diff options
Diffstat (limited to 'Kernel/Arch')
| -rw-r--r-- | Kernel/Arch/i386/CPU.cpp | 34 | ||||
| -rw-r--r-- | Kernel/Arch/i386/CPU.h | 6 |
2 files changed, 39 insertions, 1 deletions
diff --git a/Kernel/Arch/i386/CPU.cpp b/Kernel/Arch/i386/CPU.cpp index 798e946f22..59d80c2d2b 100644 --- a/Kernel/Arch/i386/CPU.cpp +++ b/Kernel/Arch/i386/CPU.cpp @@ -2264,6 +2264,40 @@ void Processor::set_thread_specific(u8* data, size_t len) descriptor.set_limit(len); } +void copy_kernel_registers_into_ptrace_registers(PtraceRegisters& ptrace_regs, const RegisterState& kernel_regs) +{ + ptrace_regs.eax = kernel_regs.eax, + ptrace_regs.ecx = kernel_regs.ecx, + ptrace_regs.edx = kernel_regs.edx, + ptrace_regs.ebx = kernel_regs.ebx, + ptrace_regs.esp = kernel_regs.userspace_esp, + ptrace_regs.ebp = kernel_regs.ebp, + ptrace_regs.esi = kernel_regs.esi, + ptrace_regs.edi = kernel_regs.edi, + ptrace_regs.eip = kernel_regs.eip, + ptrace_regs.eflags = kernel_regs.eflags, + ptrace_regs.cs = 0; + ptrace_regs.ss = 0; + ptrace_regs.ds = 0; + ptrace_regs.es = 0; + ptrace_regs.fs = 0; + ptrace_regs.gs = 0; +} + +void copy_ptrace_registers_into_kernel_registers(RegisterState& kernel_regs, const PtraceRegisters& ptrace_regs) +{ + kernel_regs.eax = ptrace_regs.eax; + kernel_regs.ecx = ptrace_regs.ecx; + kernel_regs.edx = ptrace_regs.edx; + kernel_regs.ebx = ptrace_regs.ebx; + kernel_regs.esp = ptrace_regs.esp; + kernel_regs.ebp = ptrace_regs.ebp; + kernel_regs.esi = ptrace_regs.esi; + kernel_regs.edi = ptrace_regs.edi; + kernel_regs.eip = ptrace_regs.eip; + kernel_regs.eflags = (kernel_regs.eflags & ~safe_eflags_mask) | (ptrace_regs.eflags & safe_eflags_mask); +} + } #ifdef DEBUG diff --git a/Kernel/Arch/i386/CPU.h b/Kernel/Arch/i386/CPU.h index 325f637bed..ae3e79a32b 100644 --- a/Kernel/Arch/i386/CPU.h +++ b/Kernel/Arch/i386/CPU.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org> + * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -32,6 +32,7 @@ #include <AK/Vector.h> #include <Kernel/PhysicalAddress.h> #include <Kernel/VirtualAddress.h> +#include <LibC/sys/arch/i386/regs.h> #define PAGE_SIZE 4096 #define GENERIC_INTERRUPT_HANDLERS_COUNT (256 - IRQ_VECTOR_BASE) @@ -494,6 +495,9 @@ struct [[gnu::packed]] RegisterState { #define REGISTER_STATE_SIZE (19 * 4) static_assert(REGISTER_STATE_SIZE == sizeof(RegisterState)); +void copy_kernel_registers_into_ptrace_registers(PtraceRegisters&, const RegisterState&); +void copy_ptrace_registers_into_kernel_registers(RegisterState&, const PtraceRegisters&); + struct [[gnu::aligned(16)]] FPUState { u8 buffer[512]; |