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6df01ab8ab
The defs.h header will take care of including the various config.h headers. For now, it's just config.h, but we'll add more when we integrate gnulib in. This header should be used instead of config.h, and should be the first include in every .c file. We won't rely on the old behavior where we expected files to include the port's sim-main.h which then includes the common sim-basics.h which then includes config.h. We have a ton of code that includes things before sim-main.h, and it sometimes needs to be that way. Creating a dedicated header avoids the ordering mess and implicit inclusion that shows up otherwise.
120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
/* The common simulator framework for GDB, the GNU Debugger.
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Copyright 2002-2021 Free Software Foundation, Inc.
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Contributed by Andrew Cagney and Red Hat.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This must come before any other includes. */
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#include "defs.h"
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#include "sim-main.h"
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#include "hw-main.h"
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/* DEVICE
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core - root of the device tree
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DESCRIPTION
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The core device, positioned at the root of the device tree appears
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to its child devices as a normal device just like every other
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device in the tree.
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Internally it is implemented using a core object. Requests to
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attach (or detach) address spaces are passed to that core object.
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Requests to transfer (DMA) data are reflected back down the device
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tree using the core_map data transfer methods.
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PROPERTIES
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None.
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*/
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static void
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dv_core_attach_address_callback (struct hw *me,
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int level,
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int space,
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address_word addr,
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address_word nr_bytes,
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struct hw *client)
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{
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HW_TRACE ((me, "attach - level=%d, space=%d, addr=0x%lx, nr_bytes=%ld, client=%s",
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level, space, (unsigned long) addr, (unsigned long) nr_bytes, hw_path (client)));
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/* NOTE: At preset the space is assumed to be zero. Perhaphs the
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space should be mapped onto something for instance: space0 -
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unified memory; space1 - IO memory; ... */
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sim_core_attach (hw_system (me),
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NULL, /*cpu*/
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level,
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access_read_write_exec,
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space, addr,
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nr_bytes,
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0, /* modulo */
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client,
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NULL);
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}
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static unsigned
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dv_core_dma_read_buffer_callback (struct hw *me,
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void *dest,
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int space,
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unsigned_word addr,
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unsigned nr_bytes)
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{
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return sim_core_read_buffer (hw_system (me),
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NULL, /*CPU*/
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space, /*???*/
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dest,
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addr,
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nr_bytes);
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}
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static unsigned
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dv_core_dma_write_buffer_callback (struct hw *me,
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const void *source,
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int space,
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unsigned_word addr,
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unsigned nr_bytes,
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int violate_read_only_section)
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{
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return sim_core_write_buffer (hw_system (me),
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NULL, /*cpu*/
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space, /*???*/
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source,
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addr,
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nr_bytes);
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}
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static void
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dv_core_finish (struct hw *me)
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{
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set_hw_attach_address (me, dv_core_attach_address_callback);
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set_hw_dma_write_buffer (me, dv_core_dma_write_buffer_callback);
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set_hw_dma_read_buffer (me, dv_core_dma_read_buffer_callback);
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}
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const struct hw_descriptor dv_core_descriptor[] = {
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{ "core", dv_core_finish, },
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{ NULL, NULL },
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};
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