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Merge pull request #3424 from douzzer/fix-save-vector-registers-gating

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wc_port.h: improve/fix gating on {SAVE,RESTORE}_VECTOR_REGISTERS()
This commit is contained in:
David Garske
2020-10-26 15:33:00 -07:00
committed by GitHub
parent 74b834a78c fd5a309a47
commit 2ebb47ec32
1 changed files with 21 additions and 7 deletions
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28
wolfssl/wolfcrypt/wc_port.h
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@ -99,15 +99,27 @@
#else
#include <asm/simd.h>
#endif
#define SAVE_VECTOR_REGISTERS() kernel_fpu_begin()
#define RESTORE_VECTOR_REGISTERS() kernel_fpu_end()
#ifndef SAVE_VECTOR_REGISTERS
#define SAVE_VECTOR_REGISTERS() kernel_fpu_begin()
#endif
#ifndef RESTORE_VECTOR_REGISTERS
#define RESTORE_VECTOR_REGISTERS() kernel_fpu_end()
#endif
#elif defined(WOLFSSL_ARMASM)
#include <asm/fpsimd.h>
#define SAVE_VECTOR_REGISTERS() ({ preempt_disable(); fpsimd_preserve_current_state(); })
#define RESTORE_VECTOR_REGISTERS() ({ fpsimd_restore_current_state(); preempt_enable(); })
#ifndef SAVE_VECTOR_REGISTERS
#define SAVE_VECTOR_REGISTERS() ({ preempt_disable(); fpsimd_preserve_current_state(); })
#endif
#ifndef RESTORE_VECTOR_REGISTERS
#define RESTORE_VECTOR_REGISTERS() ({ fpsimd_restore_current_state(); preempt_enable(); })
#endif
#else
#define SAVE_VECTOR_REGISTERS() ({})
#define RESTORE_VECTOR_REGISTERS() ({})
#ifndef SAVE_VECTOR_REGISTERS
#define SAVE_VECTOR_REGISTERS() ({})
#endif
#ifndef RESTORE_VECTOR_REGISTERS
#define RESTORE_VECTOR_REGISTERS() ({})
#endif
#endif
_Pragma("GCC diagnostic pop");
@ -157,8 +169,10 @@
#else /* ! WOLFSSL_LINUXKM */
#ifdef BUILDING_WOLFSSL
#ifndef SAVE_VECTOR_REGISTERS
#define SAVE_VECTOR_REGISTERS() do{}while(0)
#endif
#ifndef RESTORE_VECTOR_REGISTERS
#define RESTORE_VECTOR_REGISTERS() do{}while(0)
#endif