/* $OpenBSD: pcb.h,v 1.1 2004/04/26 12:34:05 miod Exp $ */ /* * Copyright (c) 1996 Nivas Madhur * Mach Operating System * Copyright (c) 1993-1992 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON AND OMRON ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON AND OMRON DISCLAIM ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ /* * Motorola 88100 pcb definitions * */ /* */ #ifndef _M88K_PCB_H_ #define _M88K_PCB_H_ #include /* * Our PCB is the regular PCB+Save area for kernel frame. * Upon entering kernel mode from user land, save the user context * in the saved_state area - this is passed as the exception frame. * On a context switch, only registers that need to be saved by the * C calling convention and few other regs (pc, psr etc) are saved * in the kernel_state part of the PCB. Typically, trap frames are * saved on the stack (by low level handlers or by hardware) but, * we just decided to do it in the PCB. */ struct m88100_pcb { unsigned pcb_pc; /* address to return */ unsigned pcb_ipl; unsigned pcb_r14; unsigned pcb_r15; unsigned pcb_r16; unsigned pcb_r17; unsigned pcb_r18; unsigned pcb_r19; unsigned pcb_r20; unsigned pcb_r21; unsigned pcb_r22; unsigned pcb_r23; unsigned pcb_r24; unsigned pcb_r25; unsigned pcb_r26; unsigned pcb_r27; unsigned pcb_r28; unsigned pcb_r29; unsigned pcb_r30; unsigned pcb_sp; /* kernel stack pointer */ /* floating-point state */ unsigned pcb_fcr62; unsigned pcb_fcr63; }; struct trapframe { struct reg tf_regs; register_t tf_vector; /* exception vector number */ register_t tf_mask; /* interrupt mask level */ register_t tf_mode; /* interrupt mode */ register_t tf_scratch1; /* reserved for use by locore */ register_t tf_ipfsr; /* P BUS status */ register_t tf_dpfsr; /* P BUS status */ register_t tf_cpu; /* cpu number */ }; #define tf_r tf_regs.r #define tf_sp tf_regs.r[31] #define tf_epsr tf_regs.epsr #define tf_fpsr tf_regs.fpsr #define tf_fpcr tf_regs.fpcr #define tf_sxip tf_regs.sxip #define tf_snip tf_regs.snip #define tf_sfip tf_regs.sfip #define tf_exip tf_regs.sxip #define tf_enip tf_regs.snip #define tf_ssbr tf_regs.ssbr #define tf_dmt0 tf_regs.dmt0 #define tf_dmd0 tf_regs.dmd0 #define tf_dma0 tf_regs.dma0 #define tf_dmt1 tf_regs.dmt1 #define tf_dmd1 tf_regs.dmd1 #define tf_dma1 tf_regs.dma1 #define tf_dmt2 tf_regs.dmt2 #define tf_dmd2 tf_regs.dmd2 #define tf_dma2 tf_regs.dma2 #define tf_duap tf_regs.ssbr #define tf_dsr tf_regs.dmt0 #define tf_dlar tf_regs.dmd0 #define tf_dpar tf_regs.dma0 #define tf_isr tf_regs.dmt1 #define tf_ilar tf_regs.dmd1 #define tf_ipar tf_regs.dma1 #define tf_isap tf_regs.dmt2 #define tf_dsap tf_regs.dmd2 #define tf_iuap tf_regs.dma2 #define tf_fpecr tf_regs.fpecr #define tf_fphs1 tf_regs.fphs1 #define tf_fpls1 tf_regs.fpls1 #define tf_fphs2 tf_regs.fphs2 #define tf_fpls2 tf_regs.fpls2 #define tf_fppt tf_regs.fppt #define tf_fprh tf_regs.fprh #define tf_fprl tf_regs.fprl #define tf_fpit tf_regs.fpit struct pcb { struct m88100_pcb kernel_state; struct trapframe user_state; int pcb_onfault; }; /* * Location of saved user registers for the proc. */ #define USER_REGS(p) \ (((struct reg *)(&((p)->p_addr->u_pcb.user_state)))) /* * The pcb is augmented with machine-dependent additional data for * core dumps. Note that the trapframe here is a copy of the one * from the top of the kernel stack (included here so that the kernel * stack itself need not be dumped). */ struct md_coredump { struct trapframe md_tf; }; #endif /* _M88K_PCB_H_ */