mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2025-01-12 12:16:04 +08:00
1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
143 lines
3.4 KiB
C
143 lines
3.4 KiB
C
/* UART model.
|
|
|
|
Copyright (C) 1996-2024 Free Software Foundation, Inc.
|
|
Contributed by Cygnus Solutions and Mike Frysinger.
|
|
|
|
This file is part of simulators.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
/* This must come before any other includes. */
|
|
#include "defs.h"
|
|
|
|
#include "sim-main.h"
|
|
#include "hw-main.h"
|
|
|
|
#include "dv-sockser.h"
|
|
#include "dv-m32r_uart.h"
|
|
|
|
struct m32r_uart
|
|
{
|
|
};
|
|
|
|
static unsigned
|
|
m32r_uart_io_write_buffer (struct hw *me, const void *source,
|
|
int space, address_word addr, unsigned nr_bytes)
|
|
{
|
|
SIM_DESC sd = hw_system (me);
|
|
int status = dv_sockser_status (sd);
|
|
|
|
switch (addr)
|
|
{
|
|
case UART_OUTCHAR_ADDR:
|
|
if (status & DV_SOCKSER_DISCONNECTED)
|
|
{
|
|
sim_io_write_stdout (sd, source, nr_bytes);
|
|
sim_io_flush_stdout (sd);
|
|
}
|
|
else
|
|
{
|
|
/* Normalize errors to a value of 0. */
|
|
int ret = dv_sockser_write_buffer (sd, source, nr_bytes);
|
|
if (ret < 0)
|
|
nr_bytes = 0;
|
|
}
|
|
break;
|
|
}
|
|
|
|
return nr_bytes;
|
|
}
|
|
|
|
static unsigned
|
|
m32r_uart_io_read_buffer (struct hw *me, void *dest,
|
|
int space, address_word addr, unsigned nr_bytes)
|
|
{
|
|
SIM_DESC sd = hw_system (me);
|
|
int status = dv_sockser_status (sd);
|
|
|
|
switch (addr)
|
|
{
|
|
case UART_INCHAR_ADDR:
|
|
if (status & DV_SOCKSER_DISCONNECTED)
|
|
{
|
|
int ret = sim_io_poll_read (sd, 0/*STDIN*/, dest, 1);
|
|
return (ret < 0) ? 0 : 1;
|
|
}
|
|
else
|
|
{
|
|
char *buffer = dest;
|
|
buffer[0] = dv_sockser_read (sd);
|
|
return 1;
|
|
}
|
|
case UART_STATUS_ADDR:
|
|
{
|
|
unsigned char *p = dest;
|
|
p[0] = 0;
|
|
p[1] = (((status & DV_SOCKSER_INPUT_EMPTY)
|
|
#ifdef UART_INPUT_READY0
|
|
? UART_INPUT_READY : 0)
|
|
#else
|
|
? 0 : UART_INPUT_READY)
|
|
#endif
|
|
+ ((status & DV_SOCKSER_OUTPUT_EMPTY) ? UART_OUTPUT_READY : 0));
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
return nr_bytes;
|
|
}
|
|
|
|
static void
|
|
attach_m32r_uart_regs (struct hw *me, struct m32r_uart *uart)
|
|
{
|
|
address_word attach_address;
|
|
int attach_space;
|
|
unsigned attach_size;
|
|
reg_property_spec reg;
|
|
|
|
if (hw_find_property (me, "reg") == NULL)
|
|
hw_abort (me, "Missing \"reg\" property");
|
|
|
|
if (!hw_find_reg_array_property (me, "reg", 0, ®))
|
|
hw_abort (me, "\"reg\" property must contain three addr/size entries");
|
|
|
|
hw_unit_address_to_attach_address (hw_parent (me),
|
|
®.address,
|
|
&attach_space, &attach_address, me);
|
|
hw_unit_size_to_attach_size (hw_parent (me), ®.size, &attach_size, me);
|
|
|
|
hw_attach_address (hw_parent (me),
|
|
0, attach_space, attach_address, attach_size, me);
|
|
}
|
|
|
|
static void
|
|
m32r_uart_finish (struct hw *me)
|
|
{
|
|
struct m32r_uart *uart;
|
|
|
|
uart = HW_ZALLOC (me, struct m32r_uart);
|
|
|
|
set_hw_data (me, uart);
|
|
set_hw_io_read_buffer (me, m32r_uart_io_read_buffer);
|
|
set_hw_io_write_buffer (me, m32r_uart_io_write_buffer);
|
|
|
|
attach_m32r_uart_regs (me, uart);
|
|
}
|
|
|
|
const struct hw_descriptor dv_m32r_uart_descriptor[] =
|
|
{
|
|
{"m32r_uart", m32r_uart_finish,},
|
|
{NULL, NULL},
|
|
};
|