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/* rust-target.def -- Target hook definitions for the Rust front end.
Copyright (C) 2020-2022 Free Software Foundation, Inc.
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, 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; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
/* See target-hooks-macros.h for details of macros that should be
provided by the including file, and how to use them here. */
#include "target-hooks-macros.h"
#undef HOOK_TYPE
#define HOOK_TYPE "Rust Target Hook"
HOOK_VECTOR (TARGETRUSTM_INITIALIZER, gcc_targetrustm)
#undef HOOK_PREFIX
#define HOOK_PREFIX "TARGET_"
/* Environmental CPU info and features (e.g. endianness, pointer size) relating to the target CPU. */
DEFHOOK
(rust_cpu_info,
"Declare all environmental CPU info and features relating to the target CPU\n\
using the function @code{rust_add_target_info}, which takes a string representing\n\
the feature key and a string representing the feature value. Configuration pairs\n\
predefined by this hook apply to all files that are being compiled.",
void, (void),
hook_void_void)
// TODO: remove: format of DEFHOOK is return type, (param types), default value for function that it translates to
/* Environmental OS info relating to the target OS. */
DEFHOOK
(/*d_os_versions*/rust_os_info,
"Similar to @code{TARGET_RUST_CPU_INFO}, but is used for configuration info\n\
relating to the target operating system.",
void, (void),
hook_void_void)
/* The sizeof CRITICAL_SECTION or pthread_mutex_t. */
/*DEFHOOK
(d_critsec_size,
"Returns the size of the data structure used by the target operating system\n\
for critical sections and monitors. For example, on Microsoft Windows this\n\
would return the @code{sizeof(CRITICAL_SECTION)}, while other platforms that\n\
implement pthreads would return @code{sizeof(pthread_mutex_t)}.",
unsigned, (void),
hook_uint_void_0)*/
/* TODO: add more if required. Possible ones include static C runtime, target_env
* or vendor (if not covered by OS), and flags from the driver that may or may not
* require a target hook (might instead require a different type of hook) like
* test, debug_assertions, and proc_macro. */
/* TODO: rustc target support by tier:
* Tier 1 (definitely work):
* - i686-pc-windows-gnu
* - i686-pc-windows-msvc
* - i686-unknown-linux-gnu
* - x86_64-apple-darwin
* - x86_64-pc-windows-gnu
* - x86_64-pc-windows-msvc
* - x86_64-unknown-linux-gnu
* - Basically, 32-bit and 64-bit x86 for windows (MinGW and MSVC), gnu/linux, and osx
* Other tiers have too much crap, but basic breakdown is:
* Tier 2:
* - archs: ARM64 (aarch64), ARMv7, ARMv6, asm.js, i586 (32-bit x86 without SSE), mips,
* mips64, powerpc, powerpc64, risc-v, s390x, sparc, webasm, netbsd, redox (does gcc have support?),
* cloudabi (never head of it; i imagine no gcc support)
* - oses: ios, fuchsia, android, windows (msvc and mingw), gnu/linux, freebsd, netbsd
* Tier 2.5:
* - powerpc SPE linux, various cloudabi stuff, sparc
* Tier 3:
* - more obscure stuff like UWP support, vxworks, openbsd, dragonflybsd, haiku, bitrig, windows xp,
* cuda, hexagon, and combinations of them and earlier stuff */
/* Close the 'struct gcc_targetrustm' definition. */
HOOK_VECTOR_END (C90_EMPTY_HACK)
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