| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | #include <sys/ucontext.h> |
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| 3 | #define __FRAME_OFFSETS |
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| 4 | #include <asm/ptrace.h> |
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| 5 | #include <sysdep/ptrace.h> |
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| 6 | |
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| 7 | void get_regs_from_mc(struct uml_pt_regs *regs, mcontext_t *mc) |
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| 8 | { |
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| 9 | #ifdef __i386__ |
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| 10 | #define COPY2(X,Y) regs->gp[X] = mc->gregs[REG_##Y] |
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| 11 | #define COPY(X) regs->gp[X] = mc->gregs[REG_##X] |
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| 12 | #define COPY_SEG(X) regs->gp[X] = mc->gregs[REG_##X] & 0xffff; |
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| 13 | #define COPY_SEG_CPL3(X) regs->gp[X] = (mc->gregs[REG_##X] & 0xffff) | 3; |
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| 14 | COPY_SEG(GS); COPY_SEG(FS); COPY_SEG(ES); COPY_SEG(DS); |
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| 15 | COPY(EDI); COPY(ESI); COPY(EBP); |
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| 16 | COPY2(UESP, ESP); /* sic */ |
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| 17 | COPY(EBX); COPY(EDX); COPY(ECX); COPY(EAX); |
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| 18 | COPY(EIP); COPY_SEG_CPL3(CS); COPY(EFL); COPY_SEG_CPL3(SS); |
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| 19 | #else |
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| 20 | #define COPY2(X,Y) regs->gp[X/sizeof(unsigned long)] = mc->gregs[REG_##Y] |
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| 21 | #define COPY(X) regs->gp[X/sizeof(unsigned long)] = mc->gregs[REG_##X] |
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| 22 | COPY(R8); COPY(R9); COPY(R10); COPY(R11); |
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| 23 | COPY(R12); COPY(R13); COPY(R14); COPY(R15); |
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| 24 | COPY(RDI); COPY(RSI); COPY(RBP); COPY(RBX); |
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| 25 | COPY(RDX); COPY(RAX); COPY(RCX); COPY(RSP); |
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| 26 | COPY(RIP); |
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| 27 | COPY2(EFLAGS, EFL); |
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| 28 | COPY2(CS, CSGSFS); |
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| 29 | regs->gp[CS / sizeof(unsigned long)] &= 0xffff; |
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| 30 | regs->gp[CS / sizeof(unsigned long)] |= 3; |
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| 31 | #endif |
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| 32 | } |
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| 33 | |
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