2 * Copyright (c) 1990 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
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32 * from: @(#)reg.h 5.5 (Berkeley) 1/18/91
36 #ifndef _MACHINE_REG_H_
37 #define _MACHINE_REG_H_
40 * Indices for registers in `struct trapframe' and `struct regs'.
42 * This interface is deprecated. In the kernel, it is only used in FPU
43 * emulators to convert from register numbers encoded in instructions to
44 * register values. Everything else just accesses the relevant struct
45 * members. In userland, debuggers tend to abuse this interface since
46 * they don't understand that `struct regs' is a struct. I hope they have
47 * stopped accessing the registers in the trap frame via PT_{READ,WRITE}_U
48 * and we can stop supporting the user area soon.
69 * Indices for registers in `struct regs' only.
71 * Some registers live in the pcb and are only in an "array" with the
72 * other registers in application interfaces that copy all the registers
73 * to or from a `struct regs'.
78 * Register set accessible via /proc/$pid/regs and PT_{SET,GET}REGS.
92 unsigned int r_trapno;
96 unsigned int r_eflags;
103 * Register set accessible via /proc/$pid/fpregs.
107 * XXX should get struct from npx.h. Here we give a slightly
108 * simplified struct. This may be too much detail. Perhaps
109 * an array of unsigned longs is best.
111 unsigned long fpr_env[7];
112 unsigned char fpr_acc[8][10];
113 unsigned long fpr_ex_sw;
114 unsigned char fpr_pad[64];
119 * XXX should get struct from npx.h. Here we give a slightly
120 * simplified struct. This may be too much detail. Perhaps
121 * an array of unsigned longs is best.
123 unsigned long xmm_env[8];
124 unsigned char xmm_acc[8][16];
125 unsigned char xmm_reg[8][16];
126 unsigned char xmm_pad[224];
130 * Register set accessible via /proc/$pid/dbregs.
133 unsigned int dr[8]; /* debug registers */
134 /* Index 0-3: debug address registers */
135 /* Index 4-5: reserved */
136 /* Index 6: debug status */
137 /* Index 7: debug control */
140 #define DBREG_DR7_EXEC 0x00 /* break on execute */
141 #define DBREG_DR7_WRONLY 0x01 /* break on write */
142 #define DBREG_DR7_RDWR 0x03 /* break on read or write */
143 #define DBREG_DRX(d,x) ((d)->dr[(x)]) /* reference dr0 - dr7 by
149 * XXX these interfaces are MI, so they should be declared in a MI place.
151 int fill_regs(struct thread *, struct reg *);
152 int set_regs(struct thread *, struct reg *);
153 int fill_fpregs(struct thread *, struct fpreg *);
154 int set_fpregs(struct thread *, struct fpreg *);
155 int fill_dbregs(struct thread *, struct dbreg *);
156 int set_dbregs(struct thread *, struct dbreg *);
159 #endif /* !_MACHINE_REG_H_ */