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toolchain: define ZRESTRICT for restrict aliasing

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restrict keyword is not supported in C++, however
GNUC does support __restrict for C/C++ so we can use that,
however the complexity of toolchains requires a ZRESTRICT
symbol that should be used throughout the codebase to not
cause any conflicts or redefinition errors

Signed-off-by: Nicholas Lowell <nlowell@lexmark.com>
This commit is contained in:
Nicholas Lowell 2020-07-29 14:34:59 -04:00 • committed by Carles Cufí
commit 0d31403318
2 changed files with 14 additions and 0 deletions
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8
include/toolchain/common.h
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@ -26,6 +26,14 @@
#define TASK_ENTRY_CPP extern "C" #define TASK_ENTRY_CPP extern "C"
#endif #endif
#ifndef ZRESTRICT
#ifndef __cplusplus
#define ZRESTRICT restrict
#else
#define ZRESTRICT
#endif
#endif
/* /*
* Generate a reference to an external symbol. * Generate a reference to an external symbol.
* The reference indicates to the linker that the symbol is required * The reference indicates to the linker that the symbol is required

6
include/toolchain/gcc.h
View file

@ -63,6 +63,12 @@
#define BUILD_ASSERT(EXPR, MSG...) #define BUILD_ASSERT(EXPR, MSG...)
#endif #endif
#ifdef __cplusplus
#define ZRESTRICT __restrict
#else
#define ZRESTRICT restrict
#endif
#include <toolchain/common.h> #include <toolchain/common.h>
#include <stdbool.h> #include <stdbool.h>