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/*
* HISTORY
* 09-Nov-86 John Seamons (jks) at NeXT
* Ported to NeXT.
*/
#ifndef _M68K_REG_
#define _M68K_REG_
/*
* processor exception frame definitions
*/
/* format codes */
#define EF_NORMAL4 0x0
#define EF_THROWAWAY 0x1
#define EF_NORMAL6 0x2
#define EF_FLOATPT 0x3 /* 040 only */
#define EF_ACCESS 0x7 /* 040 only */
#define EF_COPROC 0x9 /* 030 only */
#define EF_SHORTBUS 0xa /* 030 only */
#define EF_LONGBUS 0xb /* 030 only */
#ifndef ASSEMBLER
struct excp_frame {
short e_sr;
int e_pc;
unsigned short e_format : 4,
e_vector : 12;
};
struct special_status {
unsigned short ss_faultc : 1,
ss_faultb : 1,
ss_rerunc : 1,
ss_rerunb : 1,
: 3,
ss_faultrerund : 1,
ss_rmw : 1,
ss_read : 1,
ss_cyclesize : 2,
: 1,
ss_fcode : 3;
};
#define e_faultc e_ss.ss_faultc
#define e_faultb e_ss.ss_faultb
#define e_rerunc e_ss.ss_rerunc
#define e_rerunb e_ss.ss_rerunb
#define e_faultd e_ss.ss_faultrerund
#define e_rerund e_ss.ss_faultrerund
#define e_rmw e_ss.ss_rmw
#define e_read e_ss.ss_read
#define e_cyclesize e_ss.ss_cyclesize
#define e_fcode e_ss.ss_fcode
#endif
/* bit fields as masks */
#define SS_FAULTC 0x8000
#define SS_FAULTB 0x4000
#define SS_FAULTD 0x0100
#define SS_READ 0x0040
#define SS_FCODE 0x0007
#ifndef ASSEMBLER
struct special_status_040 {
unsigned short ss_cp : 1,
ss_cu : 1,
ss_ct : 1,
ss_cm : 1,
ss_ma : 1,
ss_atc : 1,
ss_lk : 1,
ss_rw : 1,
: 1,
ss_size : 2,
ss_tt : 2,
ss_tm : 3;
};
#define e_cp e_ss.ss_cp
#define e_cu e_ss.ss_cu
#define e_ct e_ss.ss_ct
#define e_cm e_ss.ss_cm
#define e_ma e_ss.ss_ma
#define e_atc e_ss.ss_atc
#define e_lk e_ss.ss_lk
#define e_rw e_ss.ss_rw
#define e_size e_ss.ss_size
#define e_tt e_ss.ss_tt
#define e_tm e_ss.ss_tm
#endif
/* bit fields as masks */
#define SS_CP 0x8000
#define SS_CU 0x4000
#define SS_CT 0x2000
#define SS_CM 0x1000
#define SS_MA 0x0800
#define SS_ATC 0x0400
#define SS_LK 0x0200
#define SS_RW 0x0100
#define SS_SIZE 0x0060
#define SS_TT 0x0018
#define SS_TM 0x0007
#ifndef ASSEMBLER
struct writeback_status {
unsigned short : 8,
wbs_v : 1,
wbs_size : 2,
wbs_tt : 2,
wbs_tm : 3;
};
struct excp_normal6 {
int e_ia;
};
struct excp_coproc {
int e_ia;
short e_internal;
short e_op;
int e_effaddr;
};
struct excp_floatpt {
int e_effaddr;
};
struct excp_access {
int e_effaddr;
struct special_status_040 e_ss;
struct writeback_status e_wb3s, e_wb2s, e_wb1s;
int e_faultaddr;
int e_wb3a, e_wb3d;
int e_wb2a, e_wb2d;
int e_wb1a, e_wb1d_pd0;
int e_pd1, e_pd2, e_pd3;
};
struct excp_shortbus {
short e_internal1;
struct special_status e_ss;
short e_ipipec;
short e_ipipeb;
int e_faultaddr;
short e_internal2[2];
int e_dob;
short e_internal3[2];
};
struct excp_longbus {
short e_internal1;
struct special_status e_ss;
short e_ipipec;
short e_ipipeb;
int e_faultaddr;
short e_internal2[2];
int e_dob;
short e_internal3[4];
int e_stagebaddr;
short e_internal4[2];
int e_dib;
short e_internal5[22];
};
struct regs {
int r_dreg[8];
#define r_d0 r_dreg[0]
int r_areg[8];
#define r_fp r_areg[6]
#define r_sp r_areg[7] /* system sp saved after switch to SR_SUPER */
#if MONITOR
int r_usp; /* user sp */
int r_isp;
int r_msp;
int r_sfc, r_dfc;
int r_vbr;
int r_caar, r_cacr;
int r_crph, r_crpl;
int r_srph, r_srpl;
int r_tc;
int r_tt0, r_tt1;
int r_ts;
#endif
struct excp_frame r_evec;
#define r_sr r_evec.e_sr
#define r_pc r_evec.e_pc
#define r_format r_evec.e_format
#define r_vector r_evec.e_vector
};
/* offset definitions into u.u_ar0 for machine independent code */
#define R0 0
#define R1 1
#define SP 15
#define PS 16
#define PCH 16
#define PCL 17
#endif
#endif
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.