mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Jamie Liu
aecf514158
We don't implement any of the `pkey_*` syscalls, so applications can't use protection keys. Updates #10087 PiperOrigin-RevId: 611287272
62 lines
2.4 KiB
C
62 lines
2.4 KiB
C
// Copyright 2020 The gVisor 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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// http://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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#ifndef THIRD_PARTY_GVISOR_PKG_SENTRY_PLATFORM_SYSTRAP_SYSMSG_SYSMSG_OFFSETS_H_
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#define THIRD_PARTY_GVISOR_PKG_SENTRY_PLATFORM_SYSTRAP_SYSMSG_SYSMSG_OFFSETS_H_
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// FAULT_OPCODE is the opcode of the invalid instruction that is used to replace
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// the first byte of the syscall instruction. More details in the description
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// for the pkg/sentry/platform/systrap/usertrap package.
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#define FAULT_OPCODE 0x06
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// The value for XCR0 is defined to xsave/xrstor everything except for PKRU and
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// AMX regions.
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// TODO(gvisor.dev/issues/9896): Implement AMX support.
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// TODO(gvisor.dev/issues/10087): Implement PKRU support.
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#define XCR0_DISABLED_MASK ((1 << 9) | (1 << 17) | (1 << 18))
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#define XCR0_EAX (0xffffffff ^ XCR0_DISABLED_MASK)
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#define XCR0_EDX 0xffffffff
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// LINT.IfChange
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#define MAX_FPSTATE_LEN 3584
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// Note: To be explicit, 2^12 = 4096; if ALLOCATED_SIZEOF_THREAD_CONTEXT_STRUCT
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// is changed, make sure to change the code that relies on the bitshift.
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#define ALLOCATED_SIZEOF_THREAD_CONTEXT_STRUCT 4096
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#define THREAD_CONTEXT_STRUCT_BITSHIFT 12
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// LINT.ThenChange(sysmsg.go)
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// LINT.IfChange
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// Define offsets in the struct sysmsg to use them in assembly files.
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// Each offset has to have BUILD_BUG_ON in sighandler.c.
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#define offsetof_sysmsg_self 0x0
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#define offsetof_sysmsg_ret_addr 0x8
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#define offsetof_sysmsg_syshandler 0x10
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#define offsetof_sysmsg_syshandler_stack 0x18
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#define offsetof_sysmsg_app_stack 0x20
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#define offsetof_sysmsg_interrupt 0x28
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#define offsetof_sysmsg_state 0x2c
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#define offsetof_sysmsg_context 0x30
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#define offsetof_thread_context_fpstate 0x0
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#define offsetof_thread_context_fpstate_changed MAX_FPSTATE_LEN
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#define offsetof_thread_context_ptregs 0x8 + MAX_FPSTATE_LEN
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#define kTHREAD_STATE_NONE 0
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#define kTHREAD_STATE_INTERRUPT 3
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// LINT.ThenChange(sysmsg.h, sysmsg_lib.c)
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#endif // THIRD_PARTY_GVISOR_PKG_SENTRY_PLATFORM_SYSTRAP_SYSMSG_SYSMSG_OFFSETS_H_
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