Alan Modra fe0e921f00 PR26513, 629310abec breaks assembling PowerPC Linux kernels
Inserting with replacement is wrong for some gas hash table uses.
This patch implements an htab_insert that conditionally replaces, and
similarly for str_hash_insert.  str_hash_insert with replace=0 is
roughly equivalent to the older hash_insert, and str_hash_insert with
replace=1 to the older hash_jam, but return values are different.  I
found it useful to know whether the slot was occupied prior to
inserting/replacing.  I've also reinstated the fatal errors on messing
up opcode tables with duplicates.

	PR 26513
	* hash.h (htab_insert): Update prototype and comment.
	(struct string_tuple): Make "value" a const void*.
	(string_tuple_alloc): Likewise.
	(str_hash_find, str_hash_find_n): Cast returned value.
	(str_hash_insert): Add "replace" parameter, and return slot pointer.
	Free alloc'd element when not inserted.
	* hash.c (htab_insert): Likewise.  Return slot when element exists,
	otherwise return NULL.
	* read.c (pop_insert): Insert into hash table without first searching.
	* config/tc-avr.c (md_begin): Likewise.
	* config/tc-msp430.c (md_begin): Likewise.
	* config/tc-nds32.c (nds32_init_nds32_pseudo_opcodes): Likewise.
	* config/tc-v850.c (md_begin): Likewise.
	* macro.c (do_formals, define_macro, macro_expand_body): Likewise.
	(delete_macro): Delete from hash table.
	* config/tc-tic54x.c (subsym_create_or_replace): Correct logic.

	* symbols.c (local_symbol_make, symbol_table_insert): Allow
	replacement of hash table entries.
	* config/obj-coff-seh.c (seh_hash_insert): Likewise.
	* config/obj-coff.c (tag_insert): Likewise.
	* config/tc-iq2000.c (iq2000_add_macro): Likewise.
	* config/tc-m68k.c (md_begin): Likewise for aliases.
	* config/tc-tic4x.c (tic4x_asg): Likewise.
	* config/tc-tic6x.c (md_begin): Likewise.

	* dw2gencfi.c (dwcfi_hash_find_or_make): Disallow replacement of
	hash table entries.
	* ecoff.c (add_string, get_tag): Likewise.
	* macro.c (expand_irp): Likewise.
	* config/obj-elf.c (build_additional_section_info): Likewise.
	* config/tc-aarch64.c (insert_reg_alias): Likewise.
	(checked_hash_insert): Likewise.
	* config/tc-alpha.c (get_alpha_reloc_tag, md_begin): Likewise.
	* config/tc-arc.c (arc_insert_opcode, declare_register): Likewise.
	(declare_addrtype, md_begin, arc_extcorereg): Likewise.
	* config/tc-arm.c (insert_reg_alias): Likewise.
	(arm_tc_equal_in_insn, md_begin): Likewise.
	* config/tc-cr16.c (initialise_reg_hash_table, md_begin): Likewise.
	* config/tc-cris.c (md_begin): Likewise.
	* config/tc-crx.c (md_begin): Likewise.
	* config/tc-csky.c (md_begin): Likewise.
	* config/tc-d10v.c (md_begin): Likewise.
	* config/tc-dlx.c (md_begin): Likewise.
	* config/tc-ft32.c (md_begin): Likewise.
	* config/tc-h8300.c (md_begin): Likewise.
	* config/tc-hppa.c (md_begin): Likewise.
	* config/tc-i386.c (md_begin): Likewise.
	* config/tc-ia64.c (dot_rot, dot_entry, declare_register): Likewise.
	(md_begin, dot_alias): Likewise.
	* config/tc-m68hc11.c (md_begin): Likewise.
	* config/tc-m68k.c (md_begin): Likewise.
	* config/tc-mcore.c (md_begin): Likewise.
	* config/tc-microblaze.c (md_begin): Likewise.
	* config/tc-mips.c (md_begin): Likewise.
	* config/tc-mmix.c (md_begin): Likewise.
	* config/tc-mn10200.c (md_begin): Likewise.
	* config/tc-mn10300.c (md_begin): Likewise.
	* config/tc-moxie.c (md_begin): Likewise.
	* config/tc-nds32.c (nds32_relax_hint, md_begin): Likewise.
	* config/tc-nios2.c (md_begin): Likewise.
	* config/tc-ns32k.c (md_begin): Likewise.
	* config/tc-pdp11.c (md_begin): Likewise.
	* config/tc-pj.c (fake_opcode, md_begin): Likewise.
	* config/tc-ppc.c (ppc_setup_opcodes): Likewise.
	* config/tc-pru.c (md_begin): Likewise.
	* config/tc-riscv.c (init_ext_version_hash): Likewise.
	(init_opcode_names_hash, hash_reg_name, init_opcode_hash): Likewise.
	(riscv_init_csr_hash): Likewise.
	* config/tc-s390.c (s390_setup_opcodes, md_begin): Likewise.
	* config/tc-score.c (s3_insert_reg): Likewise.
	(s3_build_score_ops_hsh, s3_build_dependency_insn_hsh): Likewise.
	* config/tc-score7.c (s7_build_score_ops_hsh): Likewise.
	(s7_build_dependency_insn_hsh, s7_insert_reg): Likewise.
	* config/tc-sh.c (md_begin): Likewise.
	* config/tc-sparc.c (md_begin): Likewise.
	* config/tc-spu.c (md_begin): Likewise.
	* config/tc-tic30.c (md_begin): Likewise.
	* config/tc-tic4x.c (tic4x_inst_insert): Likewise.
	* config/tc-tic54x.c (stag_add_field_symbols, md_begin): Likewise.
	(tic54x_endstruct, tic54x_var, tic54x_macro_info): Likewise.
	(subsym_substitute): Likewise.
	* config/tc-tilegx.c (md_begin): Likewise.
	* config/tc-tilepro.c (md_begin): Likewise.
	* config/tc-vax.c (vip_begin): Likewise.
	* config/tc-wasm32.c (md_begin): Likewise.
	* config/tc-xgate.c (md_begin): Likewise.
	* config/tc-z8k.c (md_begin): Likewise.
	* testsuite/gas/ppc/dcbt.d,
	* testsuite/gas/ppc/dcbt.s: New test.
	* testsuite/gas/ppc/ppc.exp: Run it.

	* ecoff.c (add_string): Report fatal error on duplicates.
	* config/tc-alpha.c (md_begin): Likewise.
	* config/tc-arc.c (arc_insert_opcode, declare_register): Likewise.
	(declare_addrtype, md_begin, arc_extcorereg): Likewise.
	* config/tc-cr16.c (initialise_reg_hash_table, md_begin): Likewise.
	* config/tc-cris.c (md_begin): Likewise.
	* config/tc-crx.c (md_begin): Likewise.
	* config/tc-dlx.c (md_begin): Likewise.
	* config/tc-hppa.c (md_begin): Likewise.
	* config/tc-i386.c (md_begin): Likewise.
	* config/tc-ia64.c (dot_rot, dot_entry, declare_register): Likewise.
	(md_begin): Likewise.
	* config/tc-m68k.c (md_begin): Likewise.
	* config/tc-mips.c (md_begin): Likewise.
	* config/tc-nios2.c (md_begin): Likewise.
	* config/tc-ns32k.c (md_begin): Likewise.
	* config/tc-ppc.c (ppc_setup_opcodes): Likewise.
	* config/tc-pru.c (md_begin): Likewise.
	* config/tc-riscv.c (init_ext_version_hash): Likewise.
	(init_opcode_names_hash, hash_reg_name, init_opcode_hash): Likewise.
	* config/tc-s390.c (s390_setup_opcodes, md_begin): Likewise.
	* config/tc-sparc.c (md_begin): Likewise.
	* config/tc-tic30.c (md_begin): Likewise.
	* config/tc-tic4x.c (tic4x_inst_insert): Likewise.
	* config/tc-tilegx.c (md_begin): Likewise.
	* config/tc-tilepro.c (md_begin): Likewise.
	* config/tc-vax.c (vip_begin): Likewise.

	* config/tc-alpha.c,
	* config/tc-arm.c,
	* config/tc-avr.c,
	* config/tc-cr16.c,
	* config/tc-csky.c,
	* config/tc-i386.c,
	* config/tc-m68hc11.c,
	* config/tc-m68k.c,
	* config/tc-microblaze.c,
	* config/tc-ns32k.c,
	* config/tc-pj.c,
	* config/tc-ppc.c,
	* config/tc-score.c,
	* config/tc-score7.c,
	* config/tc-tic4x.c,
	* config/tc-tic54x.c,
	* config/tc-tilegx.c,
	* config/tc-tilepro.c,
	* config/tc-xgate.c: Formatting.
2020-08-23 21:38:05 +09:30
2020-08-23 00:00:08 +00:00
2020-07-04 10:16:22 +01:00
2020-02-20 13:02:24 +10:30
2019-12-26 06:54:58 +01:00
2020-02-07 08:42:25 -07:00
2020-02-07 08:42:25 -07:00

		   README for GNU development tools

This directory contains various GNU compilers, assemblers, linkers, 
debuggers, etc., plus their support routines, definitions, and documentation.

If you are receiving this as part of a GDB release, see the file gdb/README.
If with a binutils release, see binutils/README;  if with a libg++ release,
see libg++/README, etc.  That'll give you info about this
package -- supported targets, how to use it, how to report bugs, etc.

It is now possible to automatically configure and build a variety of
tools with one command.  To build all of the tools contained herein,
run the ``configure'' script here, e.g.:

	./configure 
	make

To install them (by default in /usr/local/bin, /usr/local/lib, etc),
then do:
	make install

(If the configure script can't determine your type of computer, give it
the name as an argument, for instance ``./configure sun4''.  You can
use the script ``config.sub'' to test whether a name is recognized; if
it is, config.sub translates it to a triplet specifying CPU, vendor,
and OS.)

If you have more than one compiler on your system, it is often best to
explicitly set CC in the environment before running configure, and to
also set CC when running make.  For example (assuming sh/bash/ksh):

	CC=gcc ./configure
	make

A similar example using csh:

	setenv CC gcc
	./configure
	make

Much of the code and documentation enclosed is copyright by
the Free Software Foundation, Inc.  See the file COPYING or
COPYING.LIB in the various directories, for a description of the
GNU General Public License terms under which you can copy the files.

REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info
on where and how to report problems.
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