binutils-gdb/gas/sb.c

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/* sb.c - string buffer manipulation routines
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Copyright 1994, 1995, 2000, 2003 Free Software Foundation, Inc.
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Written by Steve and Judy Chamberlain of Cygnus Support,
sac@cygnus.com
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)
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, 51 Franklin Street - Fifth Floor, Boston, MA
02110-1301, USA. */
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#include "config.h"
#include <stdio.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
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#ifdef HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif
#include "libiberty.h"
#include "sb.h"
include/elf: * arm.h: Import complete list of official relocation names and numbers from AAELF. Define FAKE_RELOCs for old names. Remove a few old names no longer used anywhere. bfd: * elf32-arm.c: Wherever possible, use official reloc names from AAELF. (elf32_arm_howto_table, elf32_arm_tls_gd32_howto) (elf32_arm_tls_ldo32_howto, elf32_arm_tls_ldm32_howto) (elf32_arm_tls_le32_howto, elf32_arm_tls_ie32_howto) (elf32_arm_vtinherit_howto, elf32_arm_vtentry_howto) (elf32_arm_pc11_howto, elf32_arm_thm_pc9_howto, elf32_arm_got_prel) (elf32_arm_r_howto): Replace with elf32_arm_howto_table_1, elf32_arm_howto_table_2, and elf32_arm_howto_table_3. Add many new relocations from AAELF. (elf32_arm_howto_from_type): Update to match. (elf32_arm_reloc_map): Add entries for R_ARM_THM_JUMP24, R_ARM_THM_JUMP11, R_ARM_THM_JUMP19, R_ARM_THM_JUMP8, R_ARM_THM_JUMP6, R_ARM_GNU_VTINHERIT, and R_ARM_GNU_VTENTRY. (elf32_arm_reloc_type_lookup): Use elf32_arm_howto_from_type. (elf32_arm_final_link_relocate): Add support for R_ARM_THM_JUMP24, R_ARM_THM_JUMP19, R_ARM_THM_JUMP6. Remove case entries redundant with default. * reloc.c: Reorganize ARM relocations. Add Thumb assembler-internal relocations BFD_RELOC_ARM_T32_OFFSET_U8, BFD_RELOC_ARM_T32_OFFSET_IMM, BFD_RELOC_ARM_T32_IMMEDIATE. Add visible relocations BFD_RELOC_THUMB_PCREL_BRANCH7, BFD_RELOC_THUMB_BRANCH20, BFD_RELOC_THUMB_BRANCH25. Delete unused relocations BFD_RELOC_ARM_GOT12, BFD_RELOC_ARM_COPY. * bfd-in2.h, libbfd.h: Regenerate. opcodes: * arm-dis.c (thumb_opcodes): Add disassembly for V6T2 16-bit instructions. Adjust disassembly of some opcodes to match unified syntax. (thumb32_opcodes): New table. (print_insn_thumb): Rename print_insn_thumb16; don't handle two-halfword branches here. (print_insn_thumb32): New function. (print_insn): Choose among print_insn_arm, print_insn_thumb16, and print_insn_thumb32. Be consistent about order of halfwords when printing 32-bit instructions. gas: * hash.c (hash_lookup): Add len parameter. All callers changed. (hash_find_n): New interface. * hash.h: Prototype hash_find_n. * sb.c: Include as.h. (scrub_from_sb, sb_to_scrub, scrub_position): New statics. (sb_scrub_and_add_sb): New interface. * sb.h: Prototype sb_scrub_and_add_sb. * input-scrub.c (input_scrub_include_sb): Use sb_scrub_and_add_sb. * config/tc-arm.h (TC_FORCE_RELOCATION_LOCAL): Remove reference to BFD_RELOC_ARM_GOT12 which is never generated. * config/tc-arm.c: Rewrite, adding Thumb-2 support. gas/testsuite: * gas/arm/arm.exp: Convert all existing "gas_test" tests to "run_dump_test" tests. Run more tests unconditionally. Run new tests. * gas/arm/arch4t.s, gas/arm/arch6zk.s, gas/arm/arm3.s, gas/arm/arm6.s * gas/arm/arm7dm.s, gas/arm/bignum1.s, gas/arm/float.s * gas/arm/immed.s, gas/arm/iwmmxt.s, gas/arm/offset.s, gas/arm/thumb.s: Adjust to work as a dump test. * gas/arm/arch4t.d, gas/arm/arch6zk.d, gas/arm/arm3.d, gas/arm/arm6.d * gas/arm/arm7dm.d, gas/arm/bignum1.d, gas/arm/float.d * gas/arm/immed.d, gas/arm/iwmmxt.d, gas/arm/offset.d, gas/arm/thumb.d: New files. * gas/arm/armv1-bad.l, gas/arm/armv1-bad.s: Remove tests for diagnostics that don't happen in the first pass anymore. * gas/arm/iwmmxt-bad.l, gas/arm/r15-bad.l, gas/arm/req.l * gas/arm/vfp-bad.l: Update expected diagnostics. * gas/arm/pic.d: Update expected reloc name. * gas/arm/thumbv6.d: CPY no longer appears in disassembly. * gas/arm/r15-bad.s: Avoid two-argument mul. * gas/arm/req.s: Adjust comments. * gas/arm/maverick.d, gas/arm/maverick.s: Avoid inappropriate use of PC. * gas/arm/macro-1.d, gas/arm/macro1.s * gas/arm/t16-bad.l, gas/arm/t16-bad.s * gas/arm/tcompat.d, gas/arm/tcompat.s * gas/arm/tcompat2.d, gas/arm/tcompat2.s * gas/arm/thumb32.d, gas/arm/thumb32.s New test pair. ld/testsuite: * ld-arm/mixed-app.d: Adjust expected disassembly a little.
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#include "as.h"
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/* These routines are about manipulating strings.
They are managed in things called `sb's which is an abbreviation
for string buffers. An sb has to be created, things can be glued
on to it, and at the end of it's life it should be freed. The
contents should never be pointed at whilst it is still growing,
since it could be moved at any time
eg:
sb_new (&foo);
sb_grow... (&foo,...);
use foo->ptr[*];
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sb_kill (&foo); */
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* Makefile.am (GAS_CFILES): Remove bignum-copy.c. (GENERIC_OBJS): Likewise, remove bignum-copy.o. (bignum-copy.o): Remove. * Makefile.in: Regenerate. * makefile.vms (OBJS): Remove bignum-copy.obj. * symbols.h (local_symbol_make): Remove declaration. (verify_symbol_chain_2): Likewise. * symbols.c (local_symbol_make): Make static. (max_indent_level): Likewise. (verify_symbol_chain_2): Remove. * macro.c (macro_hash): Make static. * messages.c (fprint_value): Remove. * read.h (get_absolute_expr): Remove. (emit_leb128_expr): Likewise. (do_s_func): Likewise. * read.c (do_s_func): Make static. (emit_leb128_expr): Likewise. (get_absolute_expr): Likewise. * as.h (as_howmuch): Remove declaration. (fprint_value): Likewise. * as.c (myname): Make static. * input-scrub.c (as_howmuch): Remove. (as_1_char): Likewise. * input-file.h (input_file_is_open): Remove. * input-file.c (input_file_is_open): Likewise. * expr.h (expr_build_unary): Remove declaration. (expr_build_binary): Likewise. * expr.c (expr_build_unary): Remove. (expr_build_binary): Likewise. * hash.h (hash_replace): Remove declaration. (hash_delete): Likewise. * hash.c (hash_replace): Remove. (hash_delete): Likewise. * bignum-copy.c (bignum_copy): Move from here .. * config/tc-vax.c (bignum_copy): .. to here. * bignum.h (LOG_TO_BASE_2_OF_10): Remove. (bignum_copy): Remove extern declaration. * sb.h (string_count): Remove extern declaration. (sb_build, sb_add_buffer, sb_print, sb_print_at): Likewise. (sb_name): Likewise. * sb.c (dsize): Replace preprocessor macro with static int. (string_count): Make static. (sb_build, sb_add_buffer, sb_print, sb_print_at): Likewise. (sb_name): Likewise. * config/obj-coff.c (dim_index): Make static. * config/tc-i386.c (GOT_symbol): Likewise. (output_invalid_buf): Likewise. * doc/internals.texi (Warning and error messages): Remove the prototype for fprint_value.
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static int dsize = 5;
static void sb_check (sb *, int);
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/* Statistics of sb structures. */
* Makefile.am (GAS_CFILES): Remove bignum-copy.c. (GENERIC_OBJS): Likewise, remove bignum-copy.o. (bignum-copy.o): Remove. * Makefile.in: Regenerate. * makefile.vms (OBJS): Remove bignum-copy.obj. * symbols.h (local_symbol_make): Remove declaration. (verify_symbol_chain_2): Likewise. * symbols.c (local_symbol_make): Make static. (max_indent_level): Likewise. (verify_symbol_chain_2): Remove. * macro.c (macro_hash): Make static. * messages.c (fprint_value): Remove. * read.h (get_absolute_expr): Remove. (emit_leb128_expr): Likewise. (do_s_func): Likewise. * read.c (do_s_func): Make static. (emit_leb128_expr): Likewise. (get_absolute_expr): Likewise. * as.h (as_howmuch): Remove declaration. (fprint_value): Likewise. * as.c (myname): Make static. * input-scrub.c (as_howmuch): Remove. (as_1_char): Likewise. * input-file.h (input_file_is_open): Remove. * input-file.c (input_file_is_open): Likewise. * expr.h (expr_build_unary): Remove declaration. (expr_build_binary): Likewise. * expr.c (expr_build_unary): Remove. (expr_build_binary): Likewise. * hash.h (hash_replace): Remove declaration. (hash_delete): Likewise. * hash.c (hash_replace): Remove. (hash_delete): Likewise. * bignum-copy.c (bignum_copy): Move from here .. * config/tc-vax.c (bignum_copy): .. to here. * bignum.h (LOG_TO_BASE_2_OF_10): Remove. (bignum_copy): Remove extern declaration. * sb.h (string_count): Remove extern declaration. (sb_build, sb_add_buffer, sb_print, sb_print_at): Likewise. (sb_name): Likewise. * sb.c (dsize): Replace preprocessor macro with static int. (string_count): Make static. (sb_build, sb_add_buffer, sb_print, sb_print_at): Likewise. (sb_name): Likewise. * config/obj-coff.c (dim_index): Make static. * config/tc-i386.c (GOT_symbol): Likewise. (output_invalid_buf): Likewise. * doc/internals.texi (Warning and error messages): Remove the prototype for fprint_value.
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static int string_count[sb_max_power_two];
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/* Free list of sb structures. */
static sb_list_vector free_list;
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/* Initializes an sb. */
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* Makefile.am (GAS_CFILES): Remove bignum-copy.c. (GENERIC_OBJS): Likewise, remove bignum-copy.o. (bignum-copy.o): Remove. * Makefile.in: Regenerate. * makefile.vms (OBJS): Remove bignum-copy.obj. * symbols.h (local_symbol_make): Remove declaration. (verify_symbol_chain_2): Likewise. * symbols.c (local_symbol_make): Make static. (max_indent_level): Likewise. (verify_symbol_chain_2): Remove. * macro.c (macro_hash): Make static. * messages.c (fprint_value): Remove. * read.h (get_absolute_expr): Remove. (emit_leb128_expr): Likewise. (do_s_func): Likewise. * read.c (do_s_func): Make static. (emit_leb128_expr): Likewise. (get_absolute_expr): Likewise. * as.h (as_howmuch): Remove declaration. (fprint_value): Likewise. * as.c (myname): Make static. * input-scrub.c (as_howmuch): Remove. (as_1_char): Likewise. * input-file.h (input_file_is_open): Remove. * input-file.c (input_file_is_open): Likewise. * expr.h (expr_build_unary): Remove declaration. (expr_build_binary): Likewise. * expr.c (expr_build_unary): Remove. (expr_build_binary): Likewise. * hash.h (hash_replace): Remove declaration. (hash_delete): Likewise. * hash.c (hash_replace): Remove. (hash_delete): Likewise. * bignum-copy.c (bignum_copy): Move from here .. * config/tc-vax.c (bignum_copy): .. to here. * bignum.h (LOG_TO_BASE_2_OF_10): Remove. (bignum_copy): Remove extern declaration. * sb.h (string_count): Remove extern declaration. (sb_build, sb_add_buffer, sb_print, sb_print_at): Likewise. (sb_name): Likewise. * sb.c (dsize): Replace preprocessor macro with static int. (string_count): Make static. (sb_build, sb_add_buffer, sb_print, sb_print_at): Likewise. (sb_name): Likewise. * config/obj-coff.c (dim_index): Make static. * config/tc-i386.c (GOT_symbol): Likewise. (output_invalid_buf): Likewise. * doc/internals.texi (Warning and error messages): Remove the prototype for fprint_value.
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static void
sb_build (sb *ptr, int size)
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{
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/* See if we can find one to allocate. */
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sb_element *e;
if (size > sb_max_power_two)
abort ();
e = free_list.size[size];
if (!e)
{
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/* Nothing there, allocate one and stick into the free list. */
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e = (sb_element *) xmalloc (sizeof (sb_element) + (1 << size));
e->next = free_list.size[size];
e->size = 1 << size;
free_list.size[size] = e;
string_count[size]++;
}
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/* Remove from free list. */
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free_list.size[size] = e->next;
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/* Copy into callers world. */
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ptr->ptr = e->data;
ptr->pot = size;
ptr->len = 0;
ptr->item = e;
}
void
sb_new (sb *ptr)
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{
sb_build (ptr, dsize);
}
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/* Deallocate the sb at ptr. */
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void
sb_kill (sb *ptr)
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{
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/* Return item to free list. */
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ptr->item->next = free_list.size[ptr->pot];
free_list.size[ptr->pot] = ptr->item;
}
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/* Add the sb at s to the end of the sb at ptr. */
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void
sb_add_sb (sb *ptr, sb *s)
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{
sb_check (ptr, s->len);
memcpy (ptr->ptr + ptr->len, s->ptr, s->len);
ptr->len += s->len;
}
include/elf: * arm.h: Import complete list of official relocation names and numbers from AAELF. Define FAKE_RELOCs for old names. Remove a few old names no longer used anywhere. bfd: * elf32-arm.c: Wherever possible, use official reloc names from AAELF. (elf32_arm_howto_table, elf32_arm_tls_gd32_howto) (elf32_arm_tls_ldo32_howto, elf32_arm_tls_ldm32_howto) (elf32_arm_tls_le32_howto, elf32_arm_tls_ie32_howto) (elf32_arm_vtinherit_howto, elf32_arm_vtentry_howto) (elf32_arm_pc11_howto, elf32_arm_thm_pc9_howto, elf32_arm_got_prel) (elf32_arm_r_howto): Replace with elf32_arm_howto_table_1, elf32_arm_howto_table_2, and elf32_arm_howto_table_3. Add many new relocations from AAELF. (elf32_arm_howto_from_type): Update to match. (elf32_arm_reloc_map): Add entries for R_ARM_THM_JUMP24, R_ARM_THM_JUMP11, R_ARM_THM_JUMP19, R_ARM_THM_JUMP8, R_ARM_THM_JUMP6, R_ARM_GNU_VTINHERIT, and R_ARM_GNU_VTENTRY. (elf32_arm_reloc_type_lookup): Use elf32_arm_howto_from_type. (elf32_arm_final_link_relocate): Add support for R_ARM_THM_JUMP24, R_ARM_THM_JUMP19, R_ARM_THM_JUMP6. Remove case entries redundant with default. * reloc.c: Reorganize ARM relocations. Add Thumb assembler-internal relocations BFD_RELOC_ARM_T32_OFFSET_U8, BFD_RELOC_ARM_T32_OFFSET_IMM, BFD_RELOC_ARM_T32_IMMEDIATE. Add visible relocations BFD_RELOC_THUMB_PCREL_BRANCH7, BFD_RELOC_THUMB_BRANCH20, BFD_RELOC_THUMB_BRANCH25. Delete unused relocations BFD_RELOC_ARM_GOT12, BFD_RELOC_ARM_COPY. * bfd-in2.h, libbfd.h: Regenerate. opcodes: * arm-dis.c (thumb_opcodes): Add disassembly for V6T2 16-bit instructions. Adjust disassembly of some opcodes to match unified syntax. (thumb32_opcodes): New table. (print_insn_thumb): Rename print_insn_thumb16; don't handle two-halfword branches here. (print_insn_thumb32): New function. (print_insn): Choose among print_insn_arm, print_insn_thumb16, and print_insn_thumb32. Be consistent about order of halfwords when printing 32-bit instructions. gas: * hash.c (hash_lookup): Add len parameter. All callers changed. (hash_find_n): New interface. * hash.h: Prototype hash_find_n. * sb.c: Include as.h. (scrub_from_sb, sb_to_scrub, scrub_position): New statics. (sb_scrub_and_add_sb): New interface. * sb.h: Prototype sb_scrub_and_add_sb. * input-scrub.c (input_scrub_include_sb): Use sb_scrub_and_add_sb. * config/tc-arm.h (TC_FORCE_RELOCATION_LOCAL): Remove reference to BFD_RELOC_ARM_GOT12 which is never generated. * config/tc-arm.c: Rewrite, adding Thumb-2 support. gas/testsuite: * gas/arm/arm.exp: Convert all existing "gas_test" tests to "run_dump_test" tests. Run more tests unconditionally. Run new tests. * gas/arm/arch4t.s, gas/arm/arch6zk.s, gas/arm/arm3.s, gas/arm/arm6.s * gas/arm/arm7dm.s, gas/arm/bignum1.s, gas/arm/float.s * gas/arm/immed.s, gas/arm/iwmmxt.s, gas/arm/offset.s, gas/arm/thumb.s: Adjust to work as a dump test. * gas/arm/arch4t.d, gas/arm/arch6zk.d, gas/arm/arm3.d, gas/arm/arm6.d * gas/arm/arm7dm.d, gas/arm/bignum1.d, gas/arm/float.d * gas/arm/immed.d, gas/arm/iwmmxt.d, gas/arm/offset.d, gas/arm/thumb.d: New files. * gas/arm/armv1-bad.l, gas/arm/armv1-bad.s: Remove tests for diagnostics that don't happen in the first pass anymore. * gas/arm/iwmmxt-bad.l, gas/arm/r15-bad.l, gas/arm/req.l * gas/arm/vfp-bad.l: Update expected diagnostics. * gas/arm/pic.d: Update expected reloc name. * gas/arm/thumbv6.d: CPY no longer appears in disassembly. * gas/arm/r15-bad.s: Avoid two-argument mul. * gas/arm/req.s: Adjust comments. * gas/arm/maverick.d, gas/arm/maverick.s: Avoid inappropriate use of PC. * gas/arm/macro-1.d, gas/arm/macro1.s * gas/arm/t16-bad.l, gas/arm/t16-bad.s * gas/arm/tcompat.d, gas/arm/tcompat.s * gas/arm/tcompat2.d, gas/arm/tcompat2.s * gas/arm/thumb32.d, gas/arm/thumb32.s New test pair. ld/testsuite: * ld-arm/mixed-app.d: Adjust expected disassembly a little.
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/* Helper for sb_scrub_and_add_sb. */
static sb *sb_to_scrub;
static char *scrub_position;
static int
scrub_from_sb (char *buf, int buflen)
{
int copy;
copy = sb_to_scrub->len - (scrub_position - sb_to_scrub->ptr);
if (copy > buflen)
copy = buflen;
memcpy (buf, scrub_position, copy);
scrub_position += copy;
return copy;
}
/* Run the sb at s through do_scrub_chars and add the result to the sb
at ptr. */
void
sb_scrub_and_add_sb (sb *ptr, sb *s)
{
sb_to_scrub = s;
scrub_position = s->ptr;
sb_check (ptr, s->len);
ptr->len += do_scrub_chars (scrub_from_sb, ptr->ptr + ptr->len, s->len);
sb_to_scrub = 0;
scrub_position = 0;
}
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/* Make sure that the sb at ptr has room for another len characters,
and grow it if it doesn't. */
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static void
sb_check (sb *ptr, int len)
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{
if (ptr->len + len >= 1 << ptr->pot)
{
sb tmp;
int pot = ptr->pot;
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while (ptr->len + len >= 1 << pot)
pot++;
sb_build (&tmp, pot);
sb_add_sb (&tmp, ptr);
sb_kill (ptr);
*ptr = tmp;
}
}
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/* Make the sb at ptr point back to the beginning. */
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void
sb_reset (sb *ptr)
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{
ptr->len = 0;
}
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/* Add character c to the end of the sb at ptr. */
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void
sb_add_char (sb *ptr, int c)
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{
sb_check (ptr, 1);
ptr->ptr[ptr->len++] = c;
}
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/* Add null terminated string s to the end of sb at ptr. */
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void
sb_add_string (sb *ptr, const char *s)
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{
int len = strlen (s);
sb_check (ptr, len);
memcpy (ptr->ptr + ptr->len, s, len);
ptr->len += len;
}
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/* Add string at s of length len to sb at ptr */
void
sb_add_buffer (sb *ptr, const char *s, int len)
{
sb_check (ptr, len);
memcpy (ptr->ptr + ptr->len, s, len);
ptr->len += len;
}
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/* Like sb_name, but don't include the null byte in the string. */
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char *
sb_terminate (sb *in)
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{
sb_add_char (in, 0);
--in->len;
return in->ptr;
}
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/* Start at the index idx into the string in sb at ptr and skip
whitespace. return the index of the first non whitespace character. */
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int
sb_skip_white (int idx, sb *ptr)
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{
while (idx < ptr->len
&& (ptr->ptr[idx] == ' '
|| ptr->ptr[idx] == '\t'))
idx++;
return idx;
}
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/* Start at the index idx into the sb at ptr. skips whitespace,
a comma and any following whitespace. returns the index of the
next character. */
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int
sb_skip_comma (int idx, sb *ptr)
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{
while (idx < ptr->len
&& (ptr->ptr[idx] == ' '
|| ptr->ptr[idx] == '\t'))
idx++;
if (idx < ptr->len
&& ptr->ptr[idx] == ',')
idx++;
while (idx < ptr->len
&& (ptr->ptr[idx] == ' '
|| ptr->ptr[idx] == '\t'))
idx++;
return idx;
}