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/* Copyright (C) 1998, Cygnus Solutions
*/
#include "sim-main.h"
#include "sky-device.h"
#include "sky-vu.h"
#include "sky-vu0.h"
VectorUnitState vu0_state;
/* these are aligned versions of zalloc() pointers - do not zfree()! */
static char* vu0_mem0_buffer = 0;
static char* vu0_mem1_buffer = 0;
void
vu0_issue(void)
{
}
static int
vu0_io_read_buffer(device *me,
void *dest,
int space,
address_word addr,
unsigned nr_bytes,
sim_cpu *processor,
sim_cia cia)
{
if (addr < VU0_REGISTER_WINDOW_START)
return 0;
addr -= VU0_REGISTER_WINDOW_START;
/* Adjust nr_bytes if too big */
if ((addr + nr_bytes) > VU_REG_END)
nr_bytes -= addr + nr_bytes - VU_REG_END;
return read_vu_registers (&vu0_state, addr, nr_bytes, dest);
}
static int
vu0_io_write_buffer(device *me,
const void *source,
int space,
address_word addr,
unsigned nr_bytes,
sim_cpu *processor,
sim_cia cia)
{
if (addr < VU0_REGISTER_WINDOW_START)
return 0;
addr -= VU0_REGISTER_WINDOW_START;
/* Adjust nr_bytes if too big */
if ((addr + nr_bytes) > VU_REG_END)
nr_bytes -= addr + nr_bytes - VU_REG_END;
return write_vu_registers (&vu0_state, addr, nr_bytes, source);
}
device vu0_device =
{
"vu0",
&vu0_io_read_buffer,
&vu0_io_write_buffer
};
void
vu0_attach(SIM_DESC sd)
{
sim_core_attach (sd,
NULL,
0 /*level*/,
access_read_write,
0 /*space ???*/,
VU0_REGISTER_WINDOW_START,
VU_REG_END /*nr_bytes*/,
0 /*modulo*/,
&vu0_device,
NULL /*buffer*/);
vu0_mem0_buffer = zalloc(VU0_MEM0_SIZE);
vu0_mem0_buffer = (void*) ALIGN_16((unsigned)vu0_mem0_buffer);
sim_core_attach (sd,
NULL,
0 /*level*/,
access_read_write,
0 /*space ???*/,
VU0_MEM0_WINDOW_START,
VU0_MEM0_SIZE /*nr_bytes*/,
0 /*modulo*/,
0 /*device*/,
vu0_mem0_buffer /*buffer*/);
vu0_mem1_buffer = zalloc(VU0_MEM1_SIZE);
vu0_mem1_buffer = (void*) ALIGN_16((unsigned)vu0_mem1_buffer);
sim_core_attach (sd,
NULL,
0 /*level*/,
access_read_write,
0 /*space ???*/,
VU0_MEM1_WINDOW_START,
VU0_MEM1_SIZE /*nr_bytes*/,
0 /*modulo*/,
0 /*device*/,
vu0_mem1_buffer /*buffer*/);
}
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