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Adding RP2350 SDK and target framework (#13988)

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* Adding RP2350 SDK and target framework

* Spacing

* Removing board definitions
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J Blackman 2024-10-23 10:02:48 +11:00 • committed by GitHub
parent 462cb05930
commit 2dd6f95aad
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217
lib/main/pico-sdk/rp2_common/pico_atomic/atomic.c Normal file
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/*
* Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdatomic.h>
#include "pico/sync.h"
// We use __builtin_mem* to avoid libc dependency.
#define memcpy __builtin_memcpy
#define memcmp __builtin_memcmp
static inline uint32_t atomic_lock(__unused const volatile void *ptr) {
return spin_lock_blocking(spin_lock_instance(PICO_SPINLOCK_ID_ATOMIC));
}
static inline void atomic_unlock(__unused const volatile void *ptr, uint32_t save) {
spin_unlock(spin_lock_instance(PICO_SPINLOCK_ID_ATOMIC), save);
}
#if PICO_C_COMPILER_IS_GNU
_Bool __atomic_test_and_set_c(volatile void *mem, __unused int model) {
uint32_t save = atomic_lock(mem);
bool result = *(volatile bool *) mem;
*(volatile bool *) mem = true;
atomic_unlock(mem, save);
return result;
}
#define __atomic_load_c __atomic_load
#define __atomic_store_c __atomic_store
#define __atomic_exchange_c __atomic_exchange
#define __atomic_compare_exchange_c __atomic_compare_exchange
#define __atomic_is_lock_free_c __atomic_is_lock_free
#else
// Clang objects if you redefine a builtin.
#pragma redefine_extname __atomic_load_c __atomic_load
#pragma redefine_extname __atomic_store_c __atomic_store
#pragma redefine_extname __atomic_exchange_c __atomic_exchange
#pragma redefine_extname __atomic_compare_exchange_c __atomic_compare_exchange
#pragma redefine_extname __atomic_is_lock_free_c __atomic_is_lock_free
#endif
// Whether atomic operations for the given size (and alignment) are lock-free.
bool __atomic_is_lock_free_c(__unused size_t size, __unused const volatile void *ptr) {
#if !__ARM_ARCH_6M__
if (size == 1 || size == 2 || size == 4) {
size_t align = size - 1;
return (((uintptr_t)ptr) & align) == 0;
}
#endif
return false;
}
// An atomic load operation. This is atomic with respect to the source pointer only.
void __atomic_load_c(uint size, const volatile void *src, void *dest, __unused int model) {
uint32_t save = atomic_lock(src);
memcpy(dest, remove_volatile_cast_no_barrier(const void *, src), size);
atomic_unlock(src, save);
}
// An atomic store operation. This is atomic with respect to the destination
// pointer only.
void __atomic_store_c(uint size, volatile void *dest, void *src, __unused int model) {
uint32_t save = atomic_lock(src);
memcpy(remove_volatile_cast_no_barrier(void *, dest), src, size);
atomic_unlock(src, save);
}
// Atomic compare and exchange operation. If the value at *ptr is identical
// to the value at *expected, then this copies value at *desired to *ptr. If
// they are not, then this stores the current value from *ptr in *expected.
//
// This function returns 1 if the exchange takes place or 0 if it fails.
_Bool __atomic_compare_exchange_c(uint size, volatile void *ptr, void *expected,
void *desired, __unused int success, __unused int failure) {
uint32_t save = atomic_lock(ptr);
if (memcmp(remove_volatile_cast_no_barrier(void *, ptr), expected, size) == 0) {
memcpy(remove_volatile_cast_no_barrier(void *, ptr), desired, size);
atomic_unlock(ptr, save);
return 1;
}
memcpy(expected, remove_volatile_cast_no_barrier(void *, ptr), size);
atomic_unlock(ptr, save);
return 0;
}
// Performs an atomic exchange operation between two pointers. This is atomic
// with respect to the target address.
void __atomic_exchange_c(uint size, volatile void *ptr, void *val, void *old, __unused int model) {
uint32_t save = atomic_lock(ptr);
memcpy(old, remove_volatile_cast_no_barrier(void *, ptr), size);
memcpy(remove_volatile_cast_no_barrier(void *, ptr), val, size);
atomic_unlock(ptr, save);
}
#if __ARM_ARCH_6M__
#define ATOMIC_OPTIMIZED_CASES \
ATOMIC_OPTIMIZED_CASE(1, uint8_t) \
ATOMIC_OPTIMIZED_CASE(2, uint16_t) \
ATOMIC_OPTIMIZED_CASE(4, uint) \
ATOMIC_OPTIMIZED_CASE(8, uint64_t)
#else
#define ATOMIC_OPTIMIZED_CASES \
ATOMIC_OPTIMIZED_CASE(8, uint64_t)
#endif
#define ATOMIC_OPTIMIZED_CASE(n, type) \
type __atomic_load_##n(const volatile void *src, __unused int memorder) { \
uint32_t save = atomic_lock(src); \
type val = *(const volatile type *)src; \
atomic_unlock(src, save); \
return val; \
}
ATOMIC_OPTIMIZED_CASES
#undef ATOMIC_OPTIMIZED_CASE
#define ATOMIC_OPTIMIZED_CASE(n, type) \
void __atomic_store_##n(volatile void *dest, type val, __unused int model) { \
uint32_t save = atomic_lock(dest); \
*(volatile type *)dest = val; \
atomic_unlock(dest, save); \
}
ATOMIC_OPTIMIZED_CASES
#undef ATOMIC_OPTIMIZED_CASE
#define ATOMIC_OPTIMIZED_CASE(n, type) \
bool __atomic_compare_exchange_##n(volatile void *ptr, void *expected, type desired, \
__unused bool weak, __unused int success, __unused int failure) { \
uint32_t save = atomic_lock(ptr); \
if (*(volatile type *)ptr == *(type *)expected) { \
*(volatile type *)ptr = desired; \
atomic_unlock(ptr, save); \
return true; \
} \
*(type *)expected = *(volatile type *)ptr; \
atomic_unlock(ptr, save); \
return false; \
}
ATOMIC_OPTIMIZED_CASES
#undef ATOMIC_OPTIMIZED_CASE
#define ATOMIC_OPTIMIZED_CASE(n, type) \
type __atomic_exchange_##n(volatile void *dest, type val, __unused int model) { \
uint32_t save = atomic_lock(dest); \
type tmp = *(volatile type *)dest; \
*(volatile type *)dest = val; \
atomic_unlock(dest, save); \
return tmp; \
}
ATOMIC_OPTIMIZED_CASES
#undef ATOMIC_OPTIMIZED_CASE
// Atomic read-modify-write operations for integers of various sizes.
#define ATOMIC_RMW(n, type, opname, op) \
type __atomic_fetch_##opname##_##n(volatile void *ptr, type val, __unused int model) { \
uint32_t save = atomic_lock(ptr); \
type tmp = *(volatile type *)ptr; \
*(volatile type *)ptr = tmp op val; \
atomic_unlock(ptr, save); \
return tmp; \
}
#define ATOMIC_RMW_NAND(n, type) \
type __atomic_fetch_nand_##n(type *ptr, type val, __unused int model) { \
uint32_t save = atomic_lock(ptr); \
type tmp = *ptr; \
*ptr = ~(tmp & val); \
atomic_unlock(ptr, save); \
return tmp; \
}
#define ATOMIC_OPTIMIZED_CASE(n, type) ATOMIC_RMW(n, type, add, +)
ATOMIC_OPTIMIZED_CASES
#undef ATOMIC_OPTIMIZED_CASE
#define ATOMIC_OPTIMIZED_CASE(n, type) ATOMIC_RMW(n, type, sub, -)
ATOMIC_OPTIMIZED_CASES
#undef ATOMIC_OPTIMIZED_CASE
#define ATOMIC_OPTIMIZED_CASE(n, type) ATOMIC_RMW(n, type, and, &)
ATOMIC_OPTIMIZED_CASES
#undef ATOMIC_OPTIMIZED_CASE
#define ATOMIC_OPTIMIZED_CASE(n, type) ATOMIC_RMW(n, type, or, |)
ATOMIC_OPTIMIZED_CASES
#undef ATOMIC_OPTIMIZED_CASE
#define ATOMIC_OPTIMIZED_CASE(n, type) ATOMIC_RMW(n, type, xor, ^)
ATOMIC_OPTIMIZED_CASES
#undef ATOMIC_OPTIMIZED_CASE
#if __has_builtin(__c11_atomic_fetch_nand)
#define ATOMIC_OPTIMIZED_CASE(n, type) ATOMIC_RMW_NAND(n, type)
ATOMIC_OPTIMIZED_CASES
#undef ATOMIC_OPTIMIZED_CASE
#endif

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lib/main/pico-sdk/rp2_common/pico_atomic/include/stdatomic.h Normal file
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/*
* Copyright (c) 2024 Raspberry Pi (Trading) Ltd.
* Copyright (c) 2024 Stephen Street (stephen@redrocketcomputing.com).
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef __STDATOMIC_H
#define __STDATOMIC_H
#ifdef __cplusplus
extern "C" {
#endif
/** \file stdatomic.h
* \defgroup pico_atomic pico_atomic
*
* \brief Helper implementations for C11 atomics
*
* \if rp2040_specific
* On RP2040 a spin lock is used as protection for all atomic operations, since there is no C library support.
* \endif
*
* \if rp2350_specific
* On RP2350 the C-library provides implementations for all 1-byte, 2-byte and 4-byte atomics using processor
* exclusive operations. This library provides a spin-lock protected version for arbitrary-sized atomics (including 64-bit).
* \endif
*/
#include <stdint.h>
#include_next <stdatomic.h>
// needed for PICO_C_COMPILER_IS_GNU
#include "pico.h"
#if PICO_RP2040 && PICO_C_COMPILER_IS_GNU
// on GNU without exclusive instructions these don't get routed thru _1 functions for some reason
#undef atomic_flag_test_and_set
#undef atomic_flag_test_and_set_explicit
extern _Bool __atomic_test_and_set_c(volatile void *mem, int model);
#define atomic_flag_test_and_set(PTR) __atomic_test_and_set_c((PTR), __ATOMIC_SEQ_CST)
#define atomic_flag_test_and_set_explicit(PTR, MO) __atomic_test_and_set_c((PTR), (MO))
#endif
#ifdef __cplusplus
}
#endif
#endif