[deliverable/binutils-gdb.git] / gas / config / tc-ppc.h

/* tc-ppc.h -- Header file for tc-ppc.c.
   Copyright (C) 1994-2020 Free Software Foundation, Inc.
   Written by Ian Lance Taylor, Cygnus Support.

   This file is part of GAS, the GNU Assembler.

   GAS 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 3, or (at your option)
   any later version.

   GAS 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 GAS; see the file COPYING.  If not, write to the Free
   Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
   02110-1301, USA.  */

#define TC_PPC

#include "opcode/ppc.h"

struct fix;

/* Set the endianness we are using.  Default to big endian.  */
#ifndef TARGET_BYTES_BIG_ENDIAN
#define TARGET_BYTES_BIG_ENDIAN 1
#endif

/* If OBJ_COFF is defined, and TE_PE is not defined, we are assembling
   XCOFF for AIX or PowerMac.  If TE_PE is defined, we are assembling
   COFF for Windows NT.  */

#ifdef OBJ_COFF
#ifndef TE_PE
#define OBJ_XCOFF
#endif
#endif

/* The target BFD architecture.  */
#define TARGET_ARCH (ppc_arch ())
#define TARGET_MACH (ppc_mach ())
extern enum bfd_architecture ppc_arch (void);
extern unsigned long ppc_mach (void);

/* Whether or not the target is big endian */
extern int target_big_endian;

/* The target BFD format.  */
#define TARGET_FORMAT (ppc_target_format ())
extern const char *ppc_target_format (void);

/* Permit temporary numeric labels.  */
#define LOCAL_LABELS_FB 1

/* $ is used to refer to the current location.  */
#define DOLLAR_DOT

/* Strings do not use backslash escapes under COFF.  */
#ifdef OBJ_COFF
#define TC_STRING_ESCAPES 0
#endif

#ifdef OBJ_ELF
#define DIFF_EXPR_OK		/* foo-. gets turned into PC relative relocs */
#endif

#if TARGET_BYTES_BIG_ENDIAN
#define PPC_BIG_ENDIAN 1
#else
#define PPC_BIG_ENDIAN 0
#endif

/* We don't need to handle .word strangely.  */
#define WORKING_DOT_WORD

#define MAX_MEM_FOR_RS_ALIGN_CODE 4
#define HANDLE_ALIGN(FRAGP)						\
  if ((FRAGP)->fr_type == rs_align_code)				\
    ppc_handle_align (FRAGP);

extern unsigned int ppc_nop_select (void);
#define NOP_OPCODE ppc_nop_select ()

extern void ppc_handle_align (struct frag *);
extern void ppc_frag_check (struct frag *);

#ifdef OBJ_ELF
#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
#endif

#define md_frag_check(FRAGP) ppc_frag_check (FRAGP)

/* Arrange to store the value of ppc_cpu at the site of a fixup
   for later use in md_apply_fix.  */
struct _ppc_fix_extra
{
  ppc_cpu_t ppc_cpu;
};

extern ppc_cpu_t ppc_cpu;

#define TC_FIX_TYPE struct _ppc_fix_extra
#define TC_INIT_FIX_DATA(FIXP) \
  do { (FIXP)->tc_fix_data.ppc_cpu = ppc_cpu; } while (0)
\f
#ifdef TE_PE

/* Question marks are permitted in symbol names.  */
#define LEX_QM 1

/* Don't adjust TOC relocs.  */
#define tc_fix_adjustable(FIX) ppc_pe_fix_adjustable (FIX)
extern int ppc_pe_fix_adjustable (struct fix *);

#endif

#ifdef OBJ_XCOFF

/* Declarations needed when generating XCOFF code.  XCOFF is an
   extension of COFF, used only on the RS/6000.  Rather than create an
   obj-xcoff, we just use obj-coff, and handle the extensions here in
   tc-ppc.  */

/* We need to keep some information for symbols.  */
struct ppc_tc_sy
{
  /* We keep a few linked lists of symbols.  */
  symbolS *next;
  /* The real name, if the symbol was renamed.  */
  char *real_name;
  /* Non-zero if the symbol should be output.  The RS/6000 assembler
     only outputs symbols that are external or are mentioned in a
     .globl or .lglobl statement.  */
  unsigned char output;
  /* The symbol class.  */
  short symbol_class;
  /* For a csect or common symbol, the alignment to use.  */
  unsigned char align;
  /* For a csect symbol, the subsegment we are using.  This is zero
     for symbols that are not csects.  */
  subsegT subseg;
  /* For a csect symbol, the last symbol which has been defined in
     this csect, or NULL if none have been defined so far.
     For a .bs symbol, the referenced csect symbol.
     For a label, the enclosing csect.  */
  symbolS *within;
  union
  {
    /* For a function symbol, a symbol whose value is the size.  The
       field is NULL if there is no size.  */
    symbolS *size;
    /* For a dwarf symbol, the corresponding dwarf subsection.  */
    struct dw_subsection *dw;
  } u;
};

#define TC_SYMFIELD_TYPE struct ppc_tc_sy

/* We need an additional auxent for function symbols.  */
#define OBJ_COFF_MAX_AUXENTRIES 2

/* Square and curly brackets are permitted in symbol names.  */
#define LEX_BR 3

/* Canonicalize the symbol name.  */
#define tc_canonicalize_symbol_name(name) ppc_canonicalize_symbol_name (name)
extern char *ppc_canonicalize_symbol_name (char *);

/* Get the symbol class from the name.  */
#define tc_symbol_new_hook(sym) ppc_symbol_new_hook (sym)
extern void ppc_symbol_new_hook (symbolS *);

/* TOC relocs requires special handling.  */
#define tc_fix_adjustable(FIX) ppc_fix_adjustable (FIX)
extern int ppc_fix_adjustable (struct fix *);

/* We need to set the section VMA.  */
#define tc_frob_section(sec) ppc_frob_section (sec)
extern void ppc_frob_section (asection *);

/* Finish up the symbol.  */
#define tc_frob_symbol(sym, punt) punt = ppc_frob_symbol (sym)
extern int ppc_frob_symbol (symbolS *);

/* Finish up the entire symtab.  */
#define tc_adjust_symtab() ppc_adjust_symtab ()
extern void ppc_adjust_symtab (void);

/* We also need to copy, in particular, the class of the symbol,
   over what obj-coff would otherwise have copied.  */
#define OBJ_COPY_SYMBOL_ATTRIBUTES(dest,src)			\
do {								\
  if (SF_GET_GET_SEGMENT (dest))				\
    S_SET_SEGMENT (dest, S_GET_SEGMENT (src));			\
  symbol_get_tc (dest)->u = symbol_get_tc (src)->u;		\
  symbol_get_tc (dest)->align = symbol_get_tc (src)->align;	\
  symbol_get_tc (dest)->symbol_class = symbol_get_tc (src)->symbol_class;	\
  symbol_get_tc (dest)->within = symbol_get_tc (src)->within;	\
} while (0)

extern void ppc_xcoff_end (void);
#define md_end ppc_xcoff_end

#endif /* OBJ_XCOFF */

#define tc_new_dot_label(sym) ppc_new_dot_label (sym)
extern void ppc_new_dot_label (symbolS *);

extern const char       ppc_symbol_chars[];
#define tc_symbol_chars ppc_symbol_chars

#ifdef OBJ_ELF

/* Support for SHT_ORDERED */
extern int ppc_section_type (char *, size_t);
extern int ppc_section_flags (flagword, bfd_vma, int);

#define md_elf_section_type(STR, LEN)		ppc_section_type (STR, LEN)
#define md_elf_section_flags(FLAGS, ATTR, TYPE)	ppc_section_flags (FLAGS, ATTR, TYPE)

#define tc_comment_chars ppc_comment_chars
extern const char *ppc_comment_chars;

#define md_elf_section_letter		ppc_elf_section_letter
extern bfd_vma ppc_elf_section_letter (int, const char **);

/* Keep relocations relative to the GOT, or non-PC relative.  */
#define tc_fix_adjustable(FIX) ppc_fix_adjustable (FIX)
extern int ppc_fix_adjustable (struct fix *);

/* Values passed to md_apply_fix don't include symbol values.  */
#define MD_APPLY_SYM_VALUE(FIX) 0

#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
  ppc_elf_parse_cons (EXP, NBYTES)
extern bfd_reloc_code_real_type ppc_elf_parse_cons (expressionS *,
						    unsigned int);
#define TC_CONS_FIX_CHECK(EXP, NBYTES, FIX) \
  ppc_elf_cons_fix_check (EXP, NBYTES, FIX)
extern void ppc_elf_cons_fix_check (expressionS *, unsigned int, struct fix *);

#define tc_frob_file_before_adjust ppc_frob_file_before_adjust
extern void ppc_frob_file_before_adjust (void);

#define tc_adjust_symtab() ppc_elf_adjust_symtab ()
extern void ppc_elf_adjust_symtab (void);

extern void ppc_elf_end (void);
#define md_end ppc_elf_end

#endif /* OBJ_ELF */

#if defined (OBJ_ELF) || defined (OBJ_XCOFF)
#define TC_FORCE_RELOCATION(FIX) ppc_force_relocation (FIX)
extern int ppc_force_relocation (struct fix *);
#endif

#ifdef OBJ_ELF
/* Don't allow the generic code to convert fixups involving the
   subtraction of a label in the current section to pc-relative if we
   don't have the necessary pc-relative relocation.  */
#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) \
  (!((FIX)->fx_r_type == BFD_RELOC_64				\
     || (FIX)->fx_r_type == BFD_RELOC_32			\
     || (FIX)->fx_r_type == BFD_RELOC_16			\
     || (FIX)->fx_r_type == BFD_RELOC_LO16			\
     || (FIX)->fx_r_type == BFD_RELOC_HI16			\
     || (FIX)->fx_r_type == BFD_RELOC_HI16_S			\
     || (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGH		\
     || (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHA	\
     || (FIX)->fx_r_type == BFD_RELOC_PPC64_HIGHER		\
     || (FIX)->fx_r_type == BFD_RELOC_PPC64_HIGHER_S		\
     || (FIX)->fx_r_type == BFD_RELOC_PPC64_HIGHEST		\
     || (FIX)->fx_r_type == BFD_RELOC_PPC64_HIGHEST_S		\
     || (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHER34	\
     || (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHERA34	\
     || (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHEST34	\
     || (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHESTA34	\
     || (FIX)->fx_r_type == BFD_RELOC_PPC_16DX_HA		\
     || (FIX)->fx_r_type == BFD_RELOC_PPC64_D34			\
     || (FIX)->fx_r_type == BFD_RELOC_PPC64_D28))
#endif

#define TC_VALIDATE_FIX_SUB(FIX, SEG) 0

/* Various frobbings of labels and their addresses.  */
#define md_start_line_hook() ppc_start_line_hook ()
extern void ppc_start_line_hook (void);

/* Set the symbol class of a label based on the csect.  */
#define tc_frob_label(sym) ppc_frob_label (sym)
extern void ppc_frob_label (symbolS *);

/* call md_pcrel_from_section, not md_pcrel_from */
#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section(FIX, SEC)

#define md_parse_name(name, exp, mode, c) ppc_parse_name (name, exp)
extern int ppc_parse_name (const char *, struct expressionS *);

#define md_optimize_expr(left, op, right) ppc_optimize_expr (left, op, right)
extern int ppc_optimize_expr (expressionS *, operatorT, expressionS *);

#define md_operand(x)

#define md_cleanup() ppc_cleanup ()
extern void ppc_cleanup (void);

#if (defined TE_AIX5 || defined TE_AIX					\
     || defined TE_FreeBSD || defined TE_NetBSD || defined TE_LYNX)
/* ppc uses different register numbers between .eh_frame and .debug_frame.
   This macro translates the .eh_frame register numbers to .debug_frame
   register numbers.  */
#define md_reg_eh_frame_to_debug_frame(regno)				\
  ((regno) == 70 ? 64	/* cr2 */					\
   : (regno) == 65 ? 108 /* lr */					\
   : (regno) == 66 ? 109 /* ctr */					\
   : (regno) >= 68 && (regno) <= 75 ? (regno) + 86 - 68 /* crN */	\
   : (regno) == 76 ? 101 /* xer */					\
   : (regno) >= 77 && (regno) <= 108 ? (regno) + 1124 - 77 /* vrN */	\
   : (regno) == 109 ? 356 /* vrsave */					\
   : (regno) == 110 ? 67 /* vscr */					\
   : (regno) == 111 ? 99 /* spe_acc */					\
   : (regno) == 112 ? 612 /* spefscr */					\
   : (regno))
#endif

#define TARGET_USE_CFIPOP 1

#define tc_cfi_frame_initial_instructions ppc_cfi_frame_initial_instructions
extern void ppc_cfi_frame_initial_instructions (void);

#define tc_regname_to_dw2regnum tc_ppc_regname_to_dw2regnum
extern int tc_ppc_regname_to_dw2regnum (char *);

extern int ppc_cie_data_alignment;

extern int ppc_dwarf2_line_min_insn_length;

#define DWARF2_LINE_MIN_INSN_LENGTH     ppc_dwarf2_line_min_insn_length
#define DWARF2_DEFAULT_RETURN_COLUMN    0x41
#define DWARF2_CIE_DATA_ALIGNMENT       ppc_cie_data_alignment
#define EH_FRAME_ALIGNMENT		2
Commit	Line	Data
	1	/* tc-ppc.h -- Header file for tc-ppc.c.
	2	Copyright (C) 1994-2020 Free Software Foundation, Inc.
	3	Written by Ian Lance Taylor, Cygnus Support.
	4
	5	This file is part of GAS, the GNU Assembler.
	6
	7	GAS is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 3, or (at your option)
	10	any later version.
	11
	12	GAS is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with GAS; see the file COPYING. If not, write to the Free
	19	Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
	20	02110-1301, USA. */
	21
	22	#define TC_PPC
	23
	24	#include "opcode/ppc.h"
	25
	26	struct fix;
	27
	28	/* Set the endianness we are using. Default to big endian. */
	29	#ifndef TARGET_BYTES_BIG_ENDIAN
	30	#define TARGET_BYTES_BIG_ENDIAN 1
	31	#endif
	32
	33	/* If OBJ_COFF is defined, and TE_PE is not defined, we are assembling
	34	XCOFF for AIX or PowerMac. If TE_PE is defined, we are assembling
	35	COFF for Windows NT. */
	36
	37	#ifdef OBJ_COFF
	38	#ifndef TE_PE
	39	#define OBJ_XCOFF
	40	#endif
	41	#endif
	42
	43	/* The target BFD architecture. */
	44	#define TARGET_ARCH (ppc_arch ())
	45	#define TARGET_MACH (ppc_mach ())
	46	extern enum bfd_architecture ppc_arch (void);
	47	extern unsigned long ppc_mach (void);
	48
	49	/* Whether or not the target is big endian */
	50	extern int target_big_endian;
	51
	52	/* The target BFD format. */
	53	#define TARGET_FORMAT (ppc_target_format ())
	54	extern const char *ppc_target_format (void);
	55
	56	/* Permit temporary numeric labels. */
	57	#define LOCAL_LABELS_FB 1
	58
	59	/* $ is used to refer to the current location. */
	60	#define DOLLAR_DOT
	61
	62	/* Strings do not use backslash escapes under COFF. */
	63	#ifdef OBJ_COFF
	64	#define TC_STRING_ESCAPES 0
	65	#endif
	66
	67	#ifdef OBJ_ELF
	68	#define DIFF_EXPR_OK /* foo-. gets turned into PC relative relocs */
	69	#endif
	70
	71	#if TARGET_BYTES_BIG_ENDIAN
	72	#define PPC_BIG_ENDIAN 1
	73	#else
	74	#define PPC_BIG_ENDIAN 0
	75	#endif
	76
	77	/* We don't need to handle .word strangely. */
	78	#define WORKING_DOT_WORD
	79
	80	#define MAX_MEM_FOR_RS_ALIGN_CODE 4
	81	#define HANDLE_ALIGN(FRAGP) \
	82	if ((FRAGP)->fr_type == rs_align_code) \
	83	ppc_handle_align (FRAGP);
	84
	85	extern unsigned int ppc_nop_select (void);
	86	#define NOP_OPCODE ppc_nop_select ()
	87
	88	extern void ppc_handle_align (struct frag *);
	89	extern void ppc_frag_check (struct frag *);
	90
	91	#ifdef OBJ_ELF
	92	#define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0
	93	#endif
	94
	95	#define md_frag_check(FRAGP) ppc_frag_check (FRAGP)
	96
	97	/* Arrange to store the value of ppc_cpu at the site of a fixup
	98	for later use in md_apply_fix. */
	99	struct _ppc_fix_extra
	100	{
	101	ppc_cpu_t ppc_cpu;
	102	};
	103
	104	extern ppc_cpu_t ppc_cpu;
	105
	106	#define TC_FIX_TYPE struct _ppc_fix_extra
	107	#define TC_INIT_FIX_DATA(FIXP) \
	108	do { (FIXP)->tc_fix_data.ppc_cpu = ppc_cpu; } while (0)
	109	\f
	110	#ifdef TE_PE
	111
	112	/* Question marks are permitted in symbol names. */
	113	#define LEX_QM 1
	114
	115	/* Don't adjust TOC relocs. */
	116	#define tc_fix_adjustable(FIX) ppc_pe_fix_adjustable (FIX)
	117	extern int ppc_pe_fix_adjustable (struct fix *);
	118
	119	#endif
	120
	121	#ifdef OBJ_XCOFF
	122
	123	/* Declarations needed when generating XCOFF code. XCOFF is an
	124	extension of COFF, used only on the RS/6000. Rather than create an
	125	obj-xcoff, we just use obj-coff, and handle the extensions here in
	126	tc-ppc. */
	127
	128	/* We need to keep some information for symbols. */
	129	struct ppc_tc_sy
	130	{
	131	/* We keep a few linked lists of symbols. */
	132	symbolS *next;
	133	/* The real name, if the symbol was renamed. */
	134	char *real_name;
	135	/* Non-zero if the symbol should be output. The RS/6000 assembler
	136	only outputs symbols that are external or are mentioned in a
	137	.globl or .lglobl statement. */
	138	unsigned char output;
	139	/* The symbol class. */
	140	short symbol_class;
	141	/* For a csect or common symbol, the alignment to use. */
	142	unsigned char align;
	143	/* For a csect symbol, the subsegment we are using. This is zero
	144	for symbols that are not csects. */
	145	subsegT subseg;
	146	/* For a csect symbol, the last symbol which has been defined in
	147	this csect, or NULL if none have been defined so far.
	148	For a .bs symbol, the referenced csect symbol.
	149	For a label, the enclosing csect. */
	150	symbolS *within;
	151	union
	152	{
	153	/* For a function symbol, a symbol whose value is the size. The
	154	field is NULL if there is no size. */
	155	symbolS *size;
	156	/* For a dwarf symbol, the corresponding dwarf subsection. */
	157	struct dw_subsection *dw;
	158	} u;
	159	};
	160
	161	#define TC_SYMFIELD_TYPE struct ppc_tc_sy
	162
	163	/* We need an additional auxent for function symbols. */
	164	#define OBJ_COFF_MAX_AUXENTRIES 2
	165
	166	/* Square and curly brackets are permitted in symbol names. */
	167	#define LEX_BR 3
	168
	169	/* Canonicalize the symbol name. */
	170	#define tc_canonicalize_symbol_name(name) ppc_canonicalize_symbol_name (name)
	171	extern char ppc_canonicalize_symbol_name (char );
	172
	173	/* Get the symbol class from the name. */
	174	#define tc_symbol_new_hook(sym) ppc_symbol_new_hook (sym)
	175	extern void ppc_symbol_new_hook (symbolS *);
	176
	177	/* TOC relocs requires special handling. */
	178	#define tc_fix_adjustable(FIX) ppc_fix_adjustable (FIX)
	179	extern int ppc_fix_adjustable (struct fix *);
	180
	181	/* We need to set the section VMA. */
	182	#define tc_frob_section(sec) ppc_frob_section (sec)
	183	extern void ppc_frob_section (asection *);
	184
	185	/* Finish up the symbol. */
	186	#define tc_frob_symbol(sym, punt) punt = ppc_frob_symbol (sym)
	187	extern int ppc_frob_symbol (symbolS *);
	188
	189	/* Finish up the entire symtab. */
	190	#define tc_adjust_symtab() ppc_adjust_symtab ()
	191	extern void ppc_adjust_symtab (void);
	192
	193	/* We also need to copy, in particular, the class of the symbol,
	194	over what obj-coff would otherwise have copied. */
	195	#define OBJ_COPY_SYMBOL_ATTRIBUTES(dest,src) \
	196	do { \
	197	if (SF_GET_GET_SEGMENT (dest)) \
	198	S_SET_SEGMENT (dest, S_GET_SEGMENT (src)); \
	199	symbol_get_tc (dest)->u = symbol_get_tc (src)->u; \
	200	symbol_get_tc (dest)->align = symbol_get_tc (src)->align; \
	201	symbol_get_tc (dest)->symbol_class = symbol_get_tc (src)->symbol_class; \
	202	symbol_get_tc (dest)->within = symbol_get_tc (src)->within; \
	203	} while (0)
	204
	205	extern void ppc_xcoff_end (void);
	206	#define md_end ppc_xcoff_end
	207
	208	#endif /* OBJ_XCOFF */
	209
	210	#define tc_new_dot_label(sym) ppc_new_dot_label (sym)
	211	extern void ppc_new_dot_label (symbolS *);
	212
	213	extern const char ppc_symbol_chars[];
	214	#define tc_symbol_chars ppc_symbol_chars
	215
	216	#ifdef OBJ_ELF
	217
	218	/* Support for SHT_ORDERED */
	219	extern int ppc_section_type (char *, size_t);
	220	extern int ppc_section_flags (flagword, bfd_vma, int);
	221
	222	#define md_elf_section_type(STR, LEN) ppc_section_type (STR, LEN)
	223	#define md_elf_section_flags(FLAGS, ATTR, TYPE) ppc_section_flags (FLAGS, ATTR, TYPE)
	224
	225	#define tc_comment_chars ppc_comment_chars
	226	extern const char *ppc_comment_chars;
	227
	228	#define md_elf_section_letter ppc_elf_section_letter
	229	extern bfd_vma ppc_elf_section_letter (int, const char **);
	230
	231	/* Keep relocations relative to the GOT, or non-PC relative. */
	232	#define tc_fix_adjustable(FIX) ppc_fix_adjustable (FIX)
	233	extern int ppc_fix_adjustable (struct fix *);
	234
	235	/* Values passed to md_apply_fix don't include symbol values. */
	236	#define MD_APPLY_SYM_VALUE(FIX) 0
	237
	238	#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
	239	ppc_elf_parse_cons (EXP, NBYTES)
	240	extern bfd_reloc_code_real_type ppc_elf_parse_cons (expressionS *,
	241	unsigned int);
	242	#define TC_CONS_FIX_CHECK(EXP, NBYTES, FIX) \
	243	ppc_elf_cons_fix_check (EXP, NBYTES, FIX)
	244	extern void ppc_elf_cons_fix_check (expressionS , unsigned int, struct fix );
	245
	246	#define tc_frob_file_before_adjust ppc_frob_file_before_adjust
	247	extern void ppc_frob_file_before_adjust (void);
	248
	249	#define tc_adjust_symtab() ppc_elf_adjust_symtab ()
	250	extern void ppc_elf_adjust_symtab (void);
	251
	252	extern void ppc_elf_end (void);
	253	#define md_end ppc_elf_end
	254
	255	#endif /* OBJ_ELF */
	256
	257	#if defined (OBJ_ELF) \|\| defined (OBJ_XCOFF)
	258	#define TC_FORCE_RELOCATION(FIX) ppc_force_relocation (FIX)
	259	extern int ppc_force_relocation (struct fix *);
	260	#endif
	261
	262	#ifdef OBJ_ELF
	263	/* Don't allow the generic code to convert fixups involving the
	264	subtraction of a label in the current section to pc-relative if we
	265	don't have the necessary pc-relative relocation. */
	266	#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) \
	267	(!((FIX)->fx_r_type == BFD_RELOC_64 \
	268	\|\| (FIX)->fx_r_type == BFD_RELOC_32 \
	269	\|\| (FIX)->fx_r_type == BFD_RELOC_16 \
	270	\|\| (FIX)->fx_r_type == BFD_RELOC_LO16 \
	271	\|\| (FIX)->fx_r_type == BFD_RELOC_HI16 \
	272	\|\| (FIX)->fx_r_type == BFD_RELOC_HI16_S \
	273	\|\| (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGH \
	274	\|\| (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHA \
	275	\|\| (FIX)->fx_r_type == BFD_RELOC_PPC64_HIGHER \
	276	\|\| (FIX)->fx_r_type == BFD_RELOC_PPC64_HIGHER_S \
	277	\|\| (FIX)->fx_r_type == BFD_RELOC_PPC64_HIGHEST \
	278	\|\| (FIX)->fx_r_type == BFD_RELOC_PPC64_HIGHEST_S \
	279	\|\| (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHER34 \
	280	\|\| (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHERA34 \
	281	\|\| (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHEST34 \
	282	\|\| (FIX)->fx_r_type == BFD_RELOC_PPC64_ADDR16_HIGHESTA34 \
	283	\|\| (FIX)->fx_r_type == BFD_RELOC_PPC_16DX_HA \
	284	\|\| (FIX)->fx_r_type == BFD_RELOC_PPC64_D34 \
	285	\|\| (FIX)->fx_r_type == BFD_RELOC_PPC64_D28))
	286	#endif
	287
	288	#define TC_VALIDATE_FIX_SUB(FIX, SEG) 0
	289
	290	/* Various frobbings of labels and their addresses. */
	291	#define md_start_line_hook() ppc_start_line_hook ()
	292	extern void ppc_start_line_hook (void);
	293
	294	/* Set the symbol class of a label based on the csect. */
	295	#define tc_frob_label(sym) ppc_frob_label (sym)
	296	extern void ppc_frob_label (symbolS *);
	297
	298	/* call md_pcrel_from_section, not md_pcrel_from */
	299	#define MD_PCREL_FROM_SECTION(FIX, SEC) md_pcrel_from_section(FIX, SEC)
	300
	301	#define md_parse_name(name, exp, mode, c) ppc_parse_name (name, exp)
	302	extern int ppc_parse_name (const char , struct expressionS );
	303
	304	#define md_optimize_expr(left, op, right) ppc_optimize_expr (left, op, right)
	305	extern int ppc_optimize_expr (expressionS , operatorT, expressionS );
	306
	307	#define md_operand(x)
	308
	309	#define md_cleanup() ppc_cleanup ()
	310	extern void ppc_cleanup (void);
	311
	312	#if (defined TE_AIX5 \|\| defined TE_AIX \
	313	\|\| defined TE_FreeBSD \|\| defined TE_NetBSD \|\| defined TE_LYNX)
	314	/* ppc uses different register numbers between .eh_frame and .debug_frame.
	315	This macro translates the .eh_frame register numbers to .debug_frame
	316	register numbers. */
	317	#define md_reg_eh_frame_to_debug_frame(regno) \
	318	((regno) == 70 ? 64 /* cr2 */ \
	319	: (regno) == 65 ? 108 /* lr */ \
	320	: (regno) == 66 ? 109 /* ctr */ \
	321	: (regno) >= 68 && (regno) <= 75 ? (regno) + 86 - 68 /* crN */ \
	322	: (regno) == 76 ? 101 /* xer */ \
	323	: (regno) >= 77 && (regno) <= 108 ? (regno) + 1124 - 77 /* vrN */ \
	324	: (regno) == 109 ? 356 /* vrsave */ \
	325	: (regno) == 110 ? 67 /* vscr */ \
	326	: (regno) == 111 ? 99 /* spe_acc */ \
	327	: (regno) == 112 ? 612 /* spefscr */ \
	328	: (regno))
	329	#endif
	330
	331	#define TARGET_USE_CFIPOP 1
	332
	333	#define tc_cfi_frame_initial_instructions ppc_cfi_frame_initial_instructions
	334	extern void ppc_cfi_frame_initial_instructions (void);
	335
	336	#define tc_regname_to_dw2regnum tc_ppc_regname_to_dw2regnum
	337	extern int tc_ppc_regname_to_dw2regnum (char *);
	338
	339	extern int ppc_cie_data_alignment;
	340
	341	extern int ppc_dwarf2_line_min_insn_length;
	342
	343	#define DWARF2_LINE_MIN_INSN_LENGTH ppc_dwarf2_line_min_insn_length
	344	#define DWARF2_DEFAULT_RETURN_COLUMN 0x41
	345	#define DWARF2_CIE_DATA_ALIGNMENT ppc_cie_data_alignment
	346	#define EH_FRAME_ALIGNMENT 2