dev/i386/systemcalls.c

87  * Inputs:	regs	- pointer to i386 save area
103 	x86_saved_state32_t	*regs;
108 	regs = saved_state32(state);
110 	if (regs->eax == 0x800)
125 		regs->eax = EPERM;
126 		regs->efl |= EFL_CF;
132 	code = regs->eax & I386_SYSCALL_NUMBER_MASK;
134 							  code, syscallnames[code >= NUM_SYSENT ? 63 : code], (uint32_t)regs->eip);
135 	args_in_uthread = ((regs->eax & I386_SYSCALL_ARG_BYTES_MASK) != 0) && x86_sysenter_arg_store_isvalid(thread);
136 	params = (vm_offset_t) (regs->uesp + sizeof (int));
138 	regs->efl &= ~(EFL_CF);
160 				regs->eax = error;
161 				regs->efl |= EFL_CF;
197 	uthread->uu_rval[1] = regs->edx;
230 		    regs->eax = error;
231 		    regs->efl |= EFL_CF;	/* carry bit */
233 		    regs->eax = uthread->uu_rval[0];
234 		    regs->edx = uthread->uu_rval[1];
240 		error, regs->eax, regs->edx);
285 	x86_saved_state64_t *regs;
288 	regs = saved_state64(state);
290 	if (regs->rax == 0x2000800)
304 		regs->rax = EPERM;
305 		regs->isf.rflags |= EFL_CF;
312 	code = regs->rax & SYSCALL_NUMBER_MASK;
315 		code, syscallnames[code >= NUM_SYSENT ? 63 : code], regs->isf.rip);
317 	uargp = (void *)(&regs->rdi);
324 	        code = regs->rdi;
326 		uargp = (void *)(&regs->rsi);
345 			error = copyin((user_addr_t)(regs->isf.rsp + sizeof(user_addr_t)), (char *)&regs->v_arg6, copyin_count);
347 				regs->rax = error;
348 				regs->isf.rflags |= EFL_CF;
406 			regs->rax = error;
407 			regs->isf.rflags |= EFL_CF;	/* carry bit */
412 				regs->rax = uthread->uu_rval[0];
413 				regs->rdx = uthread->uu_rval[1];
416 				regs->rax = ((u_int)uthread->uu_rval[0]);
417 				regs->rdx = ((u_int)uthread->uu_rval[1]);
424 			        regs->rax = *((uint64_t *)(&uthread->uu_rval[0]));
425 				regs->rdx = 0;
433 			regs->isf.rflags &= ~EFL_CF;
439 		error, regs->rax, regs->rdx);
488 		x86_saved_state64_t *regs;
490 		regs = saved_state64(find_user_regs(thread));
493 		code = regs->rax & SYSCALL_NUMBER_MASK;
501 			code = regs->rdi;
517 				regs->rax = error;
518 				regs->isf.rflags |= EFL_CF;	/* carry bit */
523 					regs->rax = uthread->uu_rval[0];
524 					regs->rdx = uthread->uu_rval[1];
527 					regs->rax = ((u_int)uthread->uu_rval[0]);
528 					regs->rdx = ((u_int)uthread->uu_rval[1]);
535 					regs->rax = *((uint64_t *)(&uthread->uu_rval[0]));
536 					regs->rdx = 0;
544 				regs->isf.rflags &= ~EFL_CF;
549 			error, regs->rax, regs->rdx);
551 		x86_saved_state32_t	*regs;
553 		regs = saved_state32(find_user_regs(thread));
555 		regs->efl &= ~(EFL_CF);
557 		code = regs->eax & I386_SYSCALL_NUMBER_MASK;
567 			params = (vm_offset_t) (regs->uesp + sizeof (int));
575 				regs->eax = error;
576 				regs->efl |= EFL_CF;	/* carry bit */
578 				regs->eax = uthread->uu_rval[0];
579 				regs->edx = uthread->uu_rval[1];
584 			error, regs->eax, regs->edx);