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binutils-gdb/gas/config/tc-hppa.h
Ken Raeburn 5cf4cd1b8b more Utah changes, some cleanup of mine
1993-09-03 22:36:26 +00:00

517 lines
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/* tc-hppa.h -- Header file for the PA */
/* Copyright (C) 1989, 1993 Free Software Foundation, Inc.
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 1, 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
/*
HP PA-RISC support was contributed by the Center for Software Science
at the University of Utah.
*/
#ifndef _TC_HPPA_H
#define _TC_HPPA_H
#ifndef TC_HPPA
#define TC_HPPA 1
#endif
#ifdef OBJ_ELF
#include "../bfd/elf32-hppa.h"
#endif
#define TARGET_ARCH bfd_arch_hppa
#define TARGET_FORMAT "elf32-hppa"
/* Local labels have an "L$" prefix. */
#define LOCAL_LABEL(name) ((name)[0] == 'L' && (name)[1] == '$')
#define ASEC_NULL (asection *)0
/* We can do sym1 - sym2 as long as sym2 is $global$ */
#define SEG_DIFF_ALLOWED
typedef enum FPOF
{
SGL, DBL, ILLEGAL_FMT, QUAD
} FP_Operand_Format;
extern char *expr_end;
extern void s_globl (), s_long (), s_short (), s_space (), cons ();
extern void stringer ();
extern unsigned int next_char_of_string ();
extern void pa_big_cons ();
extern void pa_cons ();
extern void pa_data ();
extern void pa_desc ();
extern void pa_float_cons ();
extern void pa_fill ();
extern void pa_lcomm ();
extern void pa_lsym ();
extern void pa_stringer ();
extern void pa_text ();
extern void pa_version ();
int pa_parse_number ();
int pa_parse_fp_cmp_cond ();
FP_Operand_Format pa_parse_fp_format ();
#ifdef __STDC__
int getExpression (char *str);
#else
int getExpression ();
#endif
int getAbsoluteExpression ();
int evaluateAbsolute ();
int pa_build_arg_reloc ();
unsigned int pa_align_arg_reloc ();
void pa_skip ();
int pa_parse_nullif ();
int pa_parse_nonneg_cmpsub_cmpltr ();
int pa_parse_neg_cmpsub_cmpltr ();
int pa_parse_nonneg_add_cmpltr ();
int pa_parse_neg_add_cmpltr ();
int pa_build_arg_reloc ();
void s_seg (), s_proc (), s_data1 ();
void pa_block (), pa_call (), pa_call_args (), pa_callinfo ();
void pa_code (), pa_comm (), pa_copyright (), pa_end ();
void pa_enter ();
void pa_entry (), pa_equ (), pa_exit (), pa_export ();
void pa_export_args (), pa_import (), pa_label (), pa_leave ();
void pa_origin (), pa_proc (), pa_procend (), pa_space ();
void pa_spnum (), pa_subspace (), pa_version ();
void pa_param();
extern const pseudo_typeS md_pseudo_table[];
/*
PA-89 floating point registers are arranged like this:
+--------------+--------------+
| 0 or 16L | 16 or 16R |
+--------------+--------------+
| 1 or 17L | 17 or 17R |
+--------------+--------------+
| | |
. . .
. . .
. . .
| | |
+--------------+--------------+
| 14 or 30L | 30 or 30R |
+--------------+--------------+
| 15 or 31L | 31 or 31R |
+--------------+--------------+
The following is a version of pa_parse_number that
handles the L/R notation and returns the correct
value to put into the instruction register field.
The correct value to put into the instruction is
encoded in the structure 'pa_89_fp_reg_struct'.
*/
struct pa_89_fp_reg_struct
{
char number_part;
char L_R_select;
};
int need_89_opcode ();
int pa_89_parse_number ();
struct call_desc
{
unsigned int arg_reloc;
unsigned int arg_count;
};
typedef struct call_desc call_descS;
extern call_descS last_call_desc;
/* GDB debug support */
#if defined(OBJ_SOME)
#define GDB_DEBUG_SPACE_NAME "$GDB_DEBUG$"
#define GDB_STRINGS_SUBSPACE_NAME "$GDB_STRINGS$"
#define GDB_SYMBOLS_SUBSPACE_NAME "$GDB_SYMBOLS$"
#else
#define GDB_DEBUG_SPACE_NAME ".stab"
#define GDB_STRINGS_SUBSPACE_NAME ".stabstr"
#define GDB_SYMBOLS_SUBSPACE_NAME ".stab"
#endif
/* pre-defined subsegments (subspaces) for the HP 9000 Series 800 */
#define SUBSEG_CODE 0
#define SUBSEG_DATA 0
#define SUBSEG_LIT 1
#define SUBSEG_BSS 2
#define SUBSEG_UNWIND 3
#define SUBSEG_GDB_STRINGS 0
#define SUBSEG_GDB_SYMBOLS 1
#define UNWIND_SECTION_NAME ".hppa_unwind"
/* subspace dictionary chain entry structure */
struct subspace_dictionary_chain
{
#if defined(OBJ_OSFROSE) | defined(OBJ_ELF)
#ifdef OBJ_OSFROSE
region_command_t *ssd_entry;/* XXX: not sure this is what we need here */
#else
Elf_Internal_Shdr *ssd_entry;
unsigned long ssd_vm_addr;
#endif
char *ssd_name; /* used until time of writing object file */
/* then we use ssd_entry->regc_region_name */
unsigned char ssd_quadrant;
unsigned char ssd_sort_key;
unsigned char ssd_common;
unsigned char ssd_dup_common;
unsigned char ssd_loadable;
unsigned char ssd_code_only;
#else
subspace_dictS *ssd_entry; /* this dictionary */
#endif
int ssd_defined; /* this subspace has been used */
int ssd_space_number; /* space # this subspace is in */
asection *ssd_seg; /* this subspace = this seg */
int ssd_subseg; /* and subseg */
int ssd_zero;
int object_file_index; /* index of this entry within
the subspace dictionary of
the object file (not used until
the object file is written */
int ssd_last_align; /* the size of the last alignment
request for this subspace */
struct symbol *ssd_start_sym; /* a symbol whose value is the
start of this subspace */
struct subspace_dictionary_chain *ssd_next; /* next subspace dict. entry */
};
typedef struct subspace_dictionary_chain subspace_dict_chainS;
/* space dictionary chain entry structure */
struct space_dictionary_chain
{
#ifdef OBJ_OSFROSE
region_command_t *sd_entry; /* XXX: not sure this is what we need here */
char *sd_name; /* used until time of writing object file */
/* then we use sd_entry->regc_region_name */
unsigned int sd_loadable;
unsigned int sd_private;
unsigned int sd_spnum;
unsigned char sd_sort_key;
#else
#ifdef OBJ_ELF
Elf_Internal_Shdr *sd_entry;
char *sd_name; /* used until time of writing object file */
/* then we use sd_entry->sh_name */
unsigned int sd_loadable;
unsigned int sd_private;
unsigned int sd_spnum;
unsigned char sd_sort_key;
#else
space_dictS *sd_entry; /* this dictionary */
#endif
#endif
int sd_defined; /* this space has been used */
asection *sd_seg; /* GAS segment to which this space corresponds */
int sd_last_subseg; /* current subsegment number we are using */
subspace_dict_chainS *sd_subspaces; /* all subspaces in this space */
struct space_dictionary_chain *sd_next; /* the next space dict. entry */
};
typedef struct space_dictionary_chain space_dict_chainS;
/*
Macros to maintain spaces and subspaces
*/
#ifdef OBJ_OSFROSE
#define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
#define SPACE_PRIVATE(space_chain) (space_chain)->sd_private
#define SPACE_LOADABLE(space_chain) (space_chain)->sd_loadable
#define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
#define SPACE_SORT(space_chain) (space_chain)->sd_sort_key
#define SPACE_NAME(space_chain) (space_chain)->sd_name
#define SUBSPACE_QUADRANT(ss_chain) (ss_chain)->ssd_quadrant
#define SUBSPACE_ALIGN(ss_chain) (ss_chain)->ssd_entry->regc_addralign
#define SUBSPACE_ACCESS(ss_chain) (ss_chain)->ssd_entry->regc_initprot
#define SUBSPACE_SORT(ss_chain) (ss_chain)->ssd_sort_key
#define SUBSPACE_COMMON(ss_chain) (ss_chain)->ssd_common
#define SUBSPACE_ZERO(ss_chain) (ss_chain)->ssd_zero
#define SUBSPACE_DUP_COMM(ss_chain) (ss_chain)->ssd_dup_common
#define SUBSPACE_CODE_ONLY(ssch) ((ssch)->ssd_entry->regc_flags & REG_TEXT_T)
#define SET_SUBSPACE_CODE_ONLY(ssch,val) (ssch)->ssd_entry->regc_flags |= ((val) ? REG_TEXT_T : 0)
#define SUBSPACE_LOADABLE(ss_chain) (ss_chain)->ssd_loadable
#define SUBSPACE_SUBSPACE_START(ss_chain) (ss_chain)->ssd_entry->regc_addr.vm_addr
#define SUBSPACE_SUBSPACE_LENGTH(ss_chain) (ss_chain)->ssd_entry->regc_vm_size
#define SUBSPACE_REGION_NAME(ss_chain) (ss_chain)->ssd_entry->regc_region_name
#define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
#endif
#ifdef OBJ_ELF
#define RELOC_EXPANSION_POSSIBLE
#define MAX_RELOC_EXPANSION 5
#define SPACE_DEFINED(space_chain) (space_chain)->sd_defined
#define SPACE_PRIVATE(space_chain) (space_chain)->sd_private
#define SPACE_LOADABLE(space_chain) (space_chain)->sd_loadable
#define SPACE_SPNUM(space_chain) (space_chain)->sd_spnum
#define SPACE_SORT(space_chain) (space_chain)->sd_sort_key
#define SPACE_NAME(space_chain) (space_chain)->sd_name
#define SUBSPACE_QUADRANT(ss_chain) (ss_chain)->ssd_quadrant
#define SUBSPACE_ALIGN(ss_chain) (ss_chain)->ssd_entry->sh_addralign
#define SUBSPACE_ACCESS(ss_chain) (ss_chain)->ssd_entry->sh_flags
#define SUBSPACE_SORT(ss_chain) (ss_chain)->ssd_sort_key
#define SUBSPACE_COMMON(ss_chain) (ss_chain)->ssd_common
#define SUBSPACE_ZERO(ss_chain) (ss_chain)->ssd_zero
#define SUBSPACE_DUP_COMM(ss_chain) (ss_chain)->ssd_dup_common
#define SUBSPACE_CODE_ONLY(ssch) \
(((ssch)->ssd_entry->sh_flags & (SHF_ALLOC | SHF_EXECINSTR | SHF_WRITE)) \
== (SHF_ALLOC | SHF_EXECINSTR))
#define SET_SUBSPACE_CODE_ONLY(ssch,val) \
(ssch)->ssd_entry->sh_flags &= ((val) ? ~SHF_WRITE : 0xffffffff)
#define SUBSPACE_LOADABLE(ss_chain) (ss_chain)->ssd_loadable
#define SUBSPACE_SUBSPACE_START(ss_chain) (ss_chain)->ssd_vm_addr
#define SUBSPACE_SUBSPACE_LENGTH(ss_chain) (ss_chain)->ssd_entry->sh_size
#define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_name
#define STAB_FIXUP(frag,toptr,symP,stab_type) \
if ( (stab_type == 's' || stab_type == 'n') \
&& symP->sy_value.X_op == O_symbol) \
{ \
int i = S_GET_TYPE(symP) & N_TYPE; \
fix_new_hppa(frag, \
toptr-frag->fr_literal, /* where */ \
4, /* size */ \
symP->sy_value.X_add_symbol, /* addr of sym for this stab */ \
(offsetT) 0, \
(expressionS *) NULL, \
i == N_UNDF || i == N_ABS, /* 1 if internal reloc */ \
R_HPPA, /* type */ \
e_fsel, /* fixup fld = F% */ \
32, \
0, /* arg_reloc */ \
(char *)0 \
); \
} \
else if ( stab_type == 'd' ) \
{ \
fix_new_hppa (frag, \
toptr-frag->fr_literal, /* where */ \
4, /* size */ \
symP, /* addr of sym for this stab */ \
(offsetT) 0, \
(expressionS *) NULL, \
0, \
R_HPPA, /* type */ \
e_fsel, /* fixup fld = F% */ \
32, \
0, /* arg_reloc */ \
(char *)0 \
); \
}
#endif
#ifdef OBJ_SOM
#define SPACE_DEFINED(space_chain) (space_chain)->sd_entry->is_defined
#define SPACE_PRIVATE(space_chain) (space_chain)->sd_entry->is_private
#define SPACE_LOADABLE(space_chain) (space_chain)->sd_entry->is_loadable
#define SPACE_SPNUM(space_chain) (space_chain)->sd_entry->space_number
#define SPACE_SORT(space_chain) (space_chain)->sd_entry->sort_key
#define SPACE_NAME(space_chain) (space_chain)->sd_entry->name
#define SUBSPACE_QUADRANT(ss_chain) (ss_chain)->ssd_entry->quadrant
#define SUBSPACE_ALIGN(ss_chain) (ss_chain)->ssd_entry->alignment
#define SUBSPACE_ACCESS(ss_chain) (ss_chain)->ssd_entry->access_control_bits
#define SUBSPACE_SORT(ss_chain) (ss_chain)->ssd_entry->sort_key
#define SUBSPACE_COMMON(ss_chain) (ss_chain)->ssd_entry->is_common
#define SUBSPACE_ZERO(ss_chain) (ss_chain)->ssd_zero
#define SUBSPACE_DUP_COMM(ss_chain) (ss_chain)->ssd_entry->dup_common
#define SUBSPACE_CODE_ONLY(ss_chain) (ss_chain)->ssd_entry->code_only
#define SUBSPACE_LOADABLE(ss_chain) (ss_chain)->ssd_entry->is_loadable
#define SUBSPACE_SUBSPACE_START(ss_chain) (ss_chain)->ssd_entry->subspace_start
#define SUBSPACE_SUBSPACE_LENGTH(ss_chain) (ss_chain)->ssd_entry->subspace_length
#define SUBSPACE_NAME(ss_chain) (ss_chain)->ssd_entry->name
#endif
extern space_dict_chainS *space_dict_root;
extern space_dict_chainS *space_dict_last;
extern space_dict_chainS *current_space;
extern subspace_dict_chainS *current_subspace;
extern space_dict_chainS *create_new_space ();
extern subspace_dict_chainS *create_new_subspace ();
extern subspace_dict_chainS *update_subspace ();
extern space_dict_chainS *is_defined_space ();
extern space_dict_chainS *pa_segment_to_space ();
extern subspace_dict_chainS *is_defined_subspace ();
extern subspace_dict_chainS *pa_subsegment_to_subspace ();
extern space_dict_chainS *pa_find_space_by_number ();
extern unsigned int pa_subspace_start ();
extern int is_last_defined_subspace ();
/* symbol support */
extern struct symbol *pa_get_start_symbol ();
extern struct symbol *pa_set_start_symbol ();
/* default space and subspace dictionaries */
struct default_subspace_dict
{
char *name;
char defined;
char loadable, code_only, common, dup_common, zero;
unsigned char sort;
int access, space_index, alignment, quadrant;
#ifdef OBJ_SOM
segT segment;
#else
int def_space_index; /* this is an index in the default spaces array */
char *alias; /* an alias for this section (or NULL if there isn't one) */
#endif
subsegT subsegment;
};
extern struct default_subspace_dict pa_def_subspaces[];
struct default_space_dict
{
char *name;
int spnum;
char loadable;
char defined;
char private;
unsigned char sort;
#ifdef OBJ_SOM
segT segment;
#else
asection *segment;
/* an alias for this section (or NULL if there isn't one) */
char *alias;
#endif
};
extern struct default_space_dict pa_def_spaces[];
/*
Support for keeping track of the most recent label in each
space.
*/
#define tc_frob_label(sym) pa_define_label (sym)
typedef struct label_symbol_struct
{
/* the label symbol */
struct symbol *lss_label;
/* the space to which it applies */
space_dict_chainS *lss_space;
/* the next label symbol */
struct label_symbol_struct *lss_next;
} label_symbolS;
void pa_define_label ();
/* end of label symbol support. */
#define is_DP_relative(exp) \
((exp).X_op == O_subtract \
&& strcmp((exp).X_op_symbol->bsym->name, "$global$") == 0)
#define is_PC_relative(exp) \
((exp).X_op == O_subtract \
&& strcmp((exp).X_op_symbol->bsym->name, "$PIC_pcrel$0") == 0)
#define is_complex(exp) \
((exp).X_op != O_constant && (exp).X_op != O_symbol)
#define tc_crawl_symbol_chain(headers) {;} /* Not used. */
#define tc_headers_hook(headers) {;} /* Not used. */
#define elf_tc_symbol hppa_tc_symbol
#define elf_tc_make_sections hppa_tc_make_sections
extern void elf_hppa_final_processing ();
#define elf_tc_final_processing elf_hppa_final_processing
/* We need to parse field selectors in .byte, etc. */
#define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) \
parse_cons_expression_hppa (EXP)
#define TC_CONS_FIX_NEW cons_fix_new_hppa
/* FIXME these used to be prototypes, but both want an expressionS which
is not defined when this file is included. */
extern void parse_cons_expression_hppa ();
extern void cons_fix_new_hppa ();
/* On the PA, an equal sign often appears as a condition or nullification
completer in an instruction. This can be detected by checking the
previous character, if the character is a comma, then the equal is
being used as part of an instruction. */
#define TC_EQUAL_IN_INSN(C, PTR) ((C) == ',')
/* Similarly for an exclamation point. It is used in FP comparison
instructions and as an end of line marker. When used in an instruction
it will always follow a comma. */
#define TC_EOL_IN_INSN(PTR) (is_end_of_line[*(PTR)] && (PTR)[-1] == ',')
#endif /* _TC_HPPA_H */
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