Add NES emulator

It's now possible to play classic video game roms with teletypewriters.
https://justine.storage.googleapis.com/nesemu.png
This commit is contained in:
Justine Tunney 2020-07-02 13:46:08 -07:00
parent 4918121810
commit 72b654cb6c
28 changed files with 1888 additions and 79 deletions

55
libc/ohmyplus/ohmyplus.mk Normal file
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#-*-mode:makefile-gmake;indent-tabs-mode:t;tab-width:8;coding:utf-8-*-┐
#───vi: set et ft=make ts=8 tw=8 fenc=utf-8 :vi───────────────────────┘
PKGS += LIBC_OHMYPLUS
LIBC_OHMYPLUS_ARTIFACTS += LIBC_OHMYPLUS_A
LIBC_OHMYPLUS = $(LIBC_OHMYPLUS_A_DEPS) $(LIBC_OHMYPLUS_A)
LIBC_OHMYPLUS_A = o/$(MODE)/libc/ohmyplus/ohmyplus.a
LIBC_OHMYPLUS_A_FILES := $(wildcard libc/ohmyplus/*)
LIBC_OHMYPLUS_A_HDRS = $(filter %.h,$(LIBC_OHMYPLUS_A_FILES))
LIBC_OHMYPLUS_A_SRCS_S = $(filter %.S,$(LIBC_OHMYPLUS_A_FILES))
LIBC_OHMYPLUS_A_SRCS_C = $(filter %.c,$(LIBC_OHMYPLUS_A_FILES))
LIBC_OHMYPLUS_A_SRCS_CXX = $(filter %.cc,$(LIBC_OHMYPLUS_A_FILES))
LIBC_OHMYPLUS_A_SRCS = \
$(LIBC_OHMYPLUS_A_SRCS_S) \
$(LIBC_OHMYPLUS_A_SRCS_C) \
$(LIBC_OHMYPLUS_A_SRCS_CXX)
LIBC_OHMYPLUS_A_OBJS = \
$(LIBC_OHMYPLUS_A_SRCS:%=o/$(MODE)/%.zip.o) \
$(LIBC_OHMYPLUS_A_SRCS_S:%.S=o/$(MODE)/%.o) \
$(LIBC_OHMYPLUS_A_SRCS_C:%.c=o/$(MODE)/%.o) \
$(LIBC_OHMYPLUS_A_SRCS_CXX:%.cc=o/$(MODE)/%.o)
LIBC_OHMYPLUS_A_CHECKS = \
$(LIBC_OHMYPLUS_A).pkg \
$(LIBC_OHMYPLUS_A_HDRS:%=o/$(MODE)/%.okk)
LIBC_OHMYPLUS_A_DIRECTDEPS = \
LIBC_BITS \
LIBC_MEM \
LIBC_STUBS
LIBC_OHMYPLUS_A_DEPS := \
$(call uniq,$(foreach x,$(LIBC_OHMYPLUS_A_DIRECTDEPS),$($(x))))
$(LIBC_OHMYPLUS_A): \
libc/ohmyplus/ \
$(LIBC_OHMYPLUS_A).pkg \
$(LIBC_OHMYPLUS_A_OBJS)
$(LIBC_OHMYPLUS_A).pkg: \
$(LIBC_OHMYPLUS_A_OBJS) \
$(foreach x,$(LIBC_OHMYPLUS_A_DIRECTDEPS),$($(x)_A).pkg)
LIBC_OHMYPLUS_LIBS = $(foreach x,$(LIBC_OHMYPLUS_ARTIFACTS),$($(x)))
LIBC_OHMYPLUS_SRCS = $(foreach x,$(LIBC_OHMYPLUS_ARTIFACTS),$($(x)_SRCS))
LIBC_OHMYPLUS_HDRS = $(foreach x,$(LIBC_OHMYPLUS_ARTIFACTS),$($(x)_HDRS))
LIBC_OHMYPLUS_CHECKS = $(foreach x,$(LIBC_OHMYPLUS_ARTIFACTS),$($(x)_CHECKS))
LIBC_OHMYPLUS_OBJS = $(foreach x,$(LIBC_OHMYPLUS_ARTIFACTS),$($(x)_OBJS))
$(LIBC_OHMYPLUS_OBJS): $(BUILD_FILES) libc/ohmyplus/ohmyplus.mk
.PHONY: o/$(MODE)/libc/ohmyplus
o/$(MODE)/libc/ohmyplus: $(LIBC_OHMYPLUS_CHECKS)

28
libc/ohmyplus/vector.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi
Copyright 2020 Justine Alexandra Roberts Tunney
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; version 2 of the License.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#include "libc/bits/bits.h"
#include "libc/mem/mem.h"
void __vector_reserve(size_t n, size_t m, intptr_t **data, size_t *toto) {
if ((n = roundup2pow(n)) > *toto) {
*toto = n;
*data = realloc(*data, n * m);
}
}

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libc/ohmyplus/vector.h Normal file
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/*-*-mode:c++;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8-*-│
vi: set net ft=c++ ts=2 sts=2 sw=2 fenc=utf-8 :vi
Copyright 2020 Justine Alexandra Roberts Tunney
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; version 2 of the License.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
#ifndef COSMOPOLITAN_LIBC_OHMYPLUS_VECTOR_H_
#define COSMOPOLITAN_LIBC_OHMYPLUS_VECTOR_H_
extern "C" {
void __vector_reserve(size_t, size_t, intptr_t **, size_t *);
} /* extern c */
namespace std {
template <class T>
class vector {
public:
vector() : data_(NULL), size_(0), toto_(0) {}
vector(size_t n) : data_(NULL), size_(n), toto_(0) { VectorReserve(n); }
size_t size() const { return size_; }
size_t capacity() const { return toto_; }
T &front() { return data_[0]; }
T &back() { return data_[size_ - 1]; }
void clear() { size_ = 0; }
void reserve(size_t n) { VectorReserve(n); }
void resize(size_t n) { reserve((size_ = n)); }
bool empty() const { return !size_; }
T &operator[](size_t i) { return data_[i]; }
private:
T *data_;
size_t size_;
size_t toto_;
void VectorReserve(size_t n) {
__vector_reserve(n, sizeof(T), (intptr_t **)&data_, &toto_);
}
};
}; /* namespace std */
#endif /* COSMOPOLITAN_LIBC_OHMYPLUS_VECTOR_H_ */