1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0 2*4882a593Smuzhiyun #include <sys/ucontext.h> 3*4882a593Smuzhiyun #define __FRAME_OFFSETS 4*4882a593Smuzhiyun #include <asm/ptrace.h> 5*4882a593Smuzhiyun #include <sysdep/ptrace.h> 6*4882a593Smuzhiyun get_regs_from_mc(struct uml_pt_regs * regs,mcontext_t * mc)7*4882a593Smuzhiyunvoid get_regs_from_mc(struct uml_pt_regs *regs, mcontext_t *mc) 8*4882a593Smuzhiyun { 9*4882a593Smuzhiyun #ifdef __i386__ 10*4882a593Smuzhiyun #define COPY2(X,Y) regs->gp[X] = mc->gregs[REG_##Y] 11*4882a593Smuzhiyun #define COPY(X) regs->gp[X] = mc->gregs[REG_##X] 12*4882a593Smuzhiyun #define COPY_SEG(X) regs->gp[X] = mc->gregs[REG_##X] & 0xffff; 13*4882a593Smuzhiyun #define COPY_SEG_CPL3(X) regs->gp[X] = (mc->gregs[REG_##X] & 0xffff) | 3; 14*4882a593Smuzhiyun COPY_SEG(GS); COPY_SEG(FS); COPY_SEG(ES); COPY_SEG(DS); 15*4882a593Smuzhiyun COPY(EDI); COPY(ESI); COPY(EBP); 16*4882a593Smuzhiyun COPY2(UESP, ESP); /* sic */ 17*4882a593Smuzhiyun COPY(EBX); COPY(EDX); COPY(ECX); COPY(EAX); 18*4882a593Smuzhiyun COPY(EIP); COPY_SEG_CPL3(CS); COPY(EFL); COPY_SEG_CPL3(SS); 19*4882a593Smuzhiyun #else 20*4882a593Smuzhiyun #define COPY2(X,Y) regs->gp[X/sizeof(unsigned long)] = mc->gregs[REG_##Y] 21*4882a593Smuzhiyun #define COPY(X) regs->gp[X/sizeof(unsigned long)] = mc->gregs[REG_##X] 22*4882a593Smuzhiyun COPY(R8); COPY(R9); COPY(R10); COPY(R11); 23*4882a593Smuzhiyun COPY(R12); COPY(R13); COPY(R14); COPY(R15); 24*4882a593Smuzhiyun COPY(RDI); COPY(RSI); COPY(RBP); COPY(RBX); 25*4882a593Smuzhiyun COPY(RDX); COPY(RAX); COPY(RCX); COPY(RSP); 26*4882a593Smuzhiyun COPY(RIP); 27*4882a593Smuzhiyun COPY2(EFLAGS, EFL); 28*4882a593Smuzhiyun COPY2(CS, CSGSFS); 29*4882a593Smuzhiyun regs->gp[CS / sizeof(unsigned long)] &= 0xffff; 30*4882a593Smuzhiyun regs->gp[CS / sizeof(unsigned long)] |= 3; 31*4882a593Smuzhiyun #endif 32*4882a593Smuzhiyun } 33