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32 lines
1.1 KiB
32 lines
1.1 KiB
// SPDX-License-Identifier: GPL-2.0 |
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#include <sys/ucontext.h> |
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#define __FRAME_OFFSETS |
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#include <asm/ptrace.h> |
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#include <sysdep/ptrace.h> |
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void get_regs_from_mc(struct uml_pt_regs *regs, mcontext_t *mc) |
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{ |
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#ifdef __i386__ |
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#define COPY2(X,Y) regs->gp[X] = mc->gregs[REG_##Y] |
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#define COPY(X) regs->gp[X] = mc->gregs[REG_##X] |
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#define COPY_SEG(X) regs->gp[X] = mc->gregs[REG_##X] & 0xffff; |
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#define COPY_SEG_CPL3(X) regs->gp[X] = (mc->gregs[REG_##X] & 0xffff) | 3; |
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COPY_SEG(GS); COPY_SEG(FS); COPY_SEG(ES); COPY_SEG(DS); |
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COPY(EDI); COPY(ESI); COPY(EBP); |
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COPY2(UESP, ESP); /* sic */ |
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COPY(EBX); COPY(EDX); COPY(ECX); COPY(EAX); |
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COPY(EIP); COPY_SEG_CPL3(CS); COPY(EFL); COPY_SEG_CPL3(SS); |
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#else |
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#define COPY2(X,Y) regs->gp[X/sizeof(unsigned long)] = mc->gregs[REG_##Y] |
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#define COPY(X) regs->gp[X/sizeof(unsigned long)] = mc->gregs[REG_##X] |
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COPY(R8); COPY(R9); COPY(R10); COPY(R11); |
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COPY(R12); COPY(R13); COPY(R14); COPY(R15); |
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COPY(RDI); COPY(RSI); COPY(RBP); COPY(RBX); |
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COPY(RDX); COPY(RAX); COPY(RCX); COPY(RSP); |
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COPY(RIP); |
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COPY2(EFLAGS, EFL); |
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COPY2(CS, CSGSFS); |
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regs->gp[CS / sizeof(unsigned long)] &= 0xffff; |
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regs->gp[CS / sizeof(unsigned long)] |= 3; |
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#endif |
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}
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