* Removed sy_forward and replaced it with an undefined expression

	as the value of a symbol.
	* struc-symbol.h (struct symbol): Removed sy_forward field.  Added
	sy_resolved and sy_resolving single bit fields.
	* symbols.c (symbol_new): Don't initialize sy_forward field.
	(resolve_symbol_value): New function to adjust symbol value by
	fragment address, using recursion to resolve forward symbols.
	* symbols.h: Added prototype for new function.
	* read.c (pseudo_set): Set symbolP->sy_value to an undefined
	expression rather than setting symbolP->sy_forward.
	* write.c (write_object_file): Use resolve_symbol_value on
	symbols, keeping the common case (the old behaviour) inline.
	* config/obj-aout.c (obj_aout_frob_symbol): Removed sy_forward
	handling (subsumed by write.c change).
	* config/obj-coff.c, config/obj-coffbfd.c (obj_coff_val): Set
	sy_value rather than sy_forward.
	* config/obj-coffbfd.c (obj_coff_endef, yank_symbols): Check
	expression segment rather than sy_forward.
	(yank_symbols): Use resolve_symbol_value.
	(crawl_symbols): Removed extra pass over symbols.
	* config/obj-aout.c, config/obj-bout.c, config/obj-coff.c,
	config/obj-vms.c (obj_crawl_symbol_chain): Removed extra pass over
	symbols which handled sy_forward; use resolve_symbol_value
	instead.
	* config/obj-coff.h, config/obj-coffbfd.h (obj_frob_forward_symbol):
	Define.
	* config/obj-elf.c (obj_elf_stab_generic): Check expression
	segment rather than sy_forward.
	* config/obj-vms.c (VMS_Check_For_Main): Don't initialize
	sy_forward; do initialize sy_resolved and sy_resolving.
	* config/tc-hppa.h (STAB_FIXUP): Use sy_value, not sy_forward.

1 files changed, 519 insertions, 0 deletions

diff --git a/gas/config/tc-hppa.h b/gas/config/tc-hppa.h
new file mode 100644
index 0000000..308863f
--- /dev/null
+++ b/gas/config/tc-hppa.h
@@ -0,0 +1,519 @@
+/* tc-hppa.h -- Header file for the PA */
+
+/* Copyright (C) 1989 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
+
+#define TARGET_ARCH bfd_arch_hppa
+#define TARGET_FORMAT "elf32-hppa"
+
+#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 ();
+
+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 ();
+
+
+/* pa-ctrl-func.h -- Control Structures and Functions for the PA */
+
+extern unsigned int assemble_3 ( /* unsigned int x; */ );
+
+extern void dis_assemble_3 ( /* unsigned int x, *r; */ );
+
+extern unsigned int assemble_12 ( /* unsigned int x,y; */ );
+
+extern void dis_assemble_12 ( /* unsigned int as12, *x,*y */ );
+
+extern unsigned long assemble_17 ( /* unsigned int x,y,z */ );
+
+extern void dis_assemble_17 ( /* unsigned int as17, *x,*y,*z */ );
+
+extern unsigned long assemble_21 ( /* unsigned int x; */ );
+
+extern void dis_assemble_21 ( /* unsigned int as21,*x; */ );
+
+extern void sign_unext ( /* unsigned int x,len; unsigned int *result */ );
+
+extern void low_sign_unext ( /* unsigned int x,len; unsigned int *result */ );
+
+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 */
+    symbolS *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_seg == undefined_section) \
+		  {						\
+		     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 */	\
+				  (asymbol *)NULL,		\
+				  0,				\
+				  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 */	\
+				   (asymbol *)NULL,		\
+				   0,				\
+				   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 symbolS *pa_get_start_symbol ();
+
+extern symbolS *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, 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;
+    char sort;
+#ifdef OBJ_SOM
+    segT segment;
+#else
+    asection *segment;
+    char *alias;		/* an alias for this section (or NULL if there isn't one) */
+#endif
+  };
+
+extern struct default_space_dict pa_def_spaces[];
+
+/*
+	Support for keeping track of the most recent label in each
+	space.
+ */
+
+typedef struct label_symbol_struct
+  {
+    symbolS *lss_label;		/* the label symbol		*/
+    space_dict_chainS *lss_space;	/* the space to which it applies*/
+    struct label_symbol_struct *lss_next;	/* the next label symbol	*/
+  } label_symbolS;
+
+extern label_symbolS *label_symbols_rootP;
+
+label_symbolS *pa_get_label ();
+int pa_label_is_defined ();
+void pa_define_label ();
+void pa_undefine_label ();
+int pa_pseudo_op_moves_pc ();
+
+/* end of label symbol support. */
+
+#define is_DP_relative(exp)  ( (exp).X_subtract_symbol		\
+                              && strcmp((exp).X_subtract_symbol->bsym->name,	\
+                                        "$global$") == 0 )
+
+#define is_PC_relative(exp)  ( (exp).X_subtract_symbol		\
+                              && strcmp((exp).X_subtract_symbol->bsym->name,	\
+                                        "$PIC_pcrel$0") == 0 )
+
+#define is_complex(exp) ((exp).X_seg && (exp).X_seg == diff_section)
+
+#define tc_crawl_symbol_chain(headers) {;}	/* Not used. */
+
+#define tc_headers_hook(headers) {;}	/* Not used. */
+
+#define elf_tc_symbol		elf_hppa_tc_symbol
+#define elf_tc_make_sections	elf_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
+
+extern void parse_cons_expression_hppa PARAMS ((expressionS *exp));
+extern void cons_fix_new_hppa PARAMS ((fragS *frag,
+				       int where,
+				       int size,
+				       expressionS *exp));
+
+#endif /* _TC_HPPA_H */