root/src/cmd/ld/macho.h

INCLUDED FROM

// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

typedef struct MachoHdr MachoHdr;
struct MachoHdr {
        uint32  cpu;
        uint32  subcpu;
};

typedef struct MachoSect MachoSect;
struct MachoSect {
        char*   name;
        char*   segname;
        uint64  addr;
        uint64  size;
        uint32  off;
        uint32  align;
        uint32  reloc;
        uint32  nreloc;
        uint32  flag;
        uint32  res1;
        uint32  res2;
};

typedef struct MachoSeg MachoSeg;
struct MachoSeg {
        char*   name;
        uint64  vsize;
        uint64  vaddr;
        uint64  fileoffset;
        uint64  filesize;
        uint32  prot1;
        uint32  prot2;
        uint32  nsect;
        uint32  msect;
        MachoSect       *sect;
        uint32  flag;
};

typedef struct MachoLoad MachoLoad;
struct MachoLoad {
        uint32  type;
        uint32  ndata;
        uint32  *data;
};

MachoHdr*       getMachoHdr(void);
MachoSeg*       newMachoSeg(char*, int);
MachoSect*      newMachoSect(MachoSeg*, char*, char*);
MachoLoad*      newMachoLoad(uint32, uint32);
int     machowrite(void);
void    machoinit(void);
void    machosymorder(void);
void    machoemitreloc(void);
int     machoreloc1(Reloc*, vlong);

/*
 * Total amount of space to reserve at the start of the file
 * for Header, PHeaders, and SHeaders.
 * May waste some.
 */
#define INITIAL_MACHO_HEADR     4*1024

enum {
        MACHO_CPU_AMD64 = (1<<24)|7,
        MACHO_CPU_386 = 7,
        MACHO_SUBCPU_X86 = 3,

        MACHO32SYMSIZE = 12,
        MACHO64SYMSIZE = 16,
        
        MACHO_X86_64_RELOC_UNSIGNED = 0,
        MACHO_X86_64_RELOC_SIGNED = 1,
        MACHO_X86_64_RELOC_BRANCH = 2,
        MACHO_X86_64_RELOC_GOT_LOAD = 3,
        MACHO_X86_64_RELOC_GOT = 4,
        MACHO_X86_64_RELOC_SUBTRACTOR = 5,
        MACHO_X86_64_RELOC_SIGNED_1 = 6,
        MACHO_X86_64_RELOC_SIGNED_2 = 7,
        MACHO_X86_64_RELOC_SIGNED_4 = 8,
        
        MACHO_GENERIC_RELOC_VANILLA = 0,
        
        MACHO_FAKE_GOTPCREL = 100,
};

void    domacho(void);
vlong   domacholink(void);
void    asmbmacho(void);
void    machoadddynlib(char*);