+ * from: Utah $Hdr: cpu.h 1.16 91/03/25$
+ *
+ * @(#)cpu.h 8.5 (Berkeley) 5/17/95
+ */
+
+/*
+ * Exported definitions unique to hp300/68k cpu support.
+ */
+
+/*
+ * definitions of cpu-dependent requirements
+ * referenced in generic code
+ */
+#define COPY_SIGCODE /* copy sigcode above user stack in exec */
+
+#define cpu_exec(p) /* nothing */
+#define cpu_swapin(p) /* nothing */
+#define cpu_wait(p) /* nothing */
+#define cpu_setstack(p, ap) (p)->p_md.md_regs[SP] = ap
+#define cpu_set_init_frame(p, fp) (p)->p_md.md_regs = fp
+#define BACKTRACE(p) backtrace(p)
+
+/*
+ * Arguments to hardclock and gatherstats encapsulate the previous
+ * machine state in an opaque clockframe. One the hp300, we use
+ * what the hardware pushes on an interrupt (frame format 0).
+ */
+struct clockframe {
+ u_short sr; /* sr at time of interrupt */
+ u_long pc; /* pc at time of interrupt */
+ u_short vo; /* vector offset (4-word frame) */
+};
+
+#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0)
+#define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0)
+#define CLKF_PC(framep) ((framep)->pc)
+#if 0
+/* We would like to do it this way... */
+#define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0)
+#else
+/* but until we start using PSL_M, we have to do this instead */
+#define CLKF_INTR(framep) (0) /* XXX */
+#endif
+
+
+/*
+ * Preempt the current process if in interrupt from user mode,
+ * or after the current trap/syscall if in system mode.
+ */
+#define need_resched() { want_resched++; aston(); }
+
+/*
+ * Give a profiling tick to the current process when the user profiling
+ * buffer pages are invalid. On the hp300, request an ast to send us
+ * through trap, marking the proc as needing a profiling tick.
+ */
+#define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); }
+
+/*
+ * Notify the current process (p) that it has a signal pending,
+ * process as soon as possible.
+ */
+#define signotify(p) aston()
+
+#define aston() (astpending++)
+
+int astpending; /* need to trap before returning to user mode */
+int want_resched; /* resched() was called */
+
+
+/*
+ * simulated software interrupt register
+ */
+extern unsigned char ssir;
+
+#define SIR_NET 0x1
+#define SIR_CLOCK 0x2
+
+#define siroff(x) ssir &= ~(x)
+#define setsoftnet() ssir |= SIR_NET
+#define setsoftclock() ssir |= SIR_CLOCK
+
+/*
+ * CTL_MACHDEP definitions.
+ */
+#define CPU_CONSDEV 1 /* dev_t: console terminal device */
+#define CPU_MAXID 2 /* number of valid machdep ids */
+
+#define CTL_MACHDEP_NAMES { \
+ { 0, 0 }, \
+ { "console_device", CTLTYPE_STRUCT }, \
+}
+
+/*
+ * The rest of this should probably be moved to ../hp300/hp300cpu.h,
+ * although some of it could probably be put into generic 68k headers.
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