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45 lines
2.2 KiB
C++
45 lines
2.2 KiB
C++
// SPDX-License-Identifier: MIT
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#pragma once
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#define STRINGY2(x, y) x##y
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#define STRINGY(x, y) STRINGY2(x, y)
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#define STRINGY12(x) STRINGY11(x)
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#define STRINGY11(x) #x
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#define STRINGY1(x) STRINGY12(x)
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#ifndef _BASIC_META
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// Meta typedef variable in unnamed and matches upstream
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// Use this for the super basic ioctl passthrough path
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#define _BASIC_META(x) \
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__attribute__((annotate("fex-match"))) \
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__attribute__((annotate("ioctl-alias-x86_32-_" #x STRINGY1(__LINE__)))) typedef uint8_t STRINGY(_##x, __LINE__)[x];
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#endif
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#ifndef _BASIC_META_VAR
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// This is similar to _BASIC_META except that it allows you to pass variadic arguments to the original ioctl definition
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#define _BASIC_META_VAR(x, args...) \
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__attribute__((annotate("fex-match"))) \
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__attribute__((annotate("ioctl-alias-x86_32-_" #x STRINGY1(__LINE__)))) typedef uint8_t STRINGY(_##x, __LINE__)[x(args)];
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#endif
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#ifndef _CUSTOM_META
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// IOCTL doesn't match across architecture
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// Generates a FEX_<name> version of the ioctl with custom ioctl definition
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// eg: _CUSTOM_META(DRM_IOCTL_AMDGPU_GEM_METADATA, DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_METADATA, FEX::HLE::x32::AMDGPU::fex_drm_amdgpu_gem_metadata));
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// Allows you to effectively pass in the original ioctl definition with custom type replacing the upstream type
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#define _CUSTOM_META(name, ioctl_num) \
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typedef uint8_t _meta_##name[name]; \
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__attribute__((annotate("ioctl-alias-x86_32-_meta_" #name))) typedef uint8_t _##name[ioctl_num]; \
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constexpr static uint32_t FEX_##name = ioctl_num;
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#endif
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#ifndef _CUSTOM_META_OFFSET
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// Same as _CUSTOM_META but allows you to define multiple types from an offset
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// Required to have an ioctl covering a range which some ioctls do
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#define _CUSTOM_META_OFFSET(name, ioctl_num, offset) \
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typedef uint8_t _meta_##name[ioctl_num + offset]; \
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__attribute__((annotate("ioctl-alias-x86_32-_meta_" #name))) typedef uint8_t _##name[ioctl_num + offset]; \
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constexpr static uint32_t FEX_##name = ioctl_num + offset;
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#endif
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