/* tc-ppc.h -- Header file for tc-ppc.c.
- Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
- 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 1994-2024 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 2, or (at your option)
+ 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,
#define TC_PPC
+#include "opcode/ppc.h"
+
struct fix;
/* Set the endianness we are using. Default to 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. */
-
+/* If OBJ_COFF is defined we are assembling XCOFF for AIX or PowerMac. */
#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 PARAMS ((void));
-extern unsigned long ppc_mach PARAMS ((void));
+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 char *ppc_target_format PARAMS ((void));
+extern const char *ppc_target_format (void);
/* Permit temporary numeric labels. */
#define LOCAL_LABELS_FB 1
/* Strings do not use backslash escapes under COFF. */
#ifdef OBJ_COFF
-#define NO_STRING_ESCAPES
+#define TC_STRING_ESCAPES 0
#endif
#ifdef OBJ_ELF
#define MAX_MEM_FOR_RS_ALIGN_CODE 4
#define HANDLE_ALIGN(FRAGP) \
- if ((FRAGP)->fr_type == rs_align_code) \
- { \
- valueT count = ((FRAGP)->fr_next->fr_address \
- - ((FRAGP)->fr_address + (FRAGP)->fr_fix)); \
- if (count != 0 && (count & 3) == 0) \
- { \
- char *dest = (FRAGP)->fr_literal + (FRAGP)->fr_fix; \
- \
- (FRAGP)->fr_var = 4; \
- if (target_big_endian) \
- { \
- *dest++ = 0x60; \
- *dest++ = 0; \
- *dest++ = 0; \
- *dest++ = 0; \
- } \
- else \
- { \
- *dest++ = 0; \
- *dest++ = 0; \
- *dest++ = 0; \
- *dest++ = 0x60; \
- } \
- } \
- }
-
-#define md_frag_check(FRAGP) \
- if ((FRAGP)->has_code \
- && (((FRAGP)->fr_address + (FRAGP)->insn_addr) & 3) != 0) \
- as_bad_where ((FRAGP)->fr_file, (FRAGP)->fr_line, \
- _("instruction address is not a multiple of 4"));
-\f
-#ifdef TE_PE
+ if ((FRAGP)->fr_type == rs_align_code) \
+ ppc_handle_align (FRAGP);
-/* Question marks are permitted in symbol names. */
-#define LEX_QM 1
+extern unsigned int ppc_nop_select (void);
+#define NOP_OPCODE ppc_nop_select ()
-/* Don't adjust TOC relocs. */
-#define tc_fix_adjustable(FIX) ppc_pe_fix_adjustable (FIX)
-extern int ppc_pe_fix_adjustable PARAMS ((struct fix *));
+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 OBJ_XCOFF
/* Declarations needed when generating XCOFF code. XCOFF is an
{
/* 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. */
- int output;
+ unsigned char output;
/* The symbol class. */
- int class;
- /* The real name, if the symbol was renamed. */
- char *real_name;
+ 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 or common symbol, the alignment to use. */
- int align;
- /* For a function symbol, a symbol whose value is the size. The
- field is NULL if there is no size. */
- symbolS *size;
/* 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. */
+ this csect, or NULL if none have been defined so far.
+ For a .bs symbol, the referenced csect symbol.
+ For a C_STSYM symbol, the containing block (.bs 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
+#define OBJ_COFF_MAX_AUXENTRIES 4
/* 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 PARAMS ((char *));
+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 PARAMS ((symbolS *));
-
-/* 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 PARAMS ((symbolS *));
+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 PARAMS ((struct 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 PARAMS ((asection *));
+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 PARAMS ((symbolS *));
+extern int ppc_frob_symbol (symbolS *);
/* Finish up the entire symtab. */
#define tc_adjust_symtab() ppc_adjust_symtab ()
-extern void ppc_adjust_symtab PARAMS ((void));
+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. */
do { \
if (SF_GET_GET_SEGMENT (dest)) \
S_SET_SEGMENT (dest, S_GET_SEGMENT (src)); \
- symbol_get_tc (dest)->size = symbol_get_tc (src)->size; \
+ symbol_get_tc (dest)->u = symbol_get_tc (src)->u; \
symbol_get_tc (dest)->align = symbol_get_tc (src)->align; \
- symbol_get_tc (dest)->class = symbol_get_tc (src)->class; \
+ 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_md_finish (void);
+#define md_finish ppc_xcoff_md_finish
+
+#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
+ ppc_xcoff_parse_cons (EXP, NBYTES)
+extern bfd_reloc_code_real_type ppc_xcoff_parse_cons (expressionS *,
+ unsigned int);
+/* XCOFF format allows only few predefined sections. Gather all
+ information in a common structure. */
+struct ppc_xcoff_section {
+ /* Main segment of the section. */
+ segT segment;
+
+ /* Next subsegment to allocate within the segment. */
+ subsegT next_subsegment;
+
+ /* Linked list of csects in the section. */
+ symbolS *csects;
+};
+
#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 SHF_EXCLUDE and SHT_ORDERED */
-extern int ppc_section_letter PARAMS ((int, char **));
-extern int ppc_section_type PARAMS ((char *, size_t));
-extern int ppc_section_word PARAMS ((char *, size_t));
-extern int ppc_section_flags PARAMS ((int, int, int));
+/* 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_letter(LETTER, PTR_MSG) ppc_section_letter (LETTER, PTR_MSG)
#define md_elf_section_type(STR, LEN) ppc_section_type (STR, LEN)
-#define md_elf_section_word(STR, LEN) ppc_section_word (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 PARAMS ((struct 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 PARAMS ((void));
+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_md_finish (void);
+#define md_finish ppc_elf_md_finish
#endif /* OBJ_ELF */
+extern void ppc_md_end (void);
+#define md_end ppc_md_end
+
#if defined (OBJ_ELF) || defined (OBJ_XCOFF)
#define TC_FORCE_RELOCATION(FIX) ppc_force_relocation (FIX)
-extern int ppc_force_relocation PARAMS ((struct 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 /* OBJ_ELF */
+
+#define RELOC_EXPANSION_POSSIBLE
+#define MAX_RELOC_EXPANSION 2
+
+#if defined (OBJ_XCOFF)
+/* Force a relocation when the fix is negative. */
+#define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
+ (GENERIC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
+ || (((SEG)->flags & SEC_DEBUGGING) == 0 \
+ && (FIX)->fx_addsy && (FIX)->fx_subsy \
+ && (S_GET_VALUE (fixP->fx_addsy) < S_GET_VALUE (fixP->fx_subsy))))
+
+/* XCOFF allows undefined differences which will be encoded with
+ R_NEG relocations. */
+#define UNDEFINED_DIFFERENCE_OK
+
+#define TC_VALIDATE_FIX_SUB(FIX, SEG) \
+ (md_register_arithmetic || (SEG) != reg_section)
+
+#endif /* OBJ_XCOFF */
+
+/* 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)
-extern long md_pcrel_from_section PARAMS ((struct fix *, segT));
-#define md_parse_name(name, exp, mode, c) ppc_parse_name (name, exp)
-extern int ppc_parse_name PARAMS ((const char *, struct expressionS *));
+#define md_parse_name(name, exp, mode, c) \
+ (ppc_parse_name (name, exp, mode), true)
+extern void ppc_parse_name (const char *, struct expressionS *, enum expr_mode);
-#define md_operand(x)
+#define md_optimize_expr(left, op, right) ppc_optimize_expr (left, op, right)
+extern int ppc_optimize_expr (expressionS *, operatorT, expressionS *);
#define md_cleanup() ppc_cleanup ()
- extern void ppc_cleanup PARAMS ((void));
+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 PARAMS ((void));
+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 PARAMS ((const char *regname));
+extern int tc_ppc_regname_to_dw2regnum (char *);
extern int ppc_cie_data_alignment;
-#define DWARF2_LINE_MIN_INSN_LENGTH 4
+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
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