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SPDX standardizes how source code conveys its copyright and licensing information. See https://spdx.github.io/spdx-spec/1-rationale/ . SPDX tags are adopted in many large projects, including things like the Linux kernel.
36 lines
909 B
C++
36 lines
909 B
C++
// Copyright 2008 Dolphin Emulator Project
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// Copyright 2004 Duddie & Tratax
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <cstddef>
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#include "Common/CommonTypes.h"
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#include "Core/DSP/DSPCore.h"
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// Stacks. The stacks are outside the DSP RAM, in dedicated hardware.
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namespace DSP
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{
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void SDSP::StoreStack(StackRegister stack_reg, u16 val)
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{
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const auto reg_index = static_cast<size_t>(stack_reg);
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reg_stack_ptrs[reg_index]++;
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reg_stack_ptrs[reg_index] &= DSP_STACK_MASK;
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reg_stacks[reg_index][reg_stack_ptrs[reg_index]] = r.st[reg_index];
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r.st[reg_index] = val;
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}
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u16 SDSP::PopStack(StackRegister stack_reg)
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{
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const auto reg_index = static_cast<size_t>(stack_reg);
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const u16 val = r.st[reg_index];
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r.st[reg_index] = reg_stacks[reg_index][reg_stack_ptrs[reg_index]];
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reg_stack_ptrs[reg_index]--;
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reg_stack_ptrs[reg_index] &= DSP_STACK_MASK;
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return val;
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}
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} // namespace DSP
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