56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
// Copyright 2019 The Marl Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#define MARL_REG_EBX 0x00
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#define MARL_REG_EBP 0x04
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#define MARL_REG_ESI 0x08
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#define MARL_REG_EDI 0x0c
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#define MARL_REG_ESP 0x10
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#define MARL_REG_EIP 0x14
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#ifndef MARL_BUILD_ASM
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#include <stdint.h>
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// Assumes cdecl calling convention.
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// Registers EAX, ECX, and EDX are caller-saved, and the rest are callee-saved.
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struct marl_fiber_context {
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// callee-saved registers
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uintptr_t EBX;
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uintptr_t EBP;
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uintptr_t ESI;
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uintptr_t EDI;
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// stack and instruction registers
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uintptr_t ESP;
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uintptr_t EIP;
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};
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#ifdef __cplusplus
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#include <cstddef>
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static_assert(offsetof(marl_fiber_context, EBX) == MARL_REG_EBX,
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"Bad register offset");
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static_assert(offsetof(marl_fiber_context, EBP) == MARL_REG_EBP,
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"Bad register offset");
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static_assert(offsetof(marl_fiber_context, ESI) == MARL_REG_ESI,
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"Bad register offset");
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static_assert(offsetof(marl_fiber_context, EDI) == MARL_REG_EDI,
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"Bad register offset");
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static_assert(offsetof(marl_fiber_context, ESP) == MARL_REG_ESP,
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"Bad register offset");
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static_assert(offsetof(marl_fiber_context, EIP) == MARL_REG_EIP,
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"Bad register offset");
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#endif // __cplusplus
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#endif // MARL_BUILD_ASM
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