", + &greet, textptr); + + printf("So should these: %p and %p\n", selfptr, &selfptr); +} + +/* + there is no support for dynamically linkable objects in current + mach-o module. Therefore put "printf" statement here and redirect + the asm call to druck() +*/ +void druck( char *string, int a, int b, int c ) +{ + printf(string,a,b,c); +} diff --git a/modules/objfmts/macho/tests/nasm64/machotest64.hex b/modules/objfmts/macho/tests/nasm64/machotest64.hex new file mode 100644 index 00000000..67ddc0c8 --- /dev/null +++ b/modules/objfmts/macho/tests/nasm64/machotest64.hex @@ -0,0 +1,1046 @@ +cf +fa +ed +fe +07 +00 +00 +01 +03 +00 +00 +00 +01 +00 +00 +00 +02 +00 +00 +00 +50 +01 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +19 +00 +00 +00 +38 +01 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +00 +cc +00 +00 +00 +00 +00 +00 +00 +70 +01 +00 +00 +00 +00 +00 +00 +bc +00 +00 +00 +00 +00 +00 +00 +07 +00 +00 +00 +07 +00 +00 +00 +03 +00 +00 +00 +00 +00 +00 +00 +5f +5f +74 +65 +78 +74 +00 +2e +63 +6f +6e +73 +74 +00 +5f +5f +5f +5f +54 +45 +58 +54 +00 +5f +5f +74 +65 +78 +74 +00 +2e +63 +00 +00 +00 +00 +00 +00 +00 +00 +70 +00 +00 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+[EXTERN hi] +[EXTERN hi] +[EXTERN bye] +[BITS 64] + mov rax, hi+2 + mov rax, bye + mov rax, [qword hi] + mov rdi, [rip+ hi] + mov rax, [bye+2] + mov rax, $$ + mov rax, $ + mov rax, $+4 +; the line below crashes yasm... +; mov rax, $-$$ +;mov eax, uhoh wrt $$ +;mov eax, hi+bye +;mov eax, bye+$ +;mov eax, hi-$ diff --git a/modules/objfmts/macho/tests/nasm64/reloc64-err.errwarn b/modules/objfmts/macho/tests/nasm64/reloc64-err.errwarn new file mode 100644 index 00000000..0a53a7cc --- /dev/null +++ b/modules/objfmts/macho/tests/nasm64/reloc64-err.errwarn @@ -0,0 +1,2 @@ +-:20: macho: sorry, cannot apply 32 bit absolute relocations in 64 bit mode. +