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Apply Bruno de Bus's patch to record the ARM mapping symbol state on a per-

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section basis and to switch to the MAP_DATA state when emitting literal pools.
This commit is contained in:
Nick Clifton
2004-04-22 09:49:03 +00:00
parent 26e75e5c23
commit 69b975477d
3 changed files with 111 additions and 112 deletions
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19
gas/ChangeLog
View File

@@ -1,3 +1,22 @@
2004-04-22 Bruno De Bus <bdebus@elis.ugent.be>
* config/tc-arm.h (enum mstate): Move here, add MAP_UNDEFINED
state.
(TC_SEGMENT_INFO_TYPE): Define to enum mstate.
* config/tc-arm.c (enum mstate): Delete from here.
(mapping_state): Remove the static mapstate variable and instead
store the state in the segment. This allows a per-section mapping
state. Handle and ignore MAP_UNDEFINED states.
(arm_elf_change_section): Get the current mapping state from the
new section.
(s_ltorg): Set the mapping state to MAP_DATA.
(arm_cleanup): Use arm_elf_change_section to get the mapping state
for each pool as it is emitted.
2004-04-22 Nick Clifton <nickc@redhat.com>
* config/tc-arm.h: Formatting tidy ups.
2004-04-20 Chris Demetriou <cgd@broadcom.com>
* NEWS: Note that MIPS -membedded-pic option is deprecated.

32
gas/config/tc-arm.c
View File

@@ -1,5 +1,5 @@
/* tc-arm.c -- Assemble for the ARM
Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
Free Software Foundation, Inc.
Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
Modified by David Taylor (dtaylor@armltd.co.uk)
@@ -2829,13 +2829,6 @@ validate_offset_imm (val, hwse)
#ifdef OBJ_ELF
enum mstate
{
MAP_DATA,
MAP_ARM,
MAP_THUMB
};
/* This code is to handle mapping symbols as defined in the ARM ELF spec.
(This text is taken from version B-02 of the spec):
@@ -2910,10 +2903,11 @@ enum mstate
the EABI (which is still under development), so they are not
implemented here. */
static enum mstate mapstate = MAP_UNDEFINED;
static void
mapping_state (enum mstate state)
{
static enum mstate mapstate = MAP_DATA;
symbolS * symbolP;
const char * symname;
int type;
@@ -2939,10 +2933,14 @@ mapping_state (enum mstate state)
symname = "$t";
type = BSF_FUNCTION;
break;
case MAP_UNDEFINED:
return;
default:
abort ();
}
seg_info (now_seg)->tc_segment_info_data = state;
symbolP = symbol_new (symname, now_seg, (valueT) frag_now_fix (), frag_now);
symbol_table_insert (symbolP);
symbol_get_bfdsym (symbolP)->flags |= type | BSF_LOCAL;
@@ -2983,16 +2981,7 @@ arm_elf_change_section (void)
if ((flags & SEC_ALLOC) == 0)
return;
if (flags & SEC_CODE)
{
if (thumb_mode)
mapping_state (MAP_THUMB);
else
mapping_state (MAP_ARM);
}
else
/* This section does not contain code. Therefore it must contain data. */
mapping_state (MAP_DATA);
mapstate = seg_info (now_seg)->tc_segment_info_data;
}
#else
#define mapping_state(a)
@@ -3115,6 +3104,8 @@ s_ltorg (ignored)
|| pool->next_free_entry == 0)
return;
mapping_state (MAP_DATA);
/* Align pool as you have word accesses.
Only make a frag if we have to. */
if (!need_pass_2)
@@ -13878,6 +13869,9 @@ arm_cleanup ()
{
/* Put it at the end of the relevent section. */
subseg_set (pool->section, pool->sub_section);
#ifdef OBJ_ELF
arm_elf_change_section ();
#endif
s_ltorg (0);
}
}

172
gas/config/tc-arm.h
View File

@@ -1,5 +1,5 @@
/* This file is tc-arm.h
Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2004
Free Software Foundation, Inc.
Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org)
Modified by David Taylor (dtaylor@armltd.co.uk)
@@ -47,67 +47,47 @@
#define LITTLE_ENDIAN 1234
#define BIG_ENDIAN 4321
#if defined OBJ_AOUT
#if defined TE_RISCIX
# define TARGET_FORMAT "a.out-riscix"
#elif defined TE_LINUX
# define ARM_BI_ENDIAN
# define TARGET_FORMAT "a.out-arm-linux"
#elif defined TE_NetBSD
# define TARGET_FORMAT "a.out-arm-netbsd"
#else
# define ARM_BI_ENDIAN
# define TARGET_FORMAT \
(target_big_endian ? "a.out-arm-big" : "a.out-arm-little")
#endif
#endif /* OBJ_AOUT */
#ifdef OBJ_AIF
#define TARGET_FORMAT "aif"
#endif
struct fix;
#if defined OBJ_COFF || defined OBJ_ELF
#if defined OBJ_AOUT
# if defined TE_RISCIX
# define TARGET_FORMAT "a.out-riscix"
# elif defined TE_LINUX
# define ARM_BI_ENDIAN
# define TARGET_FORMAT "a.out-arm-linux"
# elif defined TE_NetBSD
# define TARGET_FORMAT "a.out-arm-netbsd"
# else
# define ARM_BI_ENDIAN
# define TARGET_FORMAT (target_big_endian ? "a.out-arm-big" : "a.out-arm-little")
# endif
#elif defined OBJ_AIF
# define TARGET_FORMAT "aif"
#elif defined OBJ_COFF
# define ARM_BI_ENDIAN
# define TC_VALIDATE_FIX(FIX, SEGTYPE, LABEL) arm_validate_fix (FIX)
extern void arm_validate_fix PARAMS ((struct fix *));
#endif
#ifdef OBJ_COFF
# if defined TE_PE
# ifdef TE_EPOC
# define TARGET_FORMAT (target_big_endian ? "epoc-pe-arm-big" : "epoc-pe-arm-little")
# else
# define TARGET_FORMAT (target_big_endian ? "pe-arm-big" : "pe-arm-little")
# endif
# if defined TE_EPOC
# define TARGET_FORMAT (target_big_endian ? "epoc-pe-arm-big" : "epoc-pe-arm-little")
# else
# define TARGET_FORMAT (target_big_endian ? "pe-arm-big" : "pe-arm-little")
# endif
# else
# define TARGET_FORMAT (target_big_endian ? "coff-arm-big" : "coff-arm-little")
# endif
#endif
#ifdef OBJ_ELF
# define TARGET_FORMAT elf32_arm_target_format()
extern const char * elf32_arm_target_format PARAMS ((void));
# define md_elf_section_change_hook() arm_elf_change_section
extern void arm_elf_change_section (void);
#elif defined OBJ_ELF
# define ARM_BI_ENDIAN
# define TARGET_FORMAT elf32_arm_target_format ()
#endif
#define TC_FORCE_RELOCATION(FIX) arm_force_relocation (FIX)
extern int arm_force_relocation PARAMS ((struct fix *));
#define md_convert_frag(b, s, f) {as_fatal (_("arm convert_frag\n"));}
#define md_convert_frag(b, s, f) { as_fatal (_("arm convert_frag\n")); }
#define md_cleanup() arm_cleanup ()
extern void arm_cleanup PARAMS ((void));
#define md_start_line_hook() arm_start_line_hook ()
extern void arm_start_line_hook PARAMS ((void));
#define tc_frob_label(S) arm_frob_label (S)
extern void arm_frob_label PARAMS ((symbolS *));
/* We also need to mark assembler created symbols: */
#define tc_frob_fake_label(S) arm_frob_label (S)
@@ -119,19 +99,9 @@ extern int arm_force_relocation PARAMS ((struct fix *));
#define TC_FIX_TYPE PTR
#define TC_INIT_FIX_DATA(FIX) ((FIX)->tc_fix_data = NULL)
#if defined OBJ_ELF || defined OBJ_COFF
#define EXTERN_FORCE_RELOC 1
#define tc_fix_adjustable(FIX) arm_fix_adjustable (FIX)
bfd_boolean arm_fix_adjustable PARAMS ((struct fix *));
/* Values passed to md_apply_fix3 don't include the symbol value. */
#define MD_APPLY_SYM_VALUE(FIX) 0
#endif
/* We need to keep some local information on symbols. */
#define TC_SYMFIELD_TYPE unsigned int
#define TC_SYMFIELD_TYPE unsigned int
#define ARM_GET_FLAG(s) (*symbol_get_tc (s))
#define ARM_SET_FLAG(s,v) (*symbol_get_tc (s) |= (v))
#define ARM_RESET_FLAG(s,v) (*symbol_get_tc (s) &= ~(v))
@@ -148,23 +118,10 @@ bfd_boolean arm_fix_adjustable PARAMS ((struct fix *));
#define ARM_SET_INTERWORK(s,t) ((t) ? ARM_SET_FLAG (s, ARM_FLAG_INTERWORK) : ARM_RESET_FLAG (s, ARM_FLAG_INTERWORK))
#define THUMB_SET_FUNC(s,t) ((t) ? ARM_SET_FLAG (s, THUMB_FLAG_FUNC) : ARM_RESET_FLAG (s, THUMB_FLAG_FUNC))
#define TC_START_LABEL(C,STR) \
(c == ':' || (c == '/' && arm_data_in_code ()))
int arm_data_in_code PARAMS ((void));
#define tc_canonicalize_symbol_name(str) \
arm_canonicalize_symbol_name (str);
char * arm_canonicalize_symbol_name PARAMS ((char *));
#define obj_adjust_symtab() arm_adjust_symtab ()
extern void arm_adjust_symtab PARAMS ((void));
#ifdef OBJ_ELF
#define obj_frob_symbol(sym, punt) armelf_frob_symbol ((sym), & (punt))
void armelf_frob_symbol PARAMS ((symbolS *, int *));
#endif
#define tc_aout_pre_write_hook(x) {;} /* not used */
#define TC_START_LABEL(C,STR) (c == ':' || (c == '/' && arm_data_in_code ()))
#define tc_canonicalize_symbol_name(str) arm_canonicalize_symbol_name (str);
#define obj_adjust_symtab() arm_adjust_symtab ()
#define tc_aout_pre_write_hook(x) {;} /* not used */
#define LISTING_HEADER "ARM GAS "
@@ -172,9 +129,6 @@ void armelf_frob_symbol PARAMS ((symbolS *, int *));
#define LOCAL_LABEL(name) (name[0] == '.' && (name[1] == 'L'))
#define LOCAL_LABELS_FB 1
#ifdef OBJ_ELF
#define LOCAL_LABEL_PREFIX '.'
#endif
/* This expression evaluates to true if the relocation is for a local
object for which we still want to do the relocation at runtime.
@@ -192,29 +146,15 @@ void armelf_frob_symbol PARAMS ((symbolS *, int *));
|| TC_FORCE_RELOCATION (FIX))
#define TC_CONS_FIX_NEW cons_fix_new_arm
extern void cons_fix_new_arm PARAMS ((fragS *, int, int, expressionS *));
#ifdef OBJ_ELF
#define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
#else
#define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_"
#endif
#ifdef OBJ_ELF
#define DWARF2_LINE_MIN_INSN_LENGTH 2
#endif
#define MAX_MEM_FOR_RS_ALIGN_CODE 31
/* For frags in code sections we need to record whether they contain
ARM code or THUMB code. This is that if they have to be aligned,
they can contain the correct type of no-op instruction. */
#define TC_FRAG_TYPE int
#define TC_FRAG_TYPE int
#define TC_FRAG_INIT(fragp) arm_init_frag (fragp)
extern void arm_init_frag PARAMS ((struct frag *));
#define HANDLE_ALIGN(fragp) arm_handle_align (fragp)
extern void arm_handle_align PARAMS ((struct frag *));
#define HANDLE_ALIGN(fragp) arm_handle_align (fragp)
#define md_do_align(N, FILL, LEN, MAX, LABEL) \
if (FILL == NULL && (N) != 0 && ! need_pass_2 && subseg_text_p (now_seg)) \
@@ -222,4 +162,50 @@ extern void arm_handle_align PARAMS ((struct frag *));
arm_frag_align_code (N, MAX); \
goto LABEL; \
}
extern void arm_frag_align_code PARAMS ((int, int));
#ifdef OBJ_ELF
# define DWARF2_LINE_MIN_INSN_LENGTH 2
# define obj_frob_symbol(sym, punt) armelf_frob_symbol ((sym), & (punt))
# define md_elf_section_change_hook() arm_elf_change_section ()
# define GLOBAL_OFFSET_TABLE_NAME "_GLOBAL_OFFSET_TABLE_"
# define LOCAL_LABEL_PREFIX '.'
# define TC_SEGMENT_INFO_TYPE enum mstate
enum mstate
{
MAP_UNDEFINED = 0, /* Must be zero, for seginfo in new sections. */
MAP_DATA,
MAP_ARM,
MAP_THUMB
};
#else /* Not OBJ_ELF. */
#define GLOBAL_OFFSET_TABLE_NAME "__GLOBAL_OFFSET_TABLE_"
#endif
#if defined OBJ_ELF || defined OBJ_COFF
# define EXTERN_FORCE_RELOC 1
# define tc_fix_adjustable(FIX) arm_fix_adjustable (FIX)
/* Values passed to md_apply_fix3 don't include the symbol value. */
# define MD_APPLY_SYM_VALUE(FIX) 0
# define TC_VALIDATE_FIX(FIX, SEGTYPE, LABEL) arm_validate_fix (FIX)
#endif
extern void arm_frag_align_code (int, int);
extern void arm_validate_fix (struct fix *);
extern const char * elf32_arm_target_format (void);
extern void arm_elf_change_section (void);
extern int arm_force_relocation (struct fix *);
extern void arm_cleanup (void);
extern void arm_start_line_hook (void);
extern void arm_frob_label (symbolS *);
extern int arm_data_in_code (void);
extern char * arm_canonicalize_symbol_name (char *);
extern void arm_adjust_symtab (void);
extern void armelf_frob_symbol (symbolS *, int *);
extern void cons_fix_new_arm (fragS *, int, int, expressionS *);
extern void arm_init_frag (struct frag *);
extern void arm_handle_align (struct frag *);
extern bfd_boolean arm_fix_adjustable (struct fix *);