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binutils-gdb/include/elf/ppc.h
Alan Modra 14b57c7c6a PowerPC VLE 
VLE is an encoding, not a particular processor architecture, so it
isn't really proper to select insns based on PPC_OPCODE_VLE.  For
example
{"evaddw",  VX (4, 512), VX_MASK, PPCSPE|PPCVLE, PPCNONE, {RS, RA, RB}},
{"vaddubs", VX (4, 512), VX_MASK, PPCVEC|PPCVLE, PPCNONE, {VD, VA, VB}},
shows two insns that have the same encoding, both available with VLE.
Enabling both with VLE means we can't disassemble the second variant
even if -Maltivec is given rather than -Mspe.  Also, we don't check
user assembly against the processor type as well as we could.

Another problem is that when using the VLE encoding, insns from the
main ppc opcode table are not available, except those using opcode 4
and 31.  Correcting this revealed two errors in the ld testsuite,
use of "nop" and "rfmci" when -mvle.

This patch fixes those problems in the opcode table, and removes
PPCNONE.  I find a plain 0 distracts less from other values.

In addition, I've implemented code to recognize some machine values
from the apuinfo note present in ppc32 objects.  It's not a complete
disambiguation since we're lacking info to detect newer chips, but
what we have should help with disassembly.

include/
	* elf/ppc.h (APUINFO_SECTION_NAME, APUINFO_LABEL, PPC_APUINFO_ISEL,
	PPC_APUINFO_PMR, PPC_APUINFO_RFMCI, PPC_APUINFO_CACHELCK,
	PPC_APUINFO_SPE, PPC_APUINFO_EFS, PPC_APUINFO_BRLOCK,
	PPC_APUINFO_VLE: Define.
opcodes/
	* ppc-dis.c (ppc_opts): Delete extraneous parentheses.  Default
	cpu for "vle" to e500.
	* ppc-opc.c (ALLOW8_SPRG): Remove PPC_OPCODE_VLE.
	(NO371, PPCSPE, PPCISEL, PPCEFS, MULHW, DCBT_EO): Likewise.
	(PPCNONE): Delete, substitute throughout.
	(powerpc_opcodes): Remove PPCVLE from "flags".  Add to "deprecated"
	except for major opcode 4 and 31.
	(vle_opcodes <se_rfmci>): Add PPCRFMCI to flags.
bfd/
	* cpu-powerpc.c (powerpc_compatible): Allow bfd_mach_ppc_vle entry
	to match other 32-bit archs.
	* elf32-ppc.c (_bfd_elf_ppc_set_arch): New function.
	(ppc_elf_object_p): Call it.
	(ppc_elf_special_sections): Use APUINFO_SECTION_NAME.  Fix
	overlong line.
	(APUINFO_SECTION_NAME, APUINFO_LABEL): Don't define here.
	* elf64-ppc.c (ppc64_elf_object_p): Call _bfd_elf_ppc_set_arch.
	* bfd-in.h (_bfd_elf_ppc_at_tls_transform,
	_bfd_elf_ppc_at_tprel_transform): Move to..
	* elf-bfd.h: ..here.
	(_bfd_elf_ppc_set_arch): Declare.
	* bfd-in2.h: Regenerate.
gas/
	* config/tc-ppc.c (PPC_APUINFO_ISEL, PPC_APUINFO_PMR,
	PPC_APUINFO_RFMCI, PPC_APUINFO_CACHELCK, PPC_APUINFO_SPE,
	PPC_APUINFO_EFS, PPC_APUINFO_BRLOCK, PPC_APUINFO_VLE): Don't define.
	(ppc_setup_opcodes): Check vle disables powerpc_opcodes overridden
	by vle_opcodes, and that vle flag doesn't enable opcodes.  Don't
	add vle_opcodes twice.
	(ppc_cleanup): Use APUINFO_SECTION_NAME and APUINFO_LABEL.
ld/
	* testsuite/ld-powerpc/apuinfo1.s: Delete nop.
	* testsuite/ld-powerpc/apuinfo-vle2.s: New.
	* testsuite/ld-powerpc/powerpc.exp: Use apuinfo-vle2.s.
2016-06-07 22:04:38 +09:30

240 lines
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/* PPC ELF support for BFD.
Copyright (C) 1995-2016 Free Software Foundation, Inc.
By Michael Meissner, Cygnus Support, <meissner@cygnus.com>,
from information in the System V Application Binary Interface,
PowerPC Processor Supplement and the PowerPC Embedded Application
Binary Interface (eabi).
This file is part of BFD, the Binary File Descriptor library.
This program 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 3 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
/* This file holds definitions specific to the PPC ELF ABI. Note
that most of this is not actually implemented by BFD. */
#ifndef _ELF_PPC_H
#define _ELF_PPC_H
#include "elf/reloc-macros.h"
/* Relocations. */
START_RELOC_NUMBERS (elf_ppc_reloc_type)
RELOC_NUMBER (R_PPC_NONE, 0)
RELOC_NUMBER (R_PPC_ADDR32, 1)
RELOC_NUMBER (R_PPC_ADDR24, 2)
RELOC_NUMBER (R_PPC_ADDR16, 3)
RELOC_NUMBER (R_PPC_ADDR16_LO, 4)
RELOC_NUMBER (R_PPC_ADDR16_HI, 5)
RELOC_NUMBER (R_PPC_ADDR16_HA, 6)
RELOC_NUMBER (R_PPC_ADDR14, 7)
RELOC_NUMBER (R_PPC_ADDR14_BRTAKEN, 8)
RELOC_NUMBER (R_PPC_ADDR14_BRNTAKEN, 9)
RELOC_NUMBER (R_PPC_REL24, 10)
RELOC_NUMBER (R_PPC_REL14, 11)
RELOC_NUMBER (R_PPC_REL14_BRTAKEN, 12)
RELOC_NUMBER (R_PPC_REL14_BRNTAKEN, 13)
RELOC_NUMBER (R_PPC_GOT16, 14)
RELOC_NUMBER (R_PPC_GOT16_LO, 15)
RELOC_NUMBER (R_PPC_GOT16_HI, 16)
RELOC_NUMBER (R_PPC_GOT16_HA, 17)
RELOC_NUMBER (R_PPC_PLTREL24, 18)
RELOC_NUMBER (R_PPC_COPY, 19)
RELOC_NUMBER (R_PPC_GLOB_DAT, 20)
RELOC_NUMBER (R_PPC_JMP_SLOT, 21)
RELOC_NUMBER (R_PPC_RELATIVE, 22)
RELOC_NUMBER (R_PPC_LOCAL24PC, 23)
RELOC_NUMBER (R_PPC_UADDR32, 24)
RELOC_NUMBER (R_PPC_UADDR16, 25)
RELOC_NUMBER (R_PPC_REL32, 26)
RELOC_NUMBER (R_PPC_PLT32, 27)
RELOC_NUMBER (R_PPC_PLTREL32, 28)
RELOC_NUMBER (R_PPC_PLT16_LO, 29)
RELOC_NUMBER (R_PPC_PLT16_HI, 30)
RELOC_NUMBER (R_PPC_PLT16_HA, 31)
RELOC_NUMBER (R_PPC_SDAREL16, 32)
RELOC_NUMBER (R_PPC_SECTOFF, 33)
RELOC_NUMBER (R_PPC_SECTOFF_LO, 34)
RELOC_NUMBER (R_PPC_SECTOFF_HI, 35)
RELOC_NUMBER (R_PPC_SECTOFF_HA, 36)
RELOC_NUMBER (R_PPC_ADDR30, 37)
#ifndef RELOC_MACROS_GEN_FUNC
/* Fake relocations for branch stubs, only used internally by ld. */
RELOC_NUMBER (R_PPC_RELAX, 48)
RELOC_NUMBER (R_PPC_RELAX_PLT, 49)
RELOC_NUMBER (R_PPC_RELAX_PLTREL24, 50)
#endif
/* Relocs added to support TLS. */
RELOC_NUMBER (R_PPC_TLS, 67)
RELOC_NUMBER (R_PPC_DTPMOD32, 68)
RELOC_NUMBER (R_PPC_TPREL16, 69)
RELOC_NUMBER (R_PPC_TPREL16_LO, 70)
RELOC_NUMBER (R_PPC_TPREL16_HI, 71)
RELOC_NUMBER (R_PPC_TPREL16_HA, 72)
RELOC_NUMBER (R_PPC_TPREL32, 73)
RELOC_NUMBER (R_PPC_DTPREL16, 74)
RELOC_NUMBER (R_PPC_DTPREL16_LO, 75)
RELOC_NUMBER (R_PPC_DTPREL16_HI, 76)
RELOC_NUMBER (R_PPC_DTPREL16_HA, 77)
RELOC_NUMBER (R_PPC_DTPREL32, 78)
RELOC_NUMBER (R_PPC_GOT_TLSGD16, 79)
RELOC_NUMBER (R_PPC_GOT_TLSGD16_LO, 80)
RELOC_NUMBER (R_PPC_GOT_TLSGD16_HI, 81)
RELOC_NUMBER (R_PPC_GOT_TLSGD16_HA, 82)
RELOC_NUMBER (R_PPC_GOT_TLSLD16, 83)
RELOC_NUMBER (R_PPC_GOT_TLSLD16_LO, 84)
RELOC_NUMBER (R_PPC_GOT_TLSLD16_HI, 85)
RELOC_NUMBER (R_PPC_GOT_TLSLD16_HA, 86)
RELOC_NUMBER (R_PPC_GOT_TPREL16, 87)
RELOC_NUMBER (R_PPC_GOT_TPREL16_LO, 88)
RELOC_NUMBER (R_PPC_GOT_TPREL16_HI, 89)
RELOC_NUMBER (R_PPC_GOT_TPREL16_HA, 90)
RELOC_NUMBER (R_PPC_GOT_DTPREL16, 91)
RELOC_NUMBER (R_PPC_GOT_DTPREL16_LO, 92)
RELOC_NUMBER (R_PPC_GOT_DTPREL16_HI, 93)
RELOC_NUMBER (R_PPC_GOT_DTPREL16_HA, 94)
RELOC_NUMBER (R_PPC_TLSGD, 95)
RELOC_NUMBER (R_PPC_TLSLD, 96)
/* The remaining relocs are from the Embedded ELF ABI, and are not
in the SVR4 ELF ABI. */
RELOC_NUMBER (R_PPC_EMB_NADDR32, 101)
RELOC_NUMBER (R_PPC_EMB_NADDR16, 102)
RELOC_NUMBER (R_PPC_EMB_NADDR16_LO, 103)
RELOC_NUMBER (R_PPC_EMB_NADDR16_HI, 104)
RELOC_NUMBER (R_PPC_EMB_NADDR16_HA, 105)
RELOC_NUMBER (R_PPC_EMB_SDAI16, 106)
RELOC_NUMBER (R_PPC_EMB_SDA2I16, 107)
RELOC_NUMBER (R_PPC_EMB_SDA2REL, 108)
RELOC_NUMBER (R_PPC_EMB_SDA21, 109)
RELOC_NUMBER (R_PPC_EMB_MRKREF, 110)
RELOC_NUMBER (R_PPC_EMB_RELSEC16, 111)
RELOC_NUMBER (R_PPC_EMB_RELST_LO, 112)
RELOC_NUMBER (R_PPC_EMB_RELST_HI, 113)
RELOC_NUMBER (R_PPC_EMB_RELST_HA, 114)
RELOC_NUMBER (R_PPC_EMB_BIT_FLD, 115)
RELOC_NUMBER (R_PPC_EMB_RELSDA, 116)
/* PowerPC VLE relocations. */
RELOC_NUMBER (R_PPC_VLE_REL8, 216)
RELOC_NUMBER (R_PPC_VLE_REL15, 217)
RELOC_NUMBER (R_PPC_VLE_REL24, 218)
RELOC_NUMBER (R_PPC_VLE_LO16A, 219)
RELOC_NUMBER (R_PPC_VLE_LO16D, 220)
RELOC_NUMBER (R_PPC_VLE_HI16A, 221)
RELOC_NUMBER (R_PPC_VLE_HI16D, 222)
RELOC_NUMBER (R_PPC_VLE_HA16A, 223)
RELOC_NUMBER (R_PPC_VLE_HA16D, 224)
RELOC_NUMBER (R_PPC_VLE_SDA21, 225)
RELOC_NUMBER (R_PPC_VLE_SDA21_LO, 226)
RELOC_NUMBER (R_PPC_VLE_SDAREL_LO16A, 227)
RELOC_NUMBER (R_PPC_VLE_SDAREL_LO16D, 228)
RELOC_NUMBER (R_PPC_VLE_SDAREL_HI16A, 229)
RELOC_NUMBER (R_PPC_VLE_SDAREL_HI16D, 230)
RELOC_NUMBER (R_PPC_VLE_SDAREL_HA16A, 231)
RELOC_NUMBER (R_PPC_VLE_SDAREL_HA16D, 232)
/* Power9 split rel16 for addpcis. */
RELOC_NUMBER (R_PPC_REL16DX_HA, 246)
/* Support STT_GNU_IFUNC plt calls. */
RELOC_NUMBER (R_PPC_IRELATIVE, 248)
/* These are GNU extensions used in PIC code sequences. */
RELOC_NUMBER (R_PPC_REL16, 249)
RELOC_NUMBER (R_PPC_REL16_LO, 250)
RELOC_NUMBER (R_PPC_REL16_HI, 251)
RELOC_NUMBER (R_PPC_REL16_HA, 252)
/* These are GNU extensions to enable C++ vtable garbage collection. */
RELOC_NUMBER (R_PPC_GNU_VTINHERIT, 253)
RELOC_NUMBER (R_PPC_GNU_VTENTRY, 254)
/* This is a phony reloc to handle any old fashioned TOC16 references
that may still be in object files. */
RELOC_NUMBER (R_PPC_TOC16, 255)
END_RELOC_NUMBERS (R_PPC_max)
#define IS_PPC_TLS_RELOC(R) \
((R) >= R_PPC_TLS && (R) <= R_PPC_GOT_DTPREL16_HA)
/* Specify the value of _GLOBAL_OFFSET_TABLE_. */
#define DT_PPC_GOT (DT_LOPROC)
/* Specify that tls descriptors should be optimized. */
#define DT_PPC_OPT (DT_LOPROC + 1)
#define PPC_OPT_TLS 1
/* Processor specific flags for the ELF header e_flags field. */
#define EF_PPC_EMB 0x80000000 /* PowerPC embedded flag. */
#define EF_PPC_RELOCATABLE 0x00010000 /* PowerPC -mrelocatable flag. */
#define EF_PPC_RELOCATABLE_LIB 0x00008000 /* PowerPC -mrelocatable-lib flag. */
/* Processor specific program headers, p_flags field. */
#define PF_PPC_VLE 0x10000000 /* PowerPC VLE. */
/* Processor specific section headers, sh_flags field. */
#define SHF_PPC_VLE 0x10000000 /* PowerPC VLE text section. */
/* Processor specific section headers, sh_type field. */
#define SHT_ORDERED SHT_HIPROC /* Link editor is to sort the \
entries in this section \
based on the address \
specified in the associated \
symbol table entry. */
/* APUinfo note section. */
#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
#define APUINFO_LABEL "APUinfo"
#define PPC_APUINFO_ISEL 0x40
#define PPC_APUINFO_PMR 0x41
#define PPC_APUINFO_RFMCI 0x42
#define PPC_APUINFO_CACHELCK 0x43
#define PPC_APUINFO_SPE 0x100
#define PPC_APUINFO_EFS 0x101
#define PPC_APUINFO_BRLOCK 0x102
#define PPC_APUINFO_VLE 0x104
/* Object attribute tags. */
enum
{
/* 0-3 are generic. */
Tag_GNU_Power_ABI_FP = 4, /* Value 1 for hard-float, 2 for
soft-float, 3 for single=precision
hard-float; 0 for not tagged or not
using any ABIs affected by the
differences. */
/* Value 1 for general purpose registers only, 2 for AltiVec
registers, 3 for SPE registers; 0 for not tagged or not using any
ABIs affected by the differences. */
Tag_GNU_Power_ABI_Vector = 8,
/* Value 1 for ABIs using r3/r4 for returning structures <= 8 bytes,
2 for ABIs using memory; 0 for not tagged or not using any ABIs
affected by the differences. */
Tag_GNU_Power_ABI_Struct_Return = 12
};
#endif /* _ELF_PPC_H */
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