29 lines
1.1 KiB
C++
29 lines
1.1 KiB
C++
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// nisps/core/perf.hpp — RP2040/RP2350 memory section + inlining attributes.
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//
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// On firmware builds the macros expand to GCC/Pico-specific section attributes
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// so hot code/data lives in SRAM instead of XIP flash. On every other build
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// (host tests, Emscripten/WASM) they are inert — the discipline of marking
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// audio-critical declarations is preserved syntactically without affecting
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// codegen.
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//
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// See architecture.md §3.4.
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#pragma once
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#if defined(ARDUINO_ARCH_RP2040) || defined(ARDUINO_ARCH_RP2350)
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// Pico SDK provides __not_in_flash and __not_in_flash_func.
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// __not_in_flash takes a section name string; __not_in_flash_func wraps the
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// declaration directly.
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#define NISPS_AUDIO_MEM __not_in_flash("audio")
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#define NISPS_AUDIO_FUNC __not_in_flash_func
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#define NISPS_APP_SRAM __not_in_flash("app")
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#define NISPS_FORCE_INLINE __attribute__((always_inline)) inline
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#define NISPS_HOT __attribute__((hot))
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#else
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#define NISPS_AUDIO_MEM
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#define NISPS_AUDIO_FUNC(decl) decl
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#define NISPS_APP_SRAM
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#define NISPS_FORCE_INLINE inline
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#define NISPS_HOT
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#endif
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