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/*
* Copyright 1996 The Australian National University.
* Copyright 1996 Fujitsu Laboratories Limited
*
* This software may be distributed under the terms of the Gnu
* Public License version 2 or later
*/
/* routines to support remote kgdb to Linux/AP+ cells */
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/malloc.h>
#include <asm/ap1000/apservice.h>
#include <asm/ap1000/apreg.h>
static char out_buf[0x100];
static int out_buf_pos = 0;
static char in_buf[0x100];
static int in_buf_pos = 0;
static int in_buf_count = 0;
static int hash_pos = -1;
void ap_dbg_flush(void)
{
struct cap_request req;
if (out_buf_pos == 0) return;
req.cid = mpp_cid();
req.type = REQ_PUTDEBUGSTRING;
req.size = sizeof(req) + out_buf_pos;
req.header = MAKE_HEADER(HOST_CID);
write_bif_polled((char *)&req,sizeof(req),(char *)out_buf,out_buf_pos);
out_buf_pos = 0;
hash_pos = -1;
}
/* called by the gdb stuff */
void putDebugChar(char c)
{
if (c == '#') hash_pos = out_buf_pos;
out_buf[out_buf_pos++] = c;
if (out_buf_pos == sizeof(out_buf)) {
ap_dbg_flush();
}
}
/* used by gdb to get input */
char getDebugChar(void)
{
unsigned flags;
struct cap_request req;
ap_dbg_flush();
if (in_buf_count == 0) {
req.cid = mpp_cid();
req.type = REQ_GETDEBUGCHAR;
req.size = sizeof(req);
req.header = MAKE_HEADER(HOST_CID);
save_flags(flags); cli();
write_bif_polled((char *)&req,sizeof(req),NULL,0);
ap_wait_request(&req,REQ_GETDEBUGCHAR);
read_bif(in_buf,req.size - sizeof(req));
in_buf_pos = 0;
in_buf_count = req.size - sizeof(req);
restore_flags(flags);
}
in_buf_count--;
return(in_buf[in_buf_pos++]);
}
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