From 3966726333b2a4cf54333549c8331d833364266e Mon Sep 17 00:00:00 2001
From: David Edelsohn <dje.gcc@gmail.com>
Date: Thu, 24 Jun 2021 15:40:25 -0400
Subject: [PATCH] aix: Add AIX 7.3 configuration and SPDX License Identifiers.

	The anticipated release of AIX 7.3 has been announced.  This
	patch adds the configuration bits based on AIX 7.2 configuration.

gcc/ChangeLog:

	* config.gcc: Add SPDX License Identifier.
	(powerpc-ibm-aix789): Default to aix73.h.
	(powerpc-ibm-aix7.2.*.*): New stanza.
	* config/rs6000/aix72.h: Add SPDX License Identifier.
	* config/rs6000/aix73.h: New file.
---
 gcc/config.gcc            |  16 ++-
 gcc/config/rs6000/aix72.h |   5 +-
 gcc/config/rs6000/aix73.h | 294 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 312 insertions(+), 3 deletions(-)
 create mode 100644 gcc/config/rs6000/aix73.h

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 1be8d96f5e5..0230bb88861 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
 # GCC target-specific configuration file.
 # Copyright (C) 1997-2020 Free Software Foundation, Inc.
 
@@ -3099,7 +3100,7 @@ rs6000-ibm-aix7.1.* | powerpc-ibm-aix7.1.*)
 	use_gcc_stdint=wrap
 	default_use_cxa_atexit=yes
 	;;
-rs6000-ibm-aix[789].* | powerpc-ibm-aix[789].*)
+rs6000-ibm-aix7.2.* | powerpc-ibm-aix7.2.*)
 	tmake_file="rs6000/t-aix52 t-slibgcc"
 	if test x$cpu_is_64bit = xyes; then
 	    tm_file="${tm_file} rs6000/biarch64.h"
@@ -3112,6 +3113,19 @@ rs6000-ibm-aix[789].* | powerpc-ibm-aix[789].*)
 	use_gcc_stdint=wrap
 	default_use_cxa_atexit=yes
 	;;
+rs6000-ibm-aix[789].* | powerpc-ibm-aix[789].*)
+	tmake_file="rs6000/t-aix52 t-slibgcc"
+	if test x$cpu_is_64bit = xyes; then
+	    tm_file="${tm_file} rs6000/biarch64.h"
+	    tmake_file="rs6000/t-aix64 t-slibgcc"
+	fi
+	tm_file="${tm_file} rs6000/aix.h rs6000/aix73.h rs6000/xcoff.h rs6000/aix-stdint.h"
+	extra_options="${extra_options} rs6000/aix64.opt"
+	use_collect2=yes
+	thread_file='aix'
+	use_gcc_stdint=wrap
+	default_use_cxa_atexit=yes
+	;;
 rl78-*-elf*)
 	tm_file="dbxelf.h elfos.h newlib-stdint.h ${tm_file}"
 	target_has_targetm_common=no
diff --git a/gcc/config/rs6000/aix72.h b/gcc/config/rs6000/aix72.h
index 4cd27e3fdd4..a497a7d8541 100644
--- a/gcc/config/rs6000/aix72.h
+++ b/gcc/config/rs6000/aix72.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
 /* Definitions of target machine for GNU compiler,
    for IBM RS/6000 POWER running AIX V7.2.
    Copyright (C) 2002-2020 Free Software Foundation, Inc.
@@ -124,7 +125,7 @@ do {									\
   %{mpe: -I%R/usr/lpp/ppe.poe/include}		\
   %{pthread: -D_THREAD_SAFE}"
 
-/* The GNU C++ standard library requires that these macros be 
+/* The GNU C++ standard library requires that these macros be
    defined.  Synchronize with libstdc++ os_defines.h.  */
 #define CPLUSPLUS_CPP_SPEC_COMMON		\
   "-D_ALL_SOURCE -D__COMPATMATH__		\
@@ -254,7 +255,7 @@ do {									\
 #define LD_INIT_SWITCH "-binitfini"
 
 #ifndef _AIX52
-extern long long int    atoll(const char *);  
+extern long long int    atoll(const char *);
 #endif
 
 /* This target uses the aix64.opt file.  */
diff --git a/gcc/config/rs6000/aix73.h b/gcc/config/rs6000/aix73.h
new file mode 100644
index 00000000000..c707c7e76b6
--- /dev/null
+++ b/gcc/config/rs6000/aix73.h
@@ -0,0 +1,294 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+/* Definitions of target machine for GNU compiler,
+   for IBM RS/6000 POWER running AIX V7.3.
+   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+   Contributed by David Edelsohn (edelsohn@gnu.org).
+
+   This file is part of GCC.
+
+   GCC 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, or (at your
+   option) any later version.
+
+   GCC 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 GCC; see the file COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.  */
+
+/* The macro SUBTARGET_OVERRIDE_OPTIONS is provided for subtargets, to
+   get control in TARGET_OPTION_OVERRIDE.  */
+
+#define SUBTARGET_OVERRIDE_OPTIONS					\
+do {									\
+  if (TARGET_64BIT && ! TARGET_POWERPC64)				\
+    {									\
+      rs6000_isa_flags |= OPTION_MASK_POWERPC64;			\
+      warning (0, "%<-maix64%> requires PowerPC64 architecture remain enabled"); \
+    }									\
+  if (TARGET_SOFT_FLOAT && TARGET_LONG_DOUBLE_128)			\
+    {									\
+      rs6000_long_double_type_size = 64;				\
+      if (global_options_set.x_rs6000_long_double_type_size)		\
+	warning (0, "soft-float and long-double-128 are incompatible");	\
+    }									\
+  if (TARGET_POWERPC64 && ! TARGET_64BIT)				\
+    {									\
+      error ("%<-maix64%> required: 64-bit computation with 32-bit addressing not yet supported"); \
+    }									\
+  if ((rs6000_isa_flags_explicit					\
+       & OPTION_MASK_MINIMAL_TOC) != 0)					\
+    {									\
+      if (global_options_set.x_rs6000_current_cmodel			\
+	  && rs6000_current_cmodel != CMODEL_SMALL)			\
+	error ("%<-mcmodel%> incompatible with other toc options"); 	\
+      SET_CMODEL (CMODEL_SMALL);					\
+    }									\
+  if (rs6000_current_cmodel != CMODEL_SMALL)				\
+    {									\
+      TARGET_NO_FP_IN_TOC = 1;						\
+      TARGET_NO_SUM_IN_TOC = 1;						\
+    }									\
+  if (rs6000_current_cmodel == CMODEL_MEDIUM)				\
+    {									\
+      rs6000_current_cmodel = CMODEL_LARGE;				\
+    }									\
+  if (! strcmp (lang_hooks.name, "GNU Go")				\
+      && TARGET_32BIT)							\
+    {									\
+      /* aix/ppc doesn't support -mvsx and -maltivec with Go */		\
+      rs6000_isa_flags &= ~(OPTION_MASK_VSX | OPTION_MASK_ALTIVEC);	\
+    }									\
+  if (!global_options_set.x_dwarf_version)				\
+    /* AIX only supports DWARF 4.  */					\
+    dwarf_version = 4;							\
+} while (0)
+
+#define ASM_SPEC32 "-a32"
+#define ASM_SPEC64 "-a64"
+#define ASM_SPEC_COMMON "-u %(asm_cpu)"
+
+/* Common ASM definitions used by ASM_SPEC amongst the various targets for
+   handling -mcpu=xxx switches.  There is a parallel list in driver-rs6000.c to
+   provide the default assembler options if the user uses -mcpu=native, so if
+   you make changes here, make them there also.  */
+#undef ASM_CPU_SPEC
+#define ASM_CPU_SPEC \
+"%{mcpu=native: %(asm_cpu_native); \
+  mcpu=power10: -mpwr10; \
+  mcpu=power9: -mpwr9; \
+  mcpu=power8: -mpwr8; \
+  mcpu=power7: -mpwr7; \
+  mcpu=power6x|mcpu=power6: -mpwr6; \
+  mcpu=power5+: -mpwr5x; \
+  mcpu=power5: -mpwr5; \
+  mcpu=power4: -mpwr4; \
+  mcpu=power3: -m620; \
+  mcpu=powerpc: -mppc; \
+  mcpu=rs64: -mppc; \
+  mcpu=603: -m603; \
+  mcpu=603e: -m603; \
+  mcpu=604: -m604; \
+  mcpu=604e: -m604; \
+  mcpu=620: -m620; \
+  mcpu=630: -m620; \
+  mcpu=970|mcpu=G5: -m970; \
+  !mcpu*: %(asm_default)} \
+-many"
+
+#undef	ASM_DEFAULT_SPEC
+#define ASM_DEFAULT_SPEC "-mpwr7"
+
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS()     \
+  do                                 \
+    {                                \
+      builtin_define ("_AIX43");     \
+      builtin_define ("_AIX51");     \
+      builtin_define ("_AIX52");     \
+      builtin_define ("_AIX53");     \
+      builtin_define ("_AIX61");     \
+      builtin_define ("_AIX71");     \
+      builtin_define ("_AIX72");     \
+      builtin_define ("_AIX73");     \
+      TARGET_OS_AIX_CPP_BUILTINS (); \
+    }                                \
+  while (0)
+
+#define CPP_SPEC32 ""
+#define CPP_SPEC64 "-D__64BIT__"
+#define CPP_SPEC_COMMON "%{posix: -D_POSIX_SOURCE} \
+  %{ansi: -D_ANSI_C_SOURCE}			\
+  %{mpe: -I%R/usr/lpp/ppe.poe/include}		\
+  %{pthread: -D_THREAD_SAFE}"
+
+/* The GNU C++ standard library requires that these macros be
+   defined.  Synchronize with libstdc++ os_defines.h.  */
+#define CPLUSPLUS_CPP_SPEC_COMMON		\
+  "-D_ALL_SOURCE -D__COMPATMATH__		\
+   %{mpe: -I%R/usr/lpp/ppe.poe/include}		\
+   %{pthread: -D_THREAD_SAFE}"
+
+#define RS6000_CPU(NAME, CPU, FLAGS)
+#include "rs6000-cpus.def"
+#undef RS6000_CPU
+
+#undef  TARGET_DEFAULT
+#ifdef RS6000_BI_ARCH
+#define TARGET_DEFAULT (ISA_2_6_MASKS_EMBEDDED | MASK_POWERPC64 | MASK_64BIT)
+#else
+#define TARGET_DEFAULT ISA_2_6_MASKS_EMBEDDED
+#endif
+
+#undef  PROCESSOR_DEFAULT
+#define PROCESSOR_DEFAULT PROCESSOR_POWER7
+#undef  PROCESSOR_DEFAULT64
+#define PROCESSOR_DEFAULT64 PROCESSOR_POWER7
+
+/* AIX 7.2 kernel and assembler have necessary support for Altivec and VSX.  */
+#undef OS_MISSING_ALTIVEC
+
+/* Define this macro as a C expression for the initializer of an
+   array of string to tell the driver program which options are
+   defaults for this target and thus do not need to be handled
+   specially when using `MULTILIB_OPTIONS'.
+
+   Do not define this macro if `MULTILIB_OPTIONS' is not defined in
+   the target makefile fragment or if none of the options listed in
+   `MULTILIB_OPTIONS' are set by default.  *Note Target Fragment::.  */
+
+#undef MULTILIB_DEFAULTS
+
+#define DEFAULT_ARCH64_P (TARGET_DEFAULT & MASK_64BIT)
+
+#define LIB_SPEC32 "%{!shared:%{g*:-lg}}"
+#define LIB_SPEC64 ""
+#define LIB_SPEC_COMMON "%{pg:-L%R/lib/profiled -L%R/usr/lib/profiled}\
+   %{p:-L%R/lib/profiled -L%R/usr/lib/profiled}\
+   %{fprofile-arcs|fprofile-generate*|coverage:-lpthreads}\
+   %{mpe:-L%R/usr/lpp/ppe.poe/lib -lmpi -lvtd}\
+   %{mlong-double-128:-lc128}\
+   %{pthread:-lpthreads} -lc"
+
+#define LINK_SPEC32 "%{!shared:%{g*: %(link_libg) }} -b32"
+#define LINK_SPEC64 "-b64"
+#define LINK_SPEC_COMMON "-bpT:0x10000000 -bpD:0x20000000 %{!r:-btextro}\
+   %{static:-bnso %(link_syscalls) } %{shared:-bM:SRE %{!e:-bnoentry}}\
+   %{mpe:-binitfini:poe_remote_main} "
+
+#undef STARTFILE_SPEC
+#if DEFAULT_ARCH64_P
+#define STARTFILE_SPEC "%{!shared:\
+   %{!maix32:%{pg:gcrt0_64%O%s;:%{p:mcrt0_64%O%s;:crt0_64%O%s}};:\
+     %{pthread:%{pg:gcrt0_r%O%s;:%{p:mcrt0_r%O%s;:crt0_r%O%s}};:\
+       %{pg:gcrt0%O%s;:%{p:mcrt0%O%s;:crt0%O%s}}}}}\
+   %{!maix32:%{shared:crtcxa_64_s%O%s;:crtcxa_64%O%s} crtdbase_64%O%s;:\
+     %{shared:crtcxa_s%O%s;:crtcxa%O%s} crtdbase%O%s}"
+#else
+#define STARTFILE_SPEC "%{!shared:\
+   %{maix64:%{pg:gcrt0_64%O%s;:%{p:mcrt0_64%O%s;:crt0_64%O%s}};:\
+     %{pthread:%{pg:gcrt0_r%O%s;:%{p:mcrt0_r%O%s;:crt0_r%O%s}};:\
+       %{pg:gcrt0%O%s;:%{p:mcrt0%O%s;:crt0%O%s}}}}}\
+   %{maix64:%{shared:crtcxa_64_s%O%s;:crtcxa_64%O%s} crtdbase_64%O%s;:\
+     %{shared:crtcxa_s%O%s;:crtcxa%O%s} crtdbase%O%s}"
+#endif
+
+
+#undef ASM_SPEC
+#undef CPP_SPEC
+#undef CPLUSPLUS_CPP_SPEC
+#undef LIB_SPEC
+#undef LINK_SPEC
+
+#if DEFAULT_ARCH64_P
+#define ASM_SPEC "%{maix32:%(asm_spec32);:%(asm_spec64)} %(asm_spec_common)"
+#define CPP_SPEC "%{maix32:%(cpp_spec32);:%(cpp_spec64)} %(cpp_spec_common)"
+#define CPLUSPLUS_CPP_SPEC "%{maix32:%(cpp_spec32);:%(cpp_spec64)} %(cplusplus_cpp_spec_common)"
+#define LIB_SPEC "%{maix32:%(lib_spec32);:%(lib_spec64)} %(lib_spec_common)"
+#define LINK_SPEC "%{maix32:%(link_spec32);:%(link_spec64)} %(link_spec_common)"
+#else
+#define ASM_SPEC "%{maix64:%(asm_spec64);:%(asm_spec32)} %(asm_spec_common)"
+#define CPP_SPEC "%{maix64:%(cpp_spec64);:%(cpp_spec32)} %(cpp_spec_common)"
+#define CPLUSPLUS_CPP_SPEC "%{maix64:%(cpp_spec64);:%(cpp_spec32)} %(cplusplus_cpp_spec_common)"
+#define LIB_SPEC "%{maix64:%(lib_spec64);:%(lib_spec32)} %(lib_spec_common)"
+#define LINK_SPEC "%{maix64:%(link_spec64);:%(link_spec32)} %(link_spec_common)"
+#endif
+
+#undef SUBTARGET_EXTRA_SPECS
+#define SUBTARGET_EXTRA_SPECS					\
+  { "asm_spec_common",		ASM_SPEC_COMMON },		\
+  { "asm_spec32",		ASM_SPEC32 },			\
+  { "asm_spec64",		ASM_SPEC64 },			\
+  { "cpp_spec_common",		CPP_SPEC_COMMON },		\
+  { "cplusplus_cpp_spec_common", CPLUSPLUS_CPP_SPEC_COMMON },	\
+  { "cpp_spec32",		CPP_SPEC32 },			\
+  { "cpp_spec64",		CPP_SPEC64 },			\
+  { "lib_spec_common",		LIB_SPEC_COMMON },		\
+  { "lib_spec32",		LIB_SPEC32 },			\
+  { "lib_spec64",		LIB_SPEC64 },			\
+  { "link_spec_common",		LINK_SPEC_COMMON },		\
+  { "link_spec32",		LINK_SPEC32 },			\
+  { "link_spec64",		LINK_SPEC64 },
+
+/* AIX V5 typedefs ptrdiff_t as "long" while earlier releases used "int".  */
+
+#undef PTRDIFF_TYPE
+#define PTRDIFF_TYPE "long int"
+
+/* Type used for wchar_t, as a string used in a declaration.  */
+#undef  WCHAR_TYPE
+#define WCHAR_TYPE (!TARGET_64BIT ? "short unsigned int" : "unsigned int")
+
+/* Width of wchar_t in bits.  */
+#undef  WCHAR_TYPE_SIZE
+#define WCHAR_TYPE_SIZE (!TARGET_64BIT ? 16 : 32)
+
+/* AIX 4.2 and above provides initialization and finalization function
+   support from linker command line.  */
+#undef HAS_INIT_SECTION
+#define HAS_INIT_SECTION
+
+#undef LD_INIT_SWITCH
+#define LD_INIT_SWITCH "-binitfini"
+
+#ifndef _AIX52
+extern long long int    atoll(const char *);
+#endif
+
+/* This target uses the aix64.opt file.  */
+#define TARGET_USES_AIX64_OPT 1
+
+/* Large TOC Support */
+#ifdef HAVE_LD_LARGE_TOC
+#undef TARGET_CMODEL
+#define TARGET_CMODEL rs6000_current_cmodel
+#define SET_CMODEL(opt) rs6000_current_cmodel = opt
+#else
+#define SET_CMODEL(opt) do {} while (0)
+#endif
+
+/* This target defines SUPPORTS_WEAK and TARGET_ASM_NAMED_SECTION,
+   but does not have crtbegin/end.  */
+
+#define TARGET_AIX_VERSION 72
+
+/* AIX 7.2 supports DWARF3+ debugging.  */
+#define DWARF2_DEBUGGING_INFO 1
+#define PREFERRED_DEBUGGING_TYPE XCOFF_DEBUG
+#define DEBUG_INFO_SECTION	"0x10000"
+#define DEBUG_LINE_SECTION	"0x20000"
+#define DEBUG_PUBNAMES_SECTION	"0x30000"
+#define DEBUG_PUBTYPES_SECTION	"0x40000"
+#define DEBUG_ARANGES_SECTION	"0x50000"
+#define DEBUG_ABBREV_SECTION	"0x60000"
+#define DEBUG_STR_SECTION	"0x70000"
+#define DEBUG_RANGES_SECTION	"0x80000"
+#define DEBUG_LOC_SECTION	"0x90000"
+#define DEBUG_FRAME_SECTION	"0xA0000"
+#define DEBUG_MACINFO_SECTION	"0xB0000"
+#define DEBUG_MACRO_SECTION	"0xB0000"
+
-- 
2.31.1

