- /* to access data, we use the following mapping */
- /* 0x01000000 - 0x0103ffff : instruction memory */
- /* 0x02000000 - 0x0200ffff : data memory */
- /* 0x03000000 - 0x03ffffff : unified memory */
-
- if ( (addr & 0x03000000) == 0x03000000)
- {
- /* UNIFIED MEMORY */
- int segment;
- addr &= ~0x03000000;
- segment = addr >> UMEM_SIZE;
- addr &= 0x1ffff;
- if (!State.umem[segment])
- State.umem[segment] = (uint8 *)calloc(1,1<<UMEM_SIZE);
- if (!State.umem[segment])
+enum
+ {
+ HELD_SPI_IDX = 0,
+ HELD_SPU_IDX = 1
+ };
+
+static unsigned long
+spu_register (void)
+{
+ if (PSW_SM)
+ return GPR (SP_IDX);
+ else
+ return HELD_SP (HELD_SPU_IDX);
+}
+
+static unsigned long
+spi_register (void)
+{
+ if (!PSW_SM)
+ return GPR (SP_IDX);
+ else
+ return HELD_SP (HELD_SPI_IDX);
+}
+
+static void
+set_spi_register (unsigned long value)
+{
+ if (!PSW_SM)
+ SET_GPR (SP_IDX, value);
+ SET_HELD_SP (HELD_SPI_IDX, value);
+}
+
+static void
+set_spu_register (unsigned long value)
+{
+ if (PSW_SM)
+ SET_GPR (SP_IDX, value);
+ SET_HELD_SP (HELD_SPU_IDX, value);
+}
+
+/* Given a virtual address in the DMAP address space, translate it
+ into a physical address. */
+
+unsigned long
+sim_d10v_translate_dmap_addr (unsigned long offset,
+ int nr_bytes,
+ unsigned long *phys,
+ unsigned long (*dmap_register) (int reg_nr))
+{
+ short map;
+ int regno;
+ last_from = "logical-data";
+ if (offset >= DMAP_BLOCK_SIZE * SIM_D10V_NR_DMAP_REGS)
+ {
+ /* Logical address out side of data segments, not supported */
+ return 0;
+ }
+ regno = (offset / DMAP_BLOCK_SIZE);
+ offset = (offset % DMAP_BLOCK_SIZE);
+ if ((offset % DMAP_BLOCK_SIZE) + nr_bytes > DMAP_BLOCK_SIZE)
+ {
+ /* Don't cross a BLOCK boundary */
+ nr_bytes = DMAP_BLOCK_SIZE - (offset % DMAP_BLOCK_SIZE);
+ }
+ map = dmap_register (regno);
+ if (regno == 3)
+ {
+ /* Always maps to data memory */
+ int iospi = (offset / 0x1000) % 4;
+ int iosp = (map >> (4 * (3 - iospi))) % 0x10;
+ last_to = "io-space";
+ *phys = (SIM_D10V_MEMORY_DATA + (iosp * 0x10000) + 0xc000 + offset);
+ }
+ else
+ {
+ int sp = ((map & 0x3000) >> 12);
+ int segno = (map & 0x3ff);
+ switch (sp)