Merge pull request #45 from georgemoralis/libc_HLE_implementations

HLE printf and refactoring to some libc functions
This commit is contained in:
georgemoralis 2023-10-06 16:11:10 +03:00 committed by GitHub
commit 830542e870
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 922 additions and 92 deletions

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@ -55,7 +55,7 @@ add_executable(shadps4
src/Core/PS4/HLE/Kernel/cpu_management.cpp src/Core/PS4/HLE/Kernel/cpu_management.cpp
src/Core/PS4/HLE/Kernel/cpu_management.h src/Core/PS4/HLE/Kernel/cpu_management.h
"src/Util/Singleton.h" "src/Util/Disassembler.cpp" "src/Util/Disassembler.h" "src/Core/PS4/Util/aerolib.h" "src/Core/PS4/Loader/SymbolsResolver.h" "src/Core/PS4/Loader/SymbolsResolver.cpp" "src/Core/PS4/HLE/Libs.cpp" "src/Core/PS4/HLE/Libs.h" "src/Core/PS4/HLE/LibC.cpp" "src/Core/PS4/HLE/LibC.h" "src/Lib/Timer.cpp" "src/Lib/Timer.h" "src/Core/PS4/HLE/LibKernel.cpp" "src/Core/PS4/HLE/LibKernel.h" "src/Core/PS4/HLE/LibSceGnmDriver.cpp" "src/Core/PS4/HLE/LibSceGnmDriver.h" "src/Core/PS4/HLE/Kernel/ThreadManagement.cpp" "src/Core/PS4/HLE/Kernel/ThreadManagement.h" "src/Core/PS4/HLE/ErrorCodes.h" "src/debug.h" "src/Core/PS4/HLE/Kernel/memory_management.cpp" "src/Core/PS4/HLE/Kernel/memory_management.h" "src/Core/PS4/GPU/gpu_memory.cpp" "src/Core/PS4/GPU/gpu_memory.h" "src/emulator.cpp" "src/emulator.h" "src/Core/PS4/HLE/Kernel/Objects/event_queue.h" "src/Core/PS4/HLE/Kernel/Objects/event_queue.cpp" "src/Core/PS4/HLE/Graphics/Objects/video_out_ctx.cpp" "src/Core/PS4/HLE/Graphics/Objects/video_out_ctx.h" "src/Core/PS4/HLE/Graphics/graphics_ctx.h" "src/vulkan_util.cpp" "src/vulkan_util.h" "src/Core/PS4/GPU/video_out_buffer.cpp" "src/Core/PS4/GPU/video_out_buffer.h" "src/Core/PS4/HLE/Graphics/graphics_render.cpp" "src/Core/PS4/HLE/Graphics/graphics_render.h" "src/Core/PS4/GPU/tile_manager.cpp" "src/Core/PS4/GPU/tile_manager.h" "src/version.h") "src/Util/Singleton.h" "src/Util/Disassembler.cpp" "src/Util/Disassembler.h" "src/Core/PS4/Util/aerolib.h" "src/Core/PS4/Loader/SymbolsResolver.h" "src/Core/PS4/Loader/SymbolsResolver.cpp" "src/Core/PS4/HLE/Libs.cpp" "src/Core/PS4/HLE/Libs.h" "src/Core/PS4/HLE/LibC.cpp" "src/Core/PS4/HLE/LibC.h" "src/Lib/Timer.cpp" "src/Lib/Timer.h" "src/Core/PS4/HLE/LibKernel.cpp" "src/Core/PS4/HLE/LibKernel.h" "src/Core/PS4/HLE/LibSceGnmDriver.cpp" "src/Core/PS4/HLE/LibSceGnmDriver.h" "src/Core/PS4/HLE/Kernel/ThreadManagement.cpp" "src/Core/PS4/HLE/Kernel/ThreadManagement.h" "src/Core/PS4/HLE/ErrorCodes.h" "src/debug.h" "src/Core/PS4/HLE/Kernel/memory_management.cpp" "src/Core/PS4/HLE/Kernel/memory_management.h" "src/Core/PS4/GPU/gpu_memory.cpp" "src/Core/PS4/GPU/gpu_memory.h" "src/emulator.cpp" "src/emulator.h" "src/Core/PS4/HLE/Kernel/Objects/event_queue.h" "src/Core/PS4/HLE/Kernel/Objects/event_queue.cpp" "src/Core/PS4/HLE/Graphics/Objects/video_out_ctx.cpp" "src/Core/PS4/HLE/Graphics/Objects/video_out_ctx.h" "src/Core/PS4/HLE/Graphics/graphics_ctx.h" "src/vulkan_util.cpp" "src/vulkan_util.h" "src/Core/PS4/GPU/video_out_buffer.cpp" "src/Core/PS4/GPU/video_out_buffer.h" "src/Core/PS4/HLE/Graphics/graphics_render.cpp" "src/Core/PS4/HLE/Graphics/graphics_render.h" "src/Core/PS4/GPU/tile_manager.cpp" "src/Core/PS4/GPU/tile_manager.h" "src/version.h" "src/Emulator/HLE/Libraries/LibC/printf.h" "src/Emulator/HLE/Libraries/LibC/va_ctx.h" "src/Emulator/HLE/Libraries/LibC/libc.cpp" "src/Emulator/HLE/Libraries/LibC/libc.h")
find_package(OpenGL REQUIRED) find_package(OpenGL REQUIRED)
target_link_libraries(shadps4 PUBLIC fmt mincore spdlog IMGUI SDL3-shared ${OPENGL_LIBRARY} vulkan-1 spirv-tools-opt spirv-tools) target_link_libraries(shadps4 PUBLIC fmt mincore spdlog IMGUI SDL3-shared ${OPENGL_LIBRARY} vulkan-1 spirv-tools-opt spirv-tools)

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@ -1,35 +1,38 @@
#include "LibC.h" #include "LibC.h"
#include "Libs.h"
#include "../Loader/Elf.h"
#include <debug.h> #include <debug.h>
#include <pthread.h> #include <pthread.h>
#include "../Loader/Elf.h"
#include "Libs.h"
#include "Emulator/HLE/Libraries/LibC/libc.h"
namespace HLE::Libs::LibC { namespace HLE::Libs::LibC {
static u32 g_need_sceLibc = 1; static u32 g_need_sceLibc = 1;
static PS4_SYSV_ABI void init_env() // every game/demo should probably static PS4_SYSV_ABI void init_env() // every game/demo should probably
{ {
//dummy no need atm // dummy no need atm
} }
static pthread_mutex_t __guard_mutex; static pthread_mutex_t __guard_mutex;
static pthread_once_t __once_control = PTHREAD_ONCE_INIT; static pthread_once_t __once_control = PTHREAD_ONCE_INIT;
static void recursiveMutex() static void recursiveMutex() {
{
pthread_mutexattr_t recursiveMutexAttr; pthread_mutexattr_t recursiveMutexAttr;
pthread_mutexattr_init(&recursiveMutexAttr); pthread_mutexattr_init(&recursiveMutexAttr);
pthread_mutexattr_settype(&recursiveMutexAttr, PTHREAD_MUTEX_RECURSIVE); pthread_mutexattr_settype(&recursiveMutexAttr, PTHREAD_MUTEX_RECURSIVE);
pthread_mutex_init(&__guard_mutex, &recursiveMutexAttr); pthread_mutex_init(&__guard_mutex, &recursiveMutexAttr);
} }
static pthread_mutex_t* mutex_quard() { static pthread_mutex_t* mutex_quard() {
pthread_once(&__once_control, &recursiveMutex); pthread_once(&__once_control, &recursiveMutex);
return &__guard_mutex; return &__guard_mutex;
} }
int PS4_SYSV_ABI __cxa_guard_acquire(u64* guard_object) { int PS4_SYSV_ABI __cxa_guard_acquire(u64* guard_object) {
if ((*((uint8_t*)guard_object) != 0)) // low 8 bits checks if its already init if ((*((uint8_t*)guard_object) != 0)) // low 8 bits checks if its already init
{ {
return 0; return 0;
@ -56,55 +59,39 @@ namespace HLE::Libs::LibC {
((uint8_t*)guard_object)[1] = 1; ((uint8_t*)guard_object)[1] = 1;
return 1; return 1;
} }
void PS4_SYSV_ABI __cxa_guard_release(u64* guard_object) void PS4_SYSV_ABI __cxa_guard_release(u64* guard_object) {
{ *((uint8_t*)guard_object) = 1; // mark it as done
*((uint8_t*)guard_object) = 1;//mark it as done
// release global mutex // release global mutex
int result = ::pthread_mutex_unlock(mutex_quard()); int result = ::pthread_mutex_unlock(mutex_quard());
if (result != 0) { if (result != 0) {
BREAKPOINT(); BREAKPOINT();
} }
} }
int PS4_SYSV_ABI memcmp(const void* s1, const void* s2, size_t n) {
return ::memcmp(s1, s2, n);
}
void* PS4_SYSV_ABI memcpy(void* dest, const void* src, size_t n) {
return ::memcpy(dest, src, n);
}
static PS4_SYSV_ABI void catchReturnFromMain(int status) { BREAKPOINT(); static PS4_SYSV_ABI void catchReturnFromMain(int status) {
} // dummy
static PS4_SYSV_ABI void exit(int code) { BREAKPOINT(); }
}
static PS4_SYSV_ABI int atexit(void (*func)())
{
int rt = ::atexit(func);
if (rt != 0)
{
BREAKPOINT();
}
return rt;
}
static PS4_SYSV_ABI void _Assert() { BREAKPOINT(); }
void LibC_Register(SymbolsResolver* sym) static PS4_SYSV_ABI void _Assert() { BREAKPOINT(); }
{
void LibC_Register(SymbolsResolver* sym) {
LIB_FUNCTION("bzQExy189ZI", "libc", 1, "libc", 1, 1, init_env); LIB_FUNCTION("bzQExy189ZI", "libc", 1, "libc", 1, 1, init_env);
LIB_FUNCTION("3GPpjQdAMTw", "libc", 1, "libc", 1, 1, __cxa_guard_acquire); LIB_FUNCTION("3GPpjQdAMTw", "libc", 1, "libc", 1, 1, __cxa_guard_acquire);
LIB_FUNCTION("9rAeANT2tyE", "libc", 1, "libc", 1, 1, __cxa_guard_release); LIB_FUNCTION("9rAeANT2tyE", "libc", 1, "libc", 1, 1, __cxa_guard_release);
LIB_FUNCTION("DfivPArhucg", "libc", 1, "libc", 1, 1, memcmp); LIB_FUNCTION("DfivPArhucg", "libc", 1, "libc", 1, 1, Emulator::HLE::Libraries::LibC::memcmp);
LIB_FUNCTION("Q3VBxCXhUHs", "libc", 1, "libc", 1, 1, memcpy); LIB_FUNCTION("Q3VBxCXhUHs", "libc", 1, "libc", 1, 1, Emulator::HLE::Libraries::LibC::memcpy);
LIB_FUNCTION("XKRegsFpEpk", "libc", 1, "libc", 1, 1, catchReturnFromMain); LIB_FUNCTION("XKRegsFpEpk", "libc", 1, "libc", 1, 1, catchReturnFromMain);
LIB_FUNCTION("uMei1W9uyNo", "libc", 1, "libc", 1, 1, exit); LIB_FUNCTION("uMei1W9uyNo", "libc", 1, "libc", 1, 1, Emulator::HLE::Libraries::LibC::exit);
LIB_FUNCTION("8G2LB+A3rzg", "libc", 1, "libc", 1, 1, atexit); LIB_FUNCTION("8G2LB+A3rzg", "libc", 1, "libc", 1, 1, Emulator::HLE::Libraries::LibC::atexit);
LIB_FUNCTION("-QgqOT5u2Vk", "libc", 1, "libc", 1, 1, _Assert); LIB_FUNCTION("-QgqOT5u2Vk", "libc", 1, "libc", 1, 1, _Assert);
LIB_FUNCTION("hcuQgD53UxM", "libc", 1, "libc", 1, 1, Emulator::HLE::Libraries::LibC::printf);
LIB_OBJ("P330P3dFF68", "libc", 1, "libc", 1, 1, &HLE::Libs::LibC::g_need_sceLibc); LIB_OBJ("P330P3dFF68", "libc", 1, "libc", 1, 1, &HLE::Libs::LibC::g_need_sceLibc);
} }
}; }; // namespace HLE::Libs::LibC

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@ -7,12 +7,9 @@ namespace HLE::Libs::LibC {
//functions //functions
static PS4_SYSV_ABI void init_env(); static PS4_SYSV_ABI void init_env();
static PS4_SYSV_ABI void exit(int code);
static PS4_SYSV_ABI void _Assert(); static PS4_SYSV_ABI void _Assert();
static PS4_SYSV_ABI void catchReturnFromMain(int status); static PS4_SYSV_ABI void catchReturnFromMain(int status);
int PS4_SYSV_ABI __cxa_guard_acquire(u64* guard_object); int PS4_SYSV_ABI __cxa_guard_acquire(u64* guard_object);
void PS4_SYSV_ABI __cxa_guard_release(u64* guard_object); void PS4_SYSV_ABI __cxa_guard_release(u64* guard_object);
int PS4_SYSV_ABI memcmp(const void* s1, const void* s2, size_t n);
void* PS4_SYSV_ABI memcpy(void* dest, const void* src, size_t n);
}; };

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@ -0,0 +1,29 @@
#include "libc.h"
#include <debug.h>
#include <cstdlib>
#include <cstring>
namespace Emulator::HLE::Libraries::LibC {
PS4_SYSV_ABI int printf(VA_ARGS) {
VA_CTX(ctx);
return printf_ctx(&ctx);
}
PS4_SYSV_ABI void exit(int code) { std::exit(code); }
PS4_SYSV_ABI int atexit(void (*func)()) {
int rt = std::atexit(func);
if (rt != 0) {
BREAKPOINT();
}
return rt;
}
int PS4_SYSV_ABI memcmp(const void* s1, const void* s2, size_t n) { return std::memcmp(s1, s2, n); }
void* PS4_SYSV_ABI memcpy(void* dest, const void* src, size_t n) { return std::memcpy(dest, src, n); }
}; // namespace Emulator::HLE::Libraries::LibC

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@ -0,0 +1,15 @@
#pragma once
#include <types.h>
#include "printf.h"
namespace Emulator::HLE::Libraries::LibC {
// HLE functions
PS4_SYSV_ABI int printf(VA_ARGS);
PS4_SYSV_ABI void exit(int code);
PS4_SYSV_ABI int atexit(void (*func)());
int PS4_SYSV_ABI memcmp(const void* s1, const void* s2, size_t n);
void* PS4_SYSV_ABI memcpy(void* dest, const void* src, size_t n);
} // namespace Emulator::HLE::Libraries::LibC

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@ -0,0 +1,696 @@
///////////////////////////////////////////////////////////////////////////////
// \author (c) Marco Paland (info@paland.com)
// 2014-2018, PALANDesign Hannover, Germany
//
// \license The MIT License (MIT)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
// \brief Tiny printf, sprintf and snprintf implementation, optimized for speed on
// embedded systems with a very limited resources.
// Use this instead of bloated standard/newlib printf.
// These routines are thread safe and reentrant!
//
///////////////////////////////////////////////////////////////////////////////
// Vita3K emulator project
// Copyright (C) 2023 Vita3K team
//
// 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 2 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, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
// copied from Vita3k project at 6/10/2023 (latest update 30/06/2023)
// modifications for adapting va_args parameters
#pragma once
#include <stdio.h>
#include <cstdarg>
#include <cstdbool>
#include <cstddef>
#include <cstdint>
#include "va_ctx.h"
namespace Emulator::HLE::Libraries::LibC {
// ntoa conversion buffer size, this must be big enough to hold
// one converted numeric number including padded zeros (dynamically created on stack)
// 32 byte is a good default
#define PRINTF_NTOA_BUFFER_SIZE 32U
// ftoa conversion buffer size, this must be big enough to hold
// one converted float number including padded zeros (dynamically created on stack)
// 32 byte is a good default
#define PRINTF_FTOA_BUFFER_SIZE 32U
// define this to support floating point (%f)
#define PRINTF_SUPPORT_FLOAT
// define this to support long long types (%llu or %p)
#define PRINTF_SUPPORT_LONG_LONG
// define this to support the ptrdiff_t type (%t)
// ptrdiff_t is normally defined in <stddef.h> as long or long long type
#define PRINTF_SUPPORT_PTRDIFF_T
///////////////////////////////////////////////////////////////////////////////
// internal flag definitions
#define FLAGS_ZEROPAD (1U << 0U)
#define FLAGS_LEFT (1U << 1U)
#define FLAGS_PLUS (1U << 2U)
#define FLAGS_SPACE (1U << 3U)
#define FLAGS_HASH (1U << 4U)
#define FLAGS_UPPERCASE (1U << 5U)
#define FLAGS_CHAR (1U << 6U)
#define FLAGS_SHORT (1U << 7U)
#define FLAGS_LONG (1U << 8U)
#define FLAGS_LONG_LONG (1U << 9U)
#define FLAGS_PRECISION (1U << 10U)
#define FLAGS_WIDTH (1U << 11U)
// output function type
typedef void (*out_fct_type)(char character, void* buffer, size_t idx, size_t maxlen);
// wrapper (used as buffer) for output function type
typedef struct {
void (*fct)(char character, void* arg);
void* arg;
} out_fct_wrap_type;
// internal buffer output
static inline void _out_buffer(char character, void* buffer, size_t idx, size_t maxlen) {
if (idx < maxlen) {
((char*)buffer)[idx] = character;
}
}
// internal null output
static inline void _out_null(char character, void* buffer, size_t idx, size_t maxlen) {
(void)character;
(void)buffer;
(void)idx;
(void)maxlen;
}
// internal output function wrapper
static inline void _out_fct(char character, void* buffer, size_t idx, size_t maxlen) {
(void)idx;
(void)maxlen;
// buffer is the output fct pointer
((out_fct_wrap_type*)buffer)->fct(character, ((out_fct_wrap_type*)buffer)->arg);
}
// internal strlen
// \return The length of the string (excluding the terminating 0)
static inline unsigned int _strlen(const char* str) {
const char* s;
for (s = str; *s; ++s)
;
return (unsigned int)(s - str);
}
// internal test if char is a digit (0-9)
// \return true if char is a digit
static inline bool _is_digit(char ch) { return (ch >= '0') && (ch <= '9'); }
// internal ASCII string to unsigned int conversion
static inline unsigned int _atoi(const char** str) {
unsigned int i = 0U;
while (_is_digit(**str)) {
i = i * 10U + (unsigned int)(*((*str)++) - '0');
}
return i;
}
// internal itoa format
static inline size_t _ntoa_format(out_fct_type out, char* buffer, size_t idx, size_t maxlen, char* buf, size_t len, bool negative, unsigned int base,
unsigned int prec, unsigned int width, unsigned int flags) {
const size_t start_idx = idx;
// pad leading zeros
while (!(flags & FLAGS_LEFT) && (len < prec) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
buf[len++] = '0';
}
while (!(flags & FLAGS_LEFT) && (flags & FLAGS_ZEROPAD) && (len < width) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
buf[len++] = '0';
}
// handle hash
if (flags & FLAGS_HASH) {
if (((len == prec) || (len == width)) && (len > 0U)) {
len--;
if ((base == 16U) && (len > 0U)) {
len--;
}
}
if ((base == 16U) && !(flags & FLAGS_UPPERCASE) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
buf[len++] = 'x';
}
if ((base == 16U) && (flags & FLAGS_UPPERCASE) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
buf[len++] = 'X';
}
if (len < PRINTF_NTOA_BUFFER_SIZE) {
buf[len++] = '0';
}
}
// handle sign
if ((len == width) && (negative || (flags & FLAGS_PLUS) || (flags & FLAGS_SPACE))) {
len--;
}
if (len < PRINTF_NTOA_BUFFER_SIZE) {
if (negative) {
buf[len++] = '-';
} else if (flags & FLAGS_PLUS) {
buf[len++] = '+'; // ignore the space if the '+' exists
} else if (flags & FLAGS_SPACE) {
buf[len++] = ' ';
}
}
// pad spaces up to given width
if (!(flags & FLAGS_LEFT) && !(flags & FLAGS_ZEROPAD)) {
for (size_t i = len; i < width; i++) {
out(' ', buffer, idx++, maxlen);
}
}
// reverse string
for (size_t i = 0U; i < len; i++) {
out(buf[len - i - 1U], buffer, idx++, maxlen);
}
// append pad spaces up to given width
if (flags & FLAGS_LEFT) {
while (idx - start_idx < width) {
out(' ', buffer, idx++, maxlen);
}
}
return idx;
}
// internal itoa for 'long' type
static inline size_t _ntoa_long(out_fct_type out, char* buffer, size_t idx, size_t maxlen, unsigned long value, bool negative, unsigned long base,
unsigned int prec, unsigned int width, unsigned int flags) {
char buf[PRINTF_NTOA_BUFFER_SIZE];
size_t len = 0U;
// write if precision != 0 and value is != 0
if (!(flags & FLAGS_PRECISION) || value) {
do {
const char digit = (char)(value % base);
buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10;
value /= base;
} while (value && (len < PRINTF_NTOA_BUFFER_SIZE));
}
return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative, (unsigned int)base, prec, width, flags);
}
// internal itoa for 'long long' type
#if defined(PRINTF_SUPPORT_LONG_LONG)
static inline size_t _ntoa_long_long(out_fct_type out, char* buffer, size_t idx, size_t maxlen, unsigned long long value, bool negative,
unsigned long long base, unsigned int prec, unsigned int width, unsigned int flags) {
char buf[PRINTF_NTOA_BUFFER_SIZE];
size_t len = 0U;
// write if precision != 0 and value is != 0
if (!(flags & FLAGS_PRECISION) || value) {
do {
const char digit = (char)(value % base);
buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10;
value /= base;
} while (value && (len < PRINTF_NTOA_BUFFER_SIZE));
}
return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative, (unsigned int)base, prec, width, flags);
}
#endif // PRINTF_SUPPORT_LONG_LONG
#if defined(PRINTF_SUPPORT_FLOAT)
static inline size_t _ftoa(out_fct_type out, char* buffer, size_t idx, size_t maxlen, double value, unsigned int prec, unsigned int width,
unsigned int flags) {
char buf[PRINTF_FTOA_BUFFER_SIZE];
size_t len = 0U;
double diff = 0.0;
// if input is larger than thres_max, revert to exponential
const double thres_max = (double)0x7FFFFFFF;
// powers of 10
static const double pow10[] = {1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000};
// test for negative
bool negative = false;
if (value < 0) {
negative = true;
value = 0 - value;
}
// set default precision to 6, if not set explicitly
if (!(flags & FLAGS_PRECISION)) {
prec = 6U;
}
// limit precision to 9, cause a prec >= 10 can lead to overflow errors
while ((len < PRINTF_FTOA_BUFFER_SIZE) && (prec > 9U)) {
buf[len++] = '0';
prec--;
}
int whole = (int)value;
double tmp = (value - whole) * pow10[prec];
unsigned long frac = (unsigned long)tmp;
diff = tmp - frac;
if (diff > 0.5) {
++frac;
// handle rollover, e.g. case 0.99 with prec 1 is 1.0
if (frac >= pow10[prec]) {
frac = 0;
++whole;
}
} else if ((diff == 0.5) && ((frac == 0U) || (frac & 1U))) {
// if halfway, round up if odd, OR if last digit is 0
++frac;
}
// TBD: for very large numbers switch back to native sprintf for exponentials. Anyone want to write code to replace this?
// Normal printf behavior is to print EVERY whole number digit which can be 100s of characters overflowing your buffers == bad
if (value > thres_max) {
return 0U;
}
if (prec == 0U) {
diff = value - (double)whole;
if (diff > 0.5) {
// greater than 0.5, round up, e.g. 1.6 -> 2
++whole;
} else if ((diff == 0.5) && (whole & 1)) {
// exactly 0.5 and ODD, then round up
// 1.5 -> 2, but 2.5 -> 2
++whole;
}
} else {
unsigned int count = prec;
// now do fractional part, as an unsigned number
while (len < PRINTF_FTOA_BUFFER_SIZE) {
--count;
buf[len++] = (char)(48U + (frac % 10U));
if (!(frac /= 10U)) {
break;
}
}
// add extra 0s
while ((len < PRINTF_FTOA_BUFFER_SIZE) && (count-- > 0U)) {
buf[len++] = '0';
}
if (len < PRINTF_FTOA_BUFFER_SIZE) {
// add decimal
buf[len++] = '.';
}
}
// do whole part, number is reversed
while (len < PRINTF_FTOA_BUFFER_SIZE) {
buf[len++] = (char)(48 + (whole % 10));
if (!(whole /= 10)) {
break;
}
}
// pad leading zeros
while (!(flags & FLAGS_LEFT) && (flags & FLAGS_ZEROPAD) && (len < width) && (len < PRINTF_FTOA_BUFFER_SIZE)) {
buf[len++] = '0';
}
// handle sign
if ((len == width) && (negative || (flags & FLAGS_PLUS) || (flags & FLAGS_SPACE))) {
len--;
}
if (len < PRINTF_FTOA_BUFFER_SIZE) {
if (negative) {
buf[len++] = '-';
} else if (flags & FLAGS_PLUS) {
buf[len++] = '+'; // ignore the space if the '+' exists
} else if (flags & FLAGS_SPACE) {
buf[len++] = ' ';
}
}
// pad spaces up to given width
if (!(flags & FLAGS_LEFT) && !(flags & FLAGS_ZEROPAD)) {
for (size_t i = len; i < width; i++) {
out(' ', buffer, idx++, maxlen);
}
}
// reverse string
for (size_t i = 0U; i < len; i++) {
out(buf[len - i - 1U], buffer, idx++, maxlen);
}
// append pad spaces up to given width
if (flags & FLAGS_LEFT) {
while (idx < width) {
out(' ', buffer, idx++, maxlen);
}
}
return idx;
}
#endif // PRINTF_SUPPORT_FLOAT
// internal vsnprintf
static inline int _vsnprintf(out_fct_type out, char* buffer, const char* format, VaList* va_list) {
unsigned int flags, width, precision, n;
size_t idx = 0U;
auto maxlen = static_cast<size_t>(-1);
if (!buffer) {
// use null output function
out = _out_null;
}
while (*format) {
// format specifier? %[flags][width][.precision][length]
if (*format != '%') {
// no
out(*format, buffer, idx++, maxlen);
format++;
continue;
} else {
// yes, evaluate it
format++;
}
// evaluate flags
flags = 0U;
do {
switch (*format) {
case '0':
flags |= FLAGS_ZEROPAD;
format++;
n = 1U;
break;
case '-':
flags |= FLAGS_LEFT;
format++;
n = 1U;
break;
case '+':
flags |= FLAGS_PLUS;
format++;
n = 1U;
break;
case ' ':
flags |= FLAGS_SPACE;
format++;
n = 1U;
break;
case '#':
flags |= FLAGS_HASH;
format++;
n = 1U;
break;
default: n = 0U; break;
}
} while (n);
// evaluate width field
width = 0U;
if (_is_digit(*format)) {
width = _atoi(&format);
} else if (*format == '*') {
const int w = vaArgInteger(va_list); // const int w = va.next<int>(cpu, mem);
if (w < 0) {
flags |= FLAGS_LEFT; // reverse padding
width = (unsigned int)-w;
} else {
width = (unsigned int)w;
}
format++;
}
// evaluate precision field
precision = 0U;
if (*format == '.') {
flags |= FLAGS_PRECISION;
format++;
if (_is_digit(*format)) {
precision = _atoi(&format);
} else if (*format == '*') {
precision = vaArgInteger(va_list); // precision = (unsigned int)va.next<int>(cpu, mem);
format++;
}
}
// evaluate length field
switch (*format) {
case 'l':
flags |= FLAGS_LONG;
format++;
if (*format == 'l') {
flags |= FLAGS_LONG_LONG;
format++;
}
break;
case 'h':
flags |= FLAGS_SHORT;
format++;
if (*format == 'h') {
flags |= FLAGS_CHAR;
format++;
}
break;
#if defined(PRINTF_SUPPORT_PTRDIFF_T)
case 't':
flags |= (sizeof(ptrdiff_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
format++;
break;
#endif
case 'j':
flags |= (sizeof(intmax_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
format++;
break;
case 'z':
flags |= (sizeof(size_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
format++;
break;
default: break;
}
// evaluate specifier
switch (*format) {
case 'd':
case 'i':
case 'u':
case 'x':
case 'X':
case 'o':
case 'b': {
// set the base
unsigned int base;
if (*format == 'x' || *format == 'X') {
base = 16U;
} else if (*format == 'o') {
base = 8U;
} else if (*format == 'b') {
base = 2U;
flags &= ~FLAGS_HASH; // no hash for bin format
} else {
base = 10U;
flags &= ~FLAGS_HASH; // no hash for dec format
}
// uppercase
if (*format == 'X') {
flags |= FLAGS_UPPERCASE;
}
// no plus or space flag for u, x, X, o, b
if ((*format != 'i') && (*format != 'd')) {
flags &= ~(FLAGS_PLUS | FLAGS_SPACE);
}
// convert the integer
if ((*format == 'i') || (*format == 'd')) {
// signed
if (flags & FLAGS_LONG_LONG) {
#if defined(PRINTF_SUPPORT_LONG_LONG)
auto value = vaArgLongLong(va_list); // const long long value = va.next<long long>(cpu, mem);
idx = _ntoa_long_long(out, buffer, idx, maxlen, (unsigned long long)(value > 0 ? value : 0 - value), value < 0, base,
precision, width, flags);
#endif
} else if (flags & FLAGS_LONG) {
auto value = vaArgLong(va_list); // const long value = va.next<long>(cpu, mem);
idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned long)(value > 0 ? value : 0 - value), value < 0, base, precision, width,
flags);
} else {
// const int value = (flags & FLAGS_CHAR) ? (char)va.next<int>(cpu, mem) : (flags & FLAGS_SHORT) ? (short
// int)va.next<int>(cpu, mem): va.next<int>(cpu, mem);
const int value = (flags & FLAGS_CHAR) ? static_cast<char>(vaArgInteger(va_list))
: (flags & FLAGS_SHORT) ? static_cast<int16_t>(vaArgInteger(va_list))
: vaArgInteger(va_list);
idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned int)(value > 0 ? value : 0 - value), value < 0, base, precision, width,
flags);
}
} else {
// unsigned
if (flags & FLAGS_LONG_LONG) {
#if defined(PRINTF_SUPPORT_LONG_LONG)
// idx = _ntoa_long_long(out, buffer, idx, maxlen, va.next<unsigned long long>(cpu, mem), false, base, precision, width,
// flags);
idx =
_ntoa_long_long(out, buffer, idx, maxlen, static_cast<u64>(vaArgLongLong(va_list)), false, base, precision, width, flags);
#endif
} else if (flags & FLAGS_LONG) {
// idx = _ntoa_long(out, buffer, idx, maxlen, va.next<unsigned long>(cpu, mem), false, base, precision, width, flags);
idx = _ntoa_long(out, buffer, idx, maxlen, static_cast<u32>(vaArgLong(va_list)), false, base, precision, width, flags);
} else {
// const unsigned int value = (flags & FLAGS_CHAR) ? (unsigned char)va.next<unsigned int>(cpu, mem) : (flags & FLAGS_SHORT) ?
// (unsigned short int)va.next<unsigned int>(cpu, mem) : va.next<unsigned int>(cpu, mem);
const unsigned int value = (flags & FLAGS_CHAR) ? static_cast<u08>(vaArgInteger(va_list))
: (flags & FLAGS_SHORT) ? static_cast<u16>(vaArgInteger(va_list))
: static_cast<u32>(vaArgInteger(va_list));
idx = _ntoa_long(out, buffer, idx, maxlen, value, false, base, precision, width, flags);
}
}
format++;
break;
}
#if defined(PRINTF_SUPPORT_FLOAT)
case 'f':
case 'F':
// idx = _ftoa(out, buffer, idx, maxlen, va.next<double>(cpu, mem), precision, width, flags);
idx = _ftoa(out, buffer, idx, maxlen, vaArgDouble(va_list), precision, width, flags);
format++;
break;
#endif // PRINTF_SUPPORT_FLOAT
case 'c': {
unsigned int l = 1U;
// pre padding
if (!(flags & FLAGS_LEFT)) {
while (l++ < width) {
out(' ', buffer, idx++, maxlen);
}
}
// char output
// out((char)va.next<int>(cpu, mem), buffer, idx++, maxlen);
out(static_cast<char>(vaArgInteger(va_list)), buffer, idx++, maxlen);
// post padding
if (flags & FLAGS_LEFT) {
while (l++ < width) {
out(' ', buffer, idx++, maxlen);
}
}
format++;
break;
}
case 's': {
const char* p = vaArgPtr<const char>(va_list); // const char *p = va.next<Ptr<char>>(cpu, mem).get(mem);
p = p != nullptr ? p : "(null)";
unsigned int l = _strlen(p);
// pre padding
if (flags & FLAGS_PRECISION) {
l = (l < precision ? l : precision);
}
if (!(flags & FLAGS_LEFT)) {
while (l++ < width) {
out(' ', buffer, idx++, maxlen);
}
}
// string output
while ((*p != 0) && (!(flags & FLAGS_PRECISION) || precision--)) {
out(*(p++), buffer, idx++, maxlen);
}
// post padding
if (flags & FLAGS_LEFT) {
while (l++ < width) {
out(' ', buffer, idx++, maxlen);
}
}
format++;
break;
}
case 'p': {
width = sizeof(void*) * 2U;
flags |= FLAGS_ZEROPAD | FLAGS_UPPERCASE;
#if defined(PRINTF_SUPPORT_LONG_LONG)
const bool is_ll = sizeof(uintptr_t) == sizeof(long long);
if (is_ll) {
// idx = _ntoa_long_long(out, buffer, idx, maxlen, (uintptr_t)va.next<Ptr<void>>(cpu, mem).address(), false, 16U, precision,
// width, flags);
idx = _ntoa_long_long(out, buffer, idx, maxlen, reinterpret_cast<uintptr_t>(vaArgPtr<void>(va_list)), false, 16U, precision,
width, flags);
} else {
#endif
// idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned long)((uintptr_t)va.next<Ptr<void>>(cpu, mem).address()), false, 16U,
// precision, width, flags);
idx = _ntoa_long(out, buffer, idx, maxlen, static_cast<uint32_t>(reinterpret_cast<uintptr_t>(vaArgPtr<void>(va_list))), false,
16U, precision, width, flags);
#if defined(PRINTF_SUPPORT_LONG_LONG)
}
#endif
format++;
break;
}
case '%':
out('%', buffer, idx++, maxlen);
format++;
break;
default:
out(*format, buffer, idx++, maxlen);
format++;
break;
}
}
// termination
out((char)0, buffer, idx < maxlen ? idx : maxlen - 1U, maxlen);
// return written chars without terminating \0
return (int)idx;
}
static int printf_ctx(VaCtx* ctx) {
const char* format = vaArgPtr<const char>(&ctx->va_list);
char buffer[256];
int result = _vsnprintf(_out_buffer, buffer, format, &ctx->va_list);
printf("%s", buffer);
return result;
}
} // namespace Emulator::HLE::Libraries::LibC

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@ -0,0 +1,106 @@
#include <types.h>
#include <xmmintrin.h>
#define VA_ARGS \
uint64_t rdi, uint64_t rsi, uint64_t rdx, uint64_t rcx, uint64_t r8, uint64_t r9, uint64_t overflow_arg_area, __m128 xmm0, __m128 xmm1, \
__m128 xmm2, __m128 xmm3, __m128 xmm4, __m128 xmm5, __m128 xmm6, __m128 xmm7, ...
#define VA_CTX(ctx) \
alignas(16) VaCtx ctx; \
(ctx).reg_save_area.gp[0] = rdi; \
(ctx).reg_save_area.gp[1] = rsi; \
(ctx).reg_save_area.gp[2] = rdx; \
(ctx).reg_save_area.gp[3] = rcx; \
(ctx).reg_save_area.gp[4] = r8; \
(ctx).reg_save_area.gp[5] = r9; \
(ctx).reg_save_area.fp[0] = xmm0; \
(ctx).reg_save_area.fp[1] = xmm1; \
(ctx).reg_save_area.fp[2] = xmm2; \
(ctx).reg_save_area.fp[3] = xmm3; \
(ctx).reg_save_area.fp[4] = xmm4; \
(ctx).reg_save_area.fp[5] = xmm5; \
(ctx).reg_save_area.fp[6] = xmm6; \
(ctx).reg_save_area.fp[7] = xmm7; \
(ctx).va_list.reg_save_area = &(ctx).reg_save_area; \
(ctx).va_list.gp_offset = offsetof(VaRegSave, gp); \
(ctx).va_list.fp_offset = offsetof(VaRegSave, fp); \
(ctx).va_list.overflow_arg_area = &overflow_arg_area;
namespace Emulator::HLE::Libraries::LibC {
// https://stackoverflow.com/questions/4958384/what-is-the-format-of-the-x86-64-va-list-structure
struct VaList {
u32 gp_offset;
u32 fp_offset;
void* overflow_arg_area;
void* reg_save_area;
};
struct VaRegSave {
u64 gp[6];
__m128 fp[8];
};
struct VaCtx {
VaRegSave reg_save_area;
VaList va_list;
};
template <class T, uint32_t Size>
T vaArgRegSaveAreaGp(VaList* l) {
auto* addr = reinterpret_cast<T*>(static_cast<u08*>(l->reg_save_area) + l->gp_offset);
l->gp_offset += Size;
return *addr;
}
template <class T, u64 Align, u64 Size>
T vaArgOverflowArgArea(VaList* l) {
auto ptr = ((reinterpret_cast<u64>(l->overflow_arg_area) + (Align - 1)) & ~(Align - 1));
auto* addr = reinterpret_cast<T*>(ptr);
l->overflow_arg_area = reinterpret_cast<void*>(ptr + Size);
return *addr;
}
template <class T, uint32_t Size>
T vaArgRegSaveAreaFp(VaList* l) {
auto* addr = reinterpret_cast<T*>(static_cast<u08*>(l->reg_save_area) + l->fp_offset);
l->fp_offset += Size;
return *addr;
}
inline int vaArgInteger(VaList* l) {
if (l->gp_offset <= 40) {
return vaArgRegSaveAreaGp<int, 8>(l);
}
return vaArgOverflowArgArea<int, 1, 8>(l);
}
inline long long vaArgLongLong(VaList* l) {
if (l->gp_offset <= 40) {
return vaArgRegSaveAreaGp<long long, 8>(l);
}
return vaArgOverflowArgArea<long long, 1, 8>(l);
}
inline long vaArgLong(VaList* l) {
if (l->gp_offset <= 40) {
return vaArgRegSaveAreaGp<long, 8>(l);
}
return vaArgOverflowArgArea<long, 1, 8>(l);
}
inline double vaArgDouble(VaList* l) {
if (l->fp_offset <= 160) {
return vaArgRegSaveAreaFp<double, 16>(l);
}
return vaArgOverflowArgArea<double, 1, 8>(l);
}
template <class T>
T* vaArgPtr(VaList* l) {
if (l->gp_offset <= 40) {
return vaArgRegSaveAreaGp<T*, 8>(l);
}
return vaArgOverflowArgArea<T*, 1, 8>(l);
}
} // namespace Emulator::HLE::Libraries::LibC