/* tc-ppc.h -- Header file for tc-ppc.c.
- Copyright (C) 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
+ Copyright (C) 1994-2021 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,
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, 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
#define TC_PPC
-#ifdef ANSI_PROTOTYPES
+#include "opcode/ppc.h"
+
struct fix;
-#endif
/* Set the endianness we are using. Default to big endian. */
#ifndef TARGET_BYTES_BIG_ENDIAN
#define TARGET_BYTES_BIG_ENDIAN 1
#endif
-#ifndef BFD_ASSEMBLER
- #error PowerPC support requires BFD_ASSEMBLER
-#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 ())
-extern enum bfd_architecture ppc_arch PARAMS ((void));
+#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. */
-#ifdef OBJ_COFF
-#ifdef TE_PE
-#define TARGET_FORMAT (target_big_endian ? "pe-powerpc" : "pe-powerpcle")
-#else
-#define TARGET_FORMAT "aixcoff-rs6000"
-#endif
-#endif
-
-/* PowerMac has a BFD slightly different from AIX's. */
-#ifdef TE_POWERMAC
-#ifdef TARGET_FORMAT
-#undef TARGET_FORMAT
-#endif
-#define TARGET_FORMAT "xcoff-powermac"
-#endif
-
-#ifdef OBJ_ELF
-#define TARGET_FORMAT (target_big_endian ? "elf32-powerpc" : "elf32-powerpcle")
-#endif
+#define TARGET_FORMAT (ppc_target_format ())
+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
/* We don't need to handle .word strangely. */
#define WORKING_DOT_WORD
-/* We set the fx_done field appropriately in md_apply_fix. */
-#define TC_HANDLES_FX_DONE
-\f
-#ifdef TE_PE
+#define MAX_MEM_FOR_RS_ALIGN_CODE 4
+#define HANDLE_ALIGN(FRAGP) \
+ 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(fixp) ppc_pe_fix_adjustable (fixp)
-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
struct ppc_tc_sy
{
/* We keep a few linked lists of symbols. */
- struct symbol *next;
+ 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. */
- struct symbol *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. */
- struct symbol *within;
+ 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
/* 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 ((struct symbol *));
-
-/* 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 ((struct symbol *));
+extern void ppc_symbol_new_hook (symbolS *);
/* TOC relocs requires special handling. */
-#define tc_fix_adjustable(fixp) ppc_fix_adjustable (fixp)
-extern int ppc_fix_adjustable PARAMS ((struct fix *));
-
-/* A relocation from one csect to another must be kept. */
-#define TC_FORCE_RELOCATION(FIXP) ppc_force_relocation (FIXP)
-extern int ppc_force_relocation PARAMS ((struct fix *));
+#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 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 ((struct symbol *));
+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));
-
-/* Niclas Andersson <nican@ida.liu.se> says this is needed. */
-#define SUB_SEGMENT_ALIGN(SEG) 2
+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
-/* Branch prediction relocations must force relocation. */
-#define TC_FORCE_RELOCATION_SECTION(FIXP,SEC) \
-((FIXP)->fx_r_type == BFD_RELOC_PPC_B16_BRTAKEN \
- || (FIXP)->fx_r_type == BFD_RELOC_PPC_B16_BRNTAKEN \
- || (FIXP)->fx_r_type == BFD_RELOC_PPC_BA16_BRTAKEN \
- || (FIXP)->fx_r_type == BFD_RELOC_PPC_BA16_BRNTAKEN \
- || ((FIXP)->fx_addsy && !(FIXP)->fx_subsy && (FIXP)->fx_addsy->bsym \
- && (FIXP)->fx_addsy->bsym->section != SEC))
-
-/* Support for SHF_EXCLUDE and SHT_ORDERED */
-extern int ppc_section_letter PARAMS ((int, char **));
-extern int ppc_section_type PARAMS ((char **));
-extern int ppc_section_word PARAMS ((char **));
-extern int ppc_section_flags PARAMS ((int, int, int));
-
-#define md_elf_section_letter(LETTER, PTR_MSG) ppc_section_letter (LETTER, PTR_MSG)
-#define md_elf_section_type(PTR_STR) ppc_section_type (PTR_STR)
-#define md_elf_section_word(PTR_STR) ppc_section_word (PTR_STR)
-#define md_elf_section_flags(FLAGS, ATTR, TYPE) ppc_section_flags (FLAGS, ATTR, TYPE)
+/* Support for SHT_ORDERED */
+extern int ppc_section_type (char *, size_t);
+extern int ppc_section_flags (flagword, bfd_vma, int);
-/* Add extra PPC sections -- Note, for now, make .sbss2 and .PPC.EMB.sbss0 a
- normal section, and not a bss section so that the linker doesn't crater
- when trying to make more than 2 sections. */
-#define ELF_TC_SPECIAL_SECTIONS \
- { ".tags", SHT_ORDERED, SHF_ALLOC }, \
- { ".sdata", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, \
- { ".sbss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, \
- { ".sdata2", SHT_PROGBITS, SHF_ALLOC }, \
- { ".sbss2", SHT_PROGBITS, SHF_ALLOC }, \
- { ".PPC.EMB.sdata0", SHT_PROGBITS, SHF_ALLOC }, \
- { ".PPC.EMB.sbss0", SHT_PROGBITS, SHF_ALLOC },
+#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;
-/* Keep relocations relative to the GOT, or non-PC relative. */
-#define tc_fix_adjustable(FIX) \
- ((FIX)->fx_r_type != BFD_RELOC_16_GOTOFF \
- && (FIX)->fx_r_type != BFD_RELOC_LO16_GOTOFF \
- && (FIX)->fx_r_type != BFD_RELOC_HI16_GOTOFF \
- && (FIX)->fx_r_type != BFD_RELOC_HI16_S_GOTOFF \
- && (FIX)->fx_r_type != BFD_RELOC_GPREL16 \
- && ! S_IS_EXTERNAL ((FIX)->fx_addsy) \
- && ! S_IS_WEAK ((FIX)->fx_addsy) \
- && ((FIX)->fx_pcrel \
- || ((FIX)->fx_subsy != NULL \
- && (S_GET_SEGMENT ((FIX)->fx_subsy) \
- == S_GET_SEGMENT ((FIX)->fx_addsy)))))
-
-/* We must never ever try to resolve references to externally visible
- symbols in the assembler, because the .o file might go into a shared
- library, and some other shared library might override that symbol. */
-#define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \
- ((FIX)->fx_addsy == NULL \
- || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \
- && ! S_IS_WEAK ((FIX)->fx_addsy) \
- && S_IS_DEFINED ((FIX)->fx_addsy) \
- && ! S_IS_COMMON ((FIX)->fx_addsy)))
+#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 */
-/* call md_apply_fix3 with segment instead of md_apply_fix */
-#define MD_APPLY_FIX3
+#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(FIXP, SEC) md_pcrel_from_section(FIXP, SEC)
-extern long md_pcrel_from_section PARAMS ((struct fix *, segT));
+#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_parse_name(name, exp) ppc_parse_name (name, exp)
-extern int ppc_parse_name PARAMS ((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
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