84a71e9a44
Add helpers for instructions that need to interact with QEMU. Also,
add stubs for unimplemented instructions. Instructions SPM and WDR
are left unimplemented because they require emulation of complex
peripherals. The implementation of instruction SLEEP is very limited
due to the lack of peripherals to generate wake interrupts. Memory
access instructions are implemented here because some address ranges
actually refer to CPU registers.
Signed-off-by: Michael Rolnik <mrolnik@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Aleksandar Markovic <aleksandar.m.mail@gmail.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Aleksandar Markovic <aleksandar.m.mail@gmail.com>
Signed-off-by: Thomas Huth <huth@tuxfamily.org>
Message-Id: <20200705140315.260514-10-huth@tuxfamily.org>
[PMD: Replace cpu_physical_memory() API by address_space_ldst()
API to fix running on big-endian host,
reported and suggested by Peter Maydell]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
30 lines
1 KiB
C
30 lines
1 KiB
C
/*
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* QEMU AVR CPU helpers
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*
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* Copyright (c) 2016-2020 Michael Rolnik
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see
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* <http://www.gnu.org/licenses/lgpl-2.1.html>
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*/
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DEF_HELPER_1(wdr, void, env)
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DEF_HELPER_1(debug, void, env)
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DEF_HELPER_1(break, void, env)
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DEF_HELPER_1(sleep, void, env)
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DEF_HELPER_1(unsupported, void, env)
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DEF_HELPER_3(outb, void, env, i32, i32)
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DEF_HELPER_2(inb, tl, env, i32)
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DEF_HELPER_3(fullwr, void, env, i32, i32)
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DEF_HELPER_2(fullrd, tl, env, i32)
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