X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=dcpu16.h;h=94e70a3fc02cf901c064ab622ecb2a57a561553e;hb=5ee7307cad8c222933e144787cb8b265646878df;hp=f2bf787b52a589525961ec69fd75cdf03bc1c565;hpb=0a1b4588f79e3719af9431a98da44350030df754;p=dcpu16

diff --git a/dcpu16.h b/dcpu16.h
index f2bf787..94e70a3 100644
--- a/dcpu16.h
+++ b/dcpu16.h
@@ -40,6 +40,7 @@ struct dcpu16 {
     size_t hw_table_entries_;           /* hardware list maintenance */
     size_t hw_table_allocated_;         /* hardware list maintenance */
 
+    unsigned long long cycle_;          /* number of cycles this core has executed */
     unsigned int skip_ : 1;             /* skip execution of next instruction */
     unsigned int interrupts_deferred_ : 1; /* queue software interrupts */
     unsigned int on_fire_ : 1;          /* cpu is on fire */
@@ -48,7 +49,6 @@ struct dcpu16 {
     size_t interrupts_head_;            /* interrupt queue maintenance */
     size_t interrupts_tail_;            /* interrupt queue maintenance */
 
-    unsigned long long cycle;           /* number of cycles this core has executed */
     DCPU16_WORD reg[DCPU16_REG__NUM];   /* system registers, a b c x y z i j */
     DCPU16_WORD ram[DCPU16_RAM];        /* memory */
 };
@@ -59,19 +59,39 @@ typedef void (dcpu16_ev_cb_t)(struct dcpu16 *, dcpu16_acct_event, DCPU16_WORD, v
 #define DCPU16_ACCT_EV_CYCLE    (1<<1)
 #define DCPU16_ACCT_EV_READ     (1<<2)
 #define DCPU16_ACCT_EV_WRITE    (1<<3)
-#define DCPU16_ACCT_EV_NOP      (1<<4)
-#define DCPU16_ACCT_EV_RESET    (1<<5)
+#define DCPU16_ACCT_EV_REG_READ (1<<4)
+#define DCPU16_ACCT_EV_REG_WRITE (1<<5)
+#define DCPU16_ACCT_EV_NOP      (1<<6)
+#define DCPU16_ACCT_EV_RESET    (1<<7)
 struct dcpu16_acct_cb {
-    dcpu16_ev_cb_t *fn;
-    void *data;
-    dcpu16_acct_event mask;
+    dcpu16_ev_cb_t *fn; /* call this */
+    void *data;         /* also mention this */
+    dcpu16_acct_event mask; /* when (mask & event) is true and */
+    DCPU16_WORD addr_l, /* addr is this or higher and */
+                addr_h; /* addr is this or lower */
 };
 
-typedef void (dcpu16_hw_signal_t)(struct dcpu16 *, void *);
-/* these are used to define hardware attached to the system */
+typedef void (dcpu16_hw_signal_t)(struct dcpu16 *, struct dcpu16_hw *);
+/* this structure defines a specific instance of this type of 'hardware' */
 struct dcpu16_hw {
-    struct dcpu16 *vm;  /* which system do I belong to */
-    char *name_;
+    struct dcpu16 *vm;              /* which system do I belong to */
+    struct dcpu16_hw_module *mod;   /* whence I came */
+    void *data;                     /* per-instance data */
+};
+
+/* human-readable text describing hw module control operations, for convenience's sake */
+struct dcpu16_hw_ctl_cmd {
+    char *command;
+    char *data_in_type;
+    char *data_out_type;
+    char *description;
+};
+
+typedef int (dcpu16_hw_data_init_t)(struct dcpu16_hw *, void *);
+typedef void (dcpu16_hw_data_free_t)(struct dcpu16_hw *);
+typedef int (dcpu16_hw_ctl_t)(struct dcpu16_hw *, const char *, void *, void *);
+struct dcpu16_hw_module {
+    char *name_;                /* dymo label on front panel */
 
     DCPU16_WORD id_l;
     DCPU16_WORD id_h;
@@ -79,10 +99,14 @@ struct dcpu16_hw {
     DCPU16_WORD mfg_l;
     DCPU16_WORD mfg_h;
 
-    dcpu16_hw_signal_t *hwi;
-    dcpu16_hw_signal_t *cycle;
-    dcpu16_hw_signal_t *reset;
-    void *data;
+    dcpu16_hw_signal_t *hwi;    /* hardware interrupt handler */
+    dcpu16_hw_signal_t *cycle;  /* cycle tick handler */
+    dcpu16_hw_signal_t *reset;  /* reset handler */
+
+    dcpu16_hw_data_init_t *data_init;   /* how to allocate a dcpu16_hw instance's data */
+    dcpu16_hw_data_free_t *data_free;
+    dcpu16_hw_ctl_t *ctl;
+    struct dcpu16_hw_ctl_cmd *ctl_cmd;
 };
 
 /* instantiate a new core */
@@ -91,23 +115,24 @@ struct dcpu16 *dcpu16_new(void);
 /* reset a core to initial state */
 void dcpu16_reset(struct dcpu16 *);
 
-/* print the current state of a core */
-void dcpu16_state_print(struct dcpu16 *);
-
-/* print the contents of ram from second to third argument */
-void dcpu16_dump_ram(struct dcpu16 *, DCPU16_WORD, DCPU16_WORD);
-
 /* print words in buf as asm */
 DCPU16_WORD dcpu16_mnemonify_buf(DCPU16_WORD *);
 
 /* print the instruction at the specified address, returns number of words consumed in decoding */
 DCPU16_WORD dcpu16_disassemble_print(struct dcpu16 *, DCPU16_WORD);
 
+/* create and delete 'hardware' objects */
+struct dcpu16_hw *dcpu16_hw_new(struct dcpu16 *, struct dcpu16_hw_module *, void *);
+void dcpu16_hw_del(struct dcpu16_hw **);
+
+/* set options on hardware objects */
+int dcpu16_hw_ctl(struct dcpu16_hw *, const char *, void *, void *);
+
 /* register new 'hardware' device with system */
-int dcpu16_hw_add(struct dcpu16 *, struct dcpu16_hw *);
+int dcpu16_hw_attach(struct dcpu16 *, struct dcpu16_hw *);
 
 /* register a callback for an accounting event */
-int dcpu16_acct_add(struct dcpu16 *, dcpu16_acct_event, dcpu16_ev_cb_t *, void *);
+int dcpu16_acct_add(struct dcpu16 *, dcpu16_acct_event, dcpu16_ev_cb_t *, DCPU16_WORD, DCPU16_WORD, void *);
 
 /* execute the next instruction */
 void dcpu16_step(struct dcpu16 *);
@@ -115,8 +140,12 @@ void dcpu16_step(struct dcpu16 *);
 /* release a core */
 void dcpu16_delete(struct dcpu16 **);
 
+/* signal hardware interrupt */
 int dcpu16_interrupt(struct dcpu16 *, DCPU16_WORD);
 
+/* consume a cycle */
+void dcpu16_cycle_inc(struct dcpu16 *, unsigned int);
+
 /* register callbacks to handle warning and debug messages, default is writing to stderr, may be set to null */
 void dcpu16_warn_cb_set(void (*)(char *, ...));
 void dcpu16_trace_cb_set(void (*)(char *, ...));