mirror of
https://github.com/libretro/ppsspp.git
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124 lines
4.6 KiB
C++
124 lines
4.6 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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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, version 2.0 or later versions.
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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 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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// Mersenne Twister random number generator module.
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#define SFMT_MEXP 19937
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#include "ext/sfmt19937/SFMT.h"
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#include "Common/Log.h"
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#include "Core/HLE/HLE.h"
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#include "Core/HLE/FunctionWrappers.h"
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#include "Core/HLE/sceSfmt19937.h"
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static int sceSfmt19937InitGenRand(u32 sfmt, u32 seed) {
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if (!Memory::IsValidAddress(sfmt)) {
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ERROR_LOG(HLE, "sceSfmt19937InitGenRand(sfmt=%08x, seed=%08x) - bad address(es)", sfmt, seed);
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return -1;
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}
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INFO_LOG(HLE, "sceSfmt19937InitGenRand(sfmt=%08x, seed=%08x)", sfmt, seed);
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sfmt_t *psfmt = (sfmt_t *)Memory::GetPointerUnchecked(sfmt);
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sfmt_init_gen_rand(psfmt, seed);
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return 0;
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}
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static int sceSfmt19937InitByArray(u32 sfmt, u32 seeds, int seedslen) {
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if (!Memory::IsValidAddress(sfmt) || !Memory::IsValidAddress(seeds) || !Memory::IsValidAddress(seeds + 4 * (seedslen - 1))) {
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ERROR_LOG(HLE, "sceSfmt19937InitByArray(sfmt=%08x, seeds=%08x, seedslen=%08x) - bad address(es)", sfmt, seeds, seedslen);
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return -1;
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}
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INFO_LOG(HLE, "sceSfmt19937InitByArray(sfmt=%08x, seeds=%08x, seedslen=%08x)", sfmt, seeds, seedslen);
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sfmt_t *psfmt = (sfmt_t *)Memory::GetPointerUnchecked(sfmt);
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uint32_t *pseeds = (uint32_t *)Memory::GetPointerUnchecked(seeds);
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sfmt_init_by_array(psfmt, pseeds, seedslen);
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return 0;
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}
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static u32 sceSfmt19937GenRand32(u32 sfmt) {
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if (!Memory::IsValidAddress(sfmt)) {
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ERROR_LOG(HLE, "sceSfmt19937GenRand32(sfmt=%08x) - bad address(es)", sfmt);
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return -1;
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}
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INFO_LOG(HLE, "sceSfmt19937GenRand32(sfmt=%08x)", sfmt);
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sfmt_t *psfmt = (sfmt_t *)Memory::GetPointerUnchecked(sfmt);
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u32 ret = sfmt_genrand_uint32(psfmt);
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return ret;
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}
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static u64 sceSfmt19937GenRand64(u32 sfmt) {
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if (!Memory::IsValidAddress(sfmt)) {
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ERROR_LOG(HLE, "sceSfmt19937GenRand64(sfmt=%08x) - bad address(es)", sfmt);
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return -1;
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}
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INFO_LOG(HLE, "sceSfmt19937GenRand64(sfmt=%08x)", sfmt);
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sfmt_t *psfmt = (sfmt_t *)Memory::GetPointerUnchecked(sfmt);
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u64 ret = sfmt_genrand_uint64(psfmt);
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return ret;
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}
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static int sceSfmt19937FillArray32(u32 sfmt, u32 array, int arraylen) {
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if (!Memory::IsValidAddress(sfmt) || !Memory::IsValidAddress(array) || !Memory::IsValidAddress(array + 4 * (arraylen - 1))) {
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ERROR_LOG(HLE, "sceSfmt19937FillArray32(sfmt=%08x, ar=%08x, arlen=%08x) - bad address(es)", sfmt, array, arraylen);
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return -1;
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}
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INFO_LOG(HLE, "sceSfmt19937FillArray32(sfmt=%08x, ar=%08x, arlen=%08x)", sfmt, array, arraylen);
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sfmt_t *psfmt = (sfmt_t *)Memory::GetPointerUnchecked(sfmt);
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uint32_t *parray = (uint32_t *)Memory::GetPointerUnchecked(array);
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sfmt_fill_array32(psfmt, parray, arraylen);
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return 0;
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}
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static int sceSfmt19937FillArray64(u32 sfmt, u32 array, int arraylen) {
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if (!Memory::IsValidAddress(sfmt) || !Memory::IsValidAddress(array) || !Memory::IsValidAddress(array + 8 * (arraylen - 1))) {
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ERROR_LOG(HLE, "sceSfmt19937FillArray64(sfmt=%08x, ar=%08x, arlen=%08x) - bad address(es)", sfmt, array, arraylen);
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return -1;
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}
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INFO_LOG(HLE, "sceSfmt19937FillArray64(sfmt=%08x, ar=%08x, arlen=%08x)", sfmt, array, arraylen);
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sfmt_t *psfmt = (sfmt_t *)Memory::GetPointerUnchecked(sfmt);
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uint64_t *parray = (uint64_t *)Memory::GetPointerUnchecked(array);
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sfmt_fill_array64(psfmt, parray, arraylen);
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return 0;
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}
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const HLEFunction sceSfmt19937[] =
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{
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{0X161ACEB2, &WrapI_UU<sceSfmt19937InitGenRand>, "sceSfmt19937InitGenRand", 'i', "xx" },
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{0XDD5A5D6C, &WrapI_UUI<sceSfmt19937InitByArray>, "sceSfmt19937InitByArray", 'i', "xxi"},
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{0XB33FE749, &WrapU_U<sceSfmt19937GenRand32>, "sceSfmt19937GenRand32", 'x', "x" },
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{0XD5AC9F99, &WrapU64_U<sceSfmt19937GenRand64>, "sceSfmt19937GenRand64", 'X', "x" },
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{0XDB025BFA, &WrapI_UUI<sceSfmt19937FillArray32>, "sceSfmt19937FillArray32", 'i', "xxi"},
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{0XEE2938C4, &WrapI_UUI<sceSfmt19937FillArray64>, "sceSfmt19937FillArray64", 'i', "xxi"},
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};
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void Register_sceSfmt19937()
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{
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RegisterModule("sceSfmt19937", ARRAY_SIZE(sceSfmt19937), sceSfmt19937);
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}
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