first conversion attempt
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@ -1,11 +1,11 @@
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/**************************************************************************//**
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* @file cmsis_gcc.h
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* @brief CMSIS compiler GCC header file
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* @version V5.0.4
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* @date 09. April 2018
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* @version V5.2.0
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* @date 08. May 2019
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******************************************************************************/
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/*
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* Copyright (c) 2009-2018 Arm Limited. All rights reserved.
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* Copyright (c) 2009-2019 Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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@ -113,7 +113,74 @@
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#ifndef __RESTRICT
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#define __RESTRICT __restrict
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#endif
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#ifndef __COMPILER_BARRIER
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#define __COMPILER_BARRIER() __ASM volatile("":::"memory")
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#endif
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/* ######################### Startup and Lowlevel Init ######################## */
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#ifndef __PROGRAM_START
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/**
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\brief Initializes data and bss sections
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\details This default implementations initialized all data and additional bss
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sections relying on .copy.table and .zero.table specified properly
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in the used linker script.
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*/
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__STATIC_FORCEINLINE __NO_RETURN void __cmsis_start(void)
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{
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extern void _start(void) __NO_RETURN;
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typedef struct {
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uint32_t const* src;
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uint32_t* dest;
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uint32_t wlen;
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} __copy_table_t;
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typedef struct {
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uint32_t* dest;
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uint32_t wlen;
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} __zero_table_t;
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extern const __copy_table_t __copy_table_start__;
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extern const __copy_table_t __copy_table_end__;
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extern const __zero_table_t __zero_table_start__;
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extern const __zero_table_t __zero_table_end__;
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for (__copy_table_t const* pTable = &__copy_table_start__; pTable < &__copy_table_end__; ++pTable) {
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for(uint32_t i=0u; i<pTable->wlen; ++i) {
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pTable->dest[i] = pTable->src[i];
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}
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}
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for (__zero_table_t const* pTable = &__zero_table_start__; pTable < &__zero_table_end__; ++pTable) {
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for(uint32_t i=0u; i<pTable->wlen; ++i) {
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pTable->dest[i] = 0u;
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}
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}
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_start();
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}
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#define __PROGRAM_START __cmsis_start
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#endif
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#ifndef __INITIAL_SP
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#define __INITIAL_SP __StackTop
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#endif
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#ifndef __STACK_LIMIT
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#define __STACK_LIMIT __StackLimit
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#endif
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#ifndef __VECTOR_TABLE
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#define __VECTOR_TABLE __Vectors
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#endif
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#ifndef __VECTOR_TABLE_ATTRIBUTE
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#define __VECTOR_TABLE_ATTRIBUTE __attribute((used, section(".vectors")))
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#endif
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/* ########################### Core Function Access ########################### */
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/** \ingroup CMSIS_Core_FunctionInterface
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@ -1008,7 +1075,23 @@ __STATIC_FORCEINLINE uint32_t __RBIT(uint32_t value)
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\param [in] value Value to count the leading zeros
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\return number of leading zeros in value
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*/
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#define __CLZ (uint8_t)__builtin_clz
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__STATIC_FORCEINLINE uint8_t __CLZ(uint32_t value)
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{
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/* Even though __builtin_clz produces a CLZ instruction on ARM, formally
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__builtin_clz(0) is undefined behaviour, so handle this case specially.
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This guarantees ARM-compatible results if happening to compile on a non-ARM
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target, and ensures the compiler doesn't decide to activate any
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optimisations using the logic "value was passed to __builtin_clz, so it
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is non-zero".
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ARM GCC 7.3 and possibly earlier will optimise this test away, leaving a
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single CLZ instruction.
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*/
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if (value == 0U)
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{
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return 32U;
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}
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return __builtin_clz(value);
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}
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#if ((defined (__ARM_ARCH_7M__ ) && (__ARM_ARCH_7M__ == 1)) || \
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