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main.c
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main.c
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// Copyright 2017 OpenSWE1R Maintainers
// Licensed under GPLv2 or any later version
// Refer to the included LICENSE.txt file.
#include "main.h"
#include "app_version.h"
#include <string.h>
#include <stdio.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <inttypes.h>
#include <assert.h>
#include "common.h"
#include "descriptor.h"
#include "emulation.h"
#include "exe.h"
//FIXME: Alternative for non-posix OS!
#include <time.h>
#include "SDL.h"
static SDL_Window* sdlWindow;
#include <GL/glew.h>
#include "com/d3d.h"
#include "com/ddraw.h"
#include "com/dinput.h"
uint32_t callId = 0;
typedef struct {
const char* name;
void(*callback)(void*, Address, void*);
Address address;
} Export;
unsigned int exportCount = 0;
Export* exports = NULL;
void AddExport(const char* name, void* callback, Address address) {
exports = realloc(exports, (exportCount + 1) * sizeof(Export));
Export* export = &exports[exportCount];
export->name = malloc(strlen(name) + 1);
strcpy((char*)export->name, name);
export->callback = callback;
export->address = 0;
exportCount++;
}
Export* LookupExportByName(const char* name) {
for(unsigned int i = 0; i < exportCount; i++) {
Export* export = &exports[i];
if (!strcmp(export->name, name)) {
return export;
}
}
return NULL;
}
Export* LookupExportByOrdinal(const char* name, uint32_t ordinal) {
if (!strcmp(name, "COMCTL32.dll")) {
if (ordinal == 17) {
return LookupExportByName("InitCommonControls");
}
}
return NULL;
}
// HACK BLOCK!
#if 1
const char** dirlisting = NULL;
Address clearEax = 0;
uint32_t tls[1000] = {0};
//FIXME: To be moved elsewhere
#include "shaders.h"
#include "shader.h"
#include "windows.h" // Hack while exports are not ready
// HACK:
#include <unicorn/unicorn.h>
static void UnknownImport(void* uc, Address address, void* user_data);
Address CreateInterface(const char* name, unsigned int slotCount) {
//FIXME: Unsure about most terminology / inner workings here
Address interfaceAddress = Allocate(1000); //FIXME: Size of object
Address vtableAddress = Allocate(4 * slotCount);
uint32_t* vtable = (uint32_t*)Memory(vtableAddress);
for(unsigned int i = 0; i < slotCount; i++) {
// Point addresses to themself
char* slotName = malloc(128);
sprintf(slotName, "%s__%d", name, i);
Export* export = LookupExportByName(slotName);
Address hltAddress;
if (export != NULL) {
if (export->address == 0) {
hltAddress = CreateHlt();
AddHltHandler(hltAddress, export->callback, (void*)slotName);
export->address = hltAddress;
} else {
hltAddress = export->address;
}
} else {
hltAddress = CreateHlt();
AddHltHandler(hltAddress, UnknownImport, (void*)slotName);
AddExport(slotName, UnknownImport, hltAddress);
}
vtable[i] = hltAddress;
}
// First element in object is pointer to vtable
*(uint32_t*)Memory(interfaceAddress) = vtableAddress;
return interfaceAddress;
}
#endif
Exe* exe; //FIXME: This is hack. I feel this shouldn't be exposed aside from the loader
const char* exeName = "swep1rcr.exe";
static char* TranslatePath(const char* path, bool* is_cd) {
size_t length = strlen(path) + 1;
char* newPath = malloc(length);
char* cursor = strcpy(newPath, path);
while(*cursor != '\0') {
if (*cursor == '\\') {
*cursor = '/';
} else {
*cursor = tolower(*cursor);
}
cursor++;
}
// Check if this is a CD access
if ((length >= 3) && !memcmp(newPath, "d:/", 3)) {
// Normally, the game stores the data in the "/gnome/" folder on the CD.
// All files from that folder will be in the games root folder after
// installation.
//
// However, some games will have a patched CD checked to directly access
// data in the CD root folder.
// This allows to set the "CD Path" to the installation folder of the game
// to run the game without CD.
// The most prominent version doing this is probably the GOG.com re-release
// from 2018.
//
// To support both of these variations, we redirect "/gnome/" to the CD root
// folder on our own. Regardless of what the game does.
// This will do nothing on patched games, but will patch the unpatched one.
// This causes all versions to behave like the patched one.
if ((length >= 9) && !memcmp(newPath, "d:/gnome/", 9)) {
memmove(&newPath[3], &newPath[9], length - 9);
}
// We map the CD root folder back to our game root folder.
memcpy(newPath, "./", 2);
memmove(&newPath[2], &newPath[3], length - 3);
// Mark this as a CD access
if (is_cd != NULL) {
*is_cd = true;
}
} else {
// This is not a CD access, mark it accordingly
if (is_cd != NULL) {
*is_cd = false;
}
}
return newPath;
}
void StackTrace(uint32_t base, unsigned int frames, unsigned int arguments) {
uint32_t stackAddress = base;
for(unsigned int i = 0; i < frames; i++) {
printf("Base: 0x%" PRIX32 "\n", stackAddress);
if (stackAddress == 0) {
// End of stack trace!
return;
}
uint32_t* stack = (uint32_t*)Memory(stackAddress);
// stack[0] = EBP of calling function
// stack[1] = Return address
// stack[2..] = Arguments
if (stack == NULL) {
printf("Corrupt base in trace!\n");
return;
}
printf("#%2d Returns to 0x%" PRIX32 " (", i, stack[1]);
for(unsigned int j = 0; j < arguments; j++) {
printf("@%d=0x%08" PRIX32 ", ", j, stack[j + 2]);
}
printf("...)\n");
// Get the previous ebp
stackAddress = stack[0];
}
}
// FIXME: Move to exe functions
void RelocateSection(Exe* exe, unsigned int sectionIndex) {
// Relocate
//reloc 21589 offset 0 [301d3017] ABSOLUTE
//reloc 21590 offset 11 [301d3028] HIGHLOW
#if 0
switch(relocation->type)
case RelocationAbsolute:
assert(0);
break;
case RelocationHighLow:
assert(0);
break;
default:
assert(0);
break;
}
#endif
}
void LoadSection(Exe* exe, unsigned int sectionIndex) {
PeSection* section = &exe->sections[sectionIndex];
// Map memory for section
uint8_t* mem = (uint8_t*)aligned_malloc(0x1000, section->virtualSize);
// Read data from exe and fill rest of space with zero
fseek(exe->f, section->rawAddress, SEEK_SET);
uint32_t rawSize = section->rawSize;
if (rawSize > section->virtualSize) {
rawSize = section->virtualSize;
}
fread(mem, 1, rawSize, exe->f);
if (rawSize < section->virtualSize) {
memset(&mem[rawSize], 0x00, section->virtualSize - rawSize);
}
// Write back address to the exe object
exe->mappedSections[sectionIndex] = mem;
}
void UnloadSection(Exe* exe, unsigned int sectionIndex) {
aligned_free(exe->mappedSections[sectionIndex]);
exe->mappedSections[sectionIndex] = NULL;
}
static void UcTimerHook(void* uc, uint64_t address, uint32_t size, void* user_data) {
printf("Time is %" PRIu64 "\n", SDL_GetTicks());
}
// This is strictly for debug purposes, it attempts to dump fscanf (internally used by sscanf too)
static void UcFscanfHook(void* uc, uint64_t address, uint32_t size, void* user_data) {
printf("\nfscanf\n\n");
int eip;
uc_reg_read(uc, UC_X86_REG_EIP, &eip);
int esp;
uc_reg_read(uc, UC_X86_REG_ESP, &esp);
int eax;
uc_reg_read(uc, UC_X86_REG_EAX, &eax);
Address stackAddress = esp;
uint32_t* stack = (uint32_t*)Memory(stackAddress);
// This is the FILE struct used by microsoft CRT
typedef struct {
Address _ptr;
int32_t _cnt;
Address _base;
int32_t _flag;
int32_t _file;
int32_t _charbuf;
int32_t _bufsiz;
Address _tmpfname;
} _iobuf;
// Pop the return address
Address returnAddress = stack[0];
printf("Return at 0x%" PRIX32 "\n", returnAddress);
_iobuf* iob = Memory(stack[1]); // Get FILE object
char* buf = Memory(iob->_ptr);
printf("stream: 0x%" PRIX32 " ('%.100s...')\n", stack[1], buf);
char* fmt = (char*)Memory(stack[2]);
printf("fmt: 0x%" PRIX32 " ('%s')\n", stack[2], fmt);
// We'll let MS code handle buffer loads
if (buf == NULL) {
return;
}
#if 0
if (!strcmp(fmt, "%s")) {
SetTracing(true);
}
#endif
#if 0
//FIXME: Hack.. for these to work, they'd have to consume the buffer
if (!strcmp(fmt, "%s")) {
eax = sscanf(buf, fmt, Memory(stack[3]));
uc_reg_write(uc, UC_X86_REG_EAX, &eax);
eip = returnAddress;
uc_reg_write(uc, UC_X86_REG_EIP, &eip);
esp += 4;
uc_reg_write(uc, UC_X86_REG_ESP, &esp);
return;
}
if (!strcmp(fmt, "%f %f %f")) {
eax = 3; //sscanf(buf, fmt);
uc_reg_write(uc, UC_X86_REG_EAX, &eax);
eip = returnAddress;
uc_reg_write(uc, UC_X86_REG_EIP, &eip);
esp += 4;
uc_reg_write(uc, UC_X86_REG_ESP, &esp);
return;
}
#endif
}
// This is strictly for debug purposes, it attempts to add messages to the log in case of the weird-crash
static void UcCrashHook(void* uc, uint64_t address, uint32_t size, void* user_data) {
int eip;
uc_reg_read(uc, UC_X86_REG_EIP, &eip);
int esp;
uc_reg_read(uc, UC_X86_REG_ESP, &esp);
int eax;
uc_reg_read(uc, UC_X86_REG_EAX, &eax);
int ecx;
uc_reg_read(uc, UC_X86_REG_ECX, &ecx);
int edi;
uc_reg_read(uc, UC_X86_REG_EDI, &edi);
Address stackAddress = esp;
uint32_t* stack = (uint32_t*)Memory(stackAddress);
char buf[1024];
sprintf(buf, "Bug: ecx=0x%08" PRIX32 ", at eip=0x%08" PRIX32 ". 0x%08" PRIX32 " 0x%08" PRIX32 " 0x%08" PRIX32 " 0x%08" PRIX32,
ecx, eip,
stack[0], stack[1], stack[2], stack[3]);
glDebugMessageInsert(GL_DEBUG_SOURCE_APPLICATION, GL_DEBUG_TYPE_MARKER, 0, GL_DEBUG_SEVERITY_NOTIFICATION, -1, buf);
}
static void PrintVertices(unsigned int vertexFormat, Address address, unsigned int count) {
unsigned int texCount = ((vertexFormat & 0xF00) >> 8);
GLsizei stride = 4 * 4 + 4 + 4 + texCount * 8;
uint32_t* p = (uint32_t*)Memory(address);
for(unsigned int i = 0; i < count; i++) {
float* f = (float*)p;
printf(" %d. %f %f %f %f 0x%08" PRIX32 " 0x%08" PRIX32, i, f[0], f[1], f[2], f[3], p[4], p[5]);
p += 6;
if (texCount >= 1) {
printf(" %f %f", f[6], f[7]);
p += 2;
}
if (texCount >= 2) {
printf(" %f %f", f[8], f[9]);
p += 2;
}
printf("\n");
}
}
static void LoadIndices(Address address, unsigned int count) {
static GLuint buffer = 0;
if (buffer == 0) {
glGenBuffers(1, &buffer);
}
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, count * 2, Memory(address), GL_STREAM_DRAW);
}
static void LoadVertices(unsigned int vertexFormat, Address address, unsigned int count) {
unsigned int texCount = ((vertexFormat & 0xF00) >> 8);
GLsizei stride = 4 * 4 + 4 + 4 + texCount * 8;
static GLuint buffer = 0;
if (buffer == 0) {
glGenBuffers(1, &buffer);
}
glBindBuffer(GL_ARRAY_BUFFER, buffer);
glBufferData(GL_ARRAY_BUFFER, count * stride, Memory(address), GL_STREAM_DRAW);
}
int tex0Blend;
bool depthMask;
GLenum destBlend;
GLenum srcBlend;
bool alphaTest;
uint32_t fogColor; // ARGB
bool fogEnable;
int fogMode;
float fogStart;
float fogEnd;
float projectionMatrix[16];
float clipScale[3];
float clipOffset[3];
static GLenum SetupRenderer(unsigned int primitiveType, unsigned int vertexFormat) {
unsigned int texCount = ((vertexFormat & 0xF00) >> 8);
GLsizei stride = 4 * 4 + 4 + 4 + texCount * 8;
// Re-Volt only uses D3DFVF_XYZRHW | D3DFVF_DIFFUSE | D3DFVF_SPECULAR OR'd with either D3DFVF_TEX{0,1,2}
assert(texCount == 1);
GLuint program = 0;
glGetIntegerv(GL_CURRENT_PROGRAM, (GLint*)&program);
GLint positionIn = glGetAttribLocation(program, "positionIn");
if (positionIn != -1) {
glEnableVertexAttribArray(positionIn);
glVertexAttribPointer(positionIn, 4, GL_FLOAT, GL_FALSE, stride, (const GLvoid*)0);
}
GLint diffuseIn = glGetAttribLocation(program, "diffuseIn");
if (diffuseIn != -1) {
glEnableVertexAttribArray(diffuseIn);
glVertexAttribPointer(diffuseIn, 4, GL_UNSIGNED_BYTE, GL_TRUE, stride, (const GLvoid*)16);
}
GLint specularIn = glGetAttribLocation(program, "specularIn");
if (specularIn != -1) {
glEnableVertexAttribArray(specularIn);
glVertexAttribPointer(specularIn, 4, GL_UNSIGNED_BYTE, GL_TRUE, stride, (const GLvoid*)20);
}
GLint uv0In = glGetAttribLocation(program, "uv0In");
if (uv0In != -1) {
glEnableVertexAttribArray(uv0In);
glVertexAttribPointer(uv0In, 2, GL_FLOAT, GL_TRUE, stride, (const GLvoid*)24);
}
glUniform1i(glGetUniformLocation(program, "tex0Blend"), tex0Blend);
glUniform1i(glGetUniformLocation(program, "tex0"), 0);
glUniformMatrix4fv(glGetUniformLocation(program, "projectionMatrix"), 1, GL_FALSE, projectionMatrix);
glUniform1i(glGetUniformLocation(program, "alphaTest"), alphaTest);
glUniform1i(glGetUniformLocation(program, "fogMode"), fogEnable ? fogMode : API(D3DFOG_NONE));
glUniform1f(glGetUniformLocation(program, "fogStart"), fogStart);
glUniform1f(glGetUniformLocation(program, "fogEnd"), fogEnd);
glUniform3f(glGetUniformLocation(program, "fogColor"),
((fogColor >> 16) & 0xFF) / 255.0,
((fogColor >> 8) & 0xFF) / 255.0,
(fogColor & 0xFF) / 255.0);
glUniform3fv(glGetUniformLocation(program, "clipScale"), 1, clipScale);
glUniform3fv(glGetUniformLocation(program, "clipOffset"), 1, clipOffset);
glBlendFunc(srcBlend, destBlend);
#if 0
// Wireframe mode
glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
#endif
glDepthMask(depthMask ? GL_TRUE : GL_FALSE);
GLenum mode;
switch(primitiveType) {
case 1: mode = GL_POINTS; break; // D3DPT_POINTLIST
case 2: mode = GL_LINES; break; // D3DPT_LINELIST
case 3: mode = GL_LINE_STRIP; break; // D3DPT_LINESTRIP
case 4: mode = GL_TRIANGLES; break; // D3DPT_TRIANGLELIST
case 5: mode = GL_TRIANGLE_STRIP; break; // D3DPT_TRIANGLESTRIP
case 6: mode = GL_TRIANGLE_FAN; break; // D3DPT_TRIANGLEFAN
default:
assert(false);
break;
}
return mode;
}
// CRT-Startup / pre-WinMain:
HACKY_IMPORT_BEGIN(GetVersion)
hacky_printf("(No parameters)\n");
eax = 0x00010A04;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(HeapCreate)
hacky_printf("flOptions 0x%" PRIX32 "\n", stack[1]);
hacky_printf("dwInitialSize 0x%" PRIX32 "\n", stack[2]);
hacky_printf("dwMaximumSize 0x%" PRIX32 "\n", stack[3]);
eax = 0x555;
esp += 3 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(HeapAlloc)
hacky_printf("hHeap 0x%" PRIX32 "\n", stack[1]);
hacky_printf("dwFlags 0x%" PRIX32 "\n", stack[2]);
hacky_printf("dwBytes 0x%" PRIX32 "\n", stack[3]);
eax = Allocate(stack[3]);
//FIXME: Only do this if flag is set..
memset(Memory(eax), 0x00, stack[3]);
esp += 3 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(InitializeCriticalSection)
hacky_printf("lpCriticalSection 0x%" PRIX32 "\n", stack[1]);
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(TlsAlloc)
static int tlsIndex = 0;
assert(tlsIndex < 500);
eax = tlsIndex++; // TLS Index
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(EnterCriticalSection)
// Heavily impacts performance!
#if 1
hacky_printf("lpCriticalSection 0x%" PRIX32 "\n", stack[1]);
#else
silent = true;
#endif
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(LeaveCriticalSection)
// Heavily impacts performance!
#if 1
hacky_printf("lpCriticalSection 0x%" PRIX32 "\n", stack[1]);
#else
silent = true;
#endif
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(VirtualAlloc)
hacky_printf("lpAddress 0x%" PRIX32 "\n", stack[1]);
hacky_printf("dwSize 0x%" PRIX32 "\n", stack[2]);
hacky_printf("flAllocationType 0x%" PRIX32 "\n", stack[3]);
hacky_printf("flProtect 0x%" PRIX32 "\n", stack[4]);
eax = Allocate(stack[2]);
memset(Memory(eax), 0x00, stack[2]);
esp += 4 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(TlsSetValue)
hacky_printf("dwTlsIndex 0x%" PRIX32 "\n", stack[1]);
hacky_printf("lpTlsValue 0x%" PRIX32 "\n", stack[2]);
tls[stack[1]] = stack[2];
eax = 1; // nonzero if succeeds
esp += 2 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetCurrentThreadId)
eax = 666; // nonzero if succeeds
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetACP)
eax = 777; // nonzero if succeeds
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetModuleFileNameA)
hacky_printf("hModule 0x%" PRIX32 "\n", stack[1]);
hacky_printf("lpFilename 0x%" PRIX32 "\n", stack[2]);
hacky_printf("nSize 0x%" PRIX32 "\n", stack[3]);
const char* path = "XYZ";
assert(stack[3] >= (strlen(path) + 1));
eax = sprintf((char*)Memory(stack[2]), "%s", path); // number of chars written
esp += 3 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetCPInfo)
hacky_printf("CodePage 0x%" PRIX32 "\n", stack[1]);
hacky_printf("lpCPInfo 0x%" PRIX32 "\n", stack[2]);
eax = 1; // Returns 1 if successful, or 0 otherwise.
esp += 2 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetStartupInfoA)
hacky_printf("lpStartupInfo 0x%" PRIX32 "\n", stack[1]);
memset(Memory(stack[1]), 0x00, 68);
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetStdHandle)
hacky_printf("nStdHandle 0x%" PRIX32 "\n", stack[1]);
eax = 888;
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetFileType)
hacky_printf("hFile 0x%" PRIX32 "\n", stack[1]);
//eax = 2; // FILE_TYPE_CHAR
eax = 1; // FILE_TYPE_DISK
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(SetHandleCount)
hacky_printf("uNumber 0x%" PRIX32 "\n", stack[1]);
eax = stack[1];
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetCommandLineA)
const char* cmd = "swep1rcr.exe";
Address tmp = Allocate(strlen(cmd) + 1);
strcpy((char*)Memory(tmp), cmd);
eax = tmp;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetEnvironmentStringsW)
Address tmp = Allocate(4);
((char*)Memory(tmp))[0] = '\0';
((char*)Memory(tmp))[1] = '\0';
((char*)Memory(tmp))[2] = '\0';
((char*)Memory(tmp))[3] = '\0';
eax = tmp;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(WideCharToMultiByte)
hacky_printf("CodePage 0x%" PRIX32 "\n", stack[1]);
hacky_printf("dwFlags 0x%" PRIX32 "\n", stack[2]);
hacky_printf("lpWideCharStr 0x%" PRIX32 "\n", stack[3]);
hacky_printf("cchWideChar 0x%" PRIX32 "\n", stack[4]);
hacky_printf("lpMultiByteStr 0x%" PRIX32 "\n", stack[5]);
hacky_printf("cbMultiByte 0x%" PRIX32 "\n", stack[6]);
hacky_printf("lpDefaultChar 0x%" PRIX32 "\n", stack[7]);
hacky_printf("lpUsedDefaultChar 0x%" PRIX32 "\n", stack[8]);
eax = 1; //FIXME: Number of chars written
esp += 8 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(MultiByteToWideChar)
hacky_printf("CodePage 0x%" PRIX32 "\n", stack[1]);
hacky_printf("dwFlags 0x%" PRIX32 "\n", stack[2]);
hacky_printf("lpMultiByteStr 0x%" PRIX32 "\n", stack[3]);
hacky_printf("cbMultiByte 0x%" PRIX32 "\n", stack[4]);
hacky_printf("lpWideCharStr 0x%" PRIX32 "\n", stack[5]);
hacky_printf("cchWideChar 0x%" PRIX32 "\n", stack[6]);
//FIXME: MOVE SYMBOLS?!
eax = 0; //FIXME: Number of chars written
esp += 6 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(LCMapStringW)
hacky_printf("Locale 0x%" PRIX32 "\n", stack[1]);
hacky_printf("dwMapFlags 0x%" PRIX32 "\n", stack[2]);
hacky_printf("lpSrcStr 0x%" PRIX32 "\n", stack[3]);
hacky_printf("cchSrc 0x%" PRIX32 "\n", stack[4]);
hacky_printf("lpDestStr 0x%" PRIX32 "\n", stack[5]);
hacky_printf("cchDest 0x%" PRIX32 "\n", stack[6]);
//FIXME: MOVE SYMBOLS?!
eax = 1 + 1; //FIXME: Number of chars in translated string including zero term
esp += 6 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetModuleHandleA)
hacky_printf("lpModuleName 0x%" PRIX32 " ('%s')\n", stack[1], Memory(stack[1]));
eax = 999;
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetProcAddress)
Address lpProcName = stack[2];
const char* procName = Memory(lpProcName);
hacky_printf("hModule 0x%" PRIX32 "\n", stack[1]);
hacky_printf("lpProcName 0x%" PRIX32 " ('%s')\n", lpProcName, procName);
Export* export = LookupExportByName(procName);
if (export == NULL) {
printf("Export for '%s' could not be found\n", procName);
eax = 0;
assert(false);
} else {
//FIXME: Use existing address for export
Address hltAddress = CreateHlt();
AddHltHandler(hltAddress, export->callback, (void*)procName);
eax = hltAddress;
printf("Providing at 0x%08X\n", hltAddress);
}
esp += 2 * 4;
HACKY_IMPORT_END()
// This one is retrieved using GetProcAddress!
HACKY_IMPORT_BEGIN(IsProcessorFeaturePresent)
hacky_printf("ProcessorFeature 0x%" PRIX32 "\n", stack[1]);
eax = 0; // Feature not supported = zero; else nonzero
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(SetUnhandledExceptionFilter)
// (Only used in 1207 revolt.exe CRT)
hacky_printf("lpTopLevelExceptionFilter 0x%" PRIX32 "\n", stack[1]);
eax = 0; // Previous handler (NULL = none existed)
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(QueryPerformanceCounter)
hacky_printf("lpPerformanceCount 0x%" PRIX32 "\n", stack[1]);
*(uint64_t*)Memory(stack[1]) = SDL_GetPerformanceCounter();
eax = 1; // nonzero if succeeds
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(FreeEnvironmentStringsW)
hacky_printf("lpszEnvironmentBlock 0x%" PRIX32 "\n", stack[1]);
eax = 1; // nonzero if succeeds
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetStringTypeW)
hacky_printf("dwInfoType 0x%" PRIX32 "\n", stack[1]);
hacky_printf("lpSrcStr 0x%" PRIX32 "\n", stack[2]);
hacky_printf("cchSrc 0x%" PRIX32 "\n", stack[3]);
hacky_printf("lpCharType 0x%" PRIX32 "\n", stack[4]);
eax = 1; // nonzero if succeeds
esp += 4 * 4;
HACKY_IMPORT_END()
// Actual revolt.exe starts here, anything until this point was CRT-Startup / pre-WinMain:
HACKY_IMPORT_BEGIN(GetCursorPos)
hacky_printf("lpPoint 0x%" PRIX32 "\n", stack[1]);
int32_t* point = (int32_t*)Memory(stack[1]);
int x;
int y;
SDL_GetMouseState(&x, &y);
point[0] = x;
point[1] = y;
eax = 1; // nonzero if succeeds
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(SetCursorPos)
hacky_printf("x %" PRIu32 "\n", stack[1]);
hacky_printf("y %" PRIu32 "\n", stack[2]);
eax = 1; // nonzero if succeeds
esp += 2 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetKeyNameTextA)
hacky_printf("lParam 0x%" PRIX32 "\n", stack[1]);
hacky_printf("lpString 0x%" PRIX32 " ('%s')\n", stack[2], (char*)Memory(stack[2]));
hacky_printf("cchSize %" PRIu32 "\n", stack[3]);
eax = snprintf(Memory(stack[2]), stack[3], "k%" PRIu32, stack[1]); // Cancel was selected
esp += 3 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetComputerNameA)
hacky_printf("lpBuffer 0x%" PRIX32 "\n", stack[1]);
uint32_t* size = (uint32_t*)Memory(stack[2]);
hacky_printf("lpnSize 0x%" PRIX32 " (%" PRIu32 ")\n", stack[2], *size);
*size = snprintf(Memory(stack[1]), *size, "ComputerName"); // Cancel was selected
eax = 1; // nonzero if succeeds
esp += 2 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(timeGetTime)
//FIXME: Avoid overflow?
eax = SDL_GetTicks();
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetLastError)
silent = true;
eax = 0; // no error
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(TlsGetValue)
silent = true;
if (!silent) {
hacky_printf("dwTlsIndex 0x%" PRIX32 "\n", stack[1]);
}
eax = tls[stack[1]]; // TLS value FIXME!
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(SetLastError)
silent = true;
if (!silent) {
hacky_printf("dwErrCode 0x%" PRIX32 "\n", stack[1]);
}
eax = 0; // TLS value FIXME!
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(LocalAlloc)
silent = true;
if (!silent) {
hacky_printf("uFlags 0x%" PRIX32 "\n", stack[1]);
hacky_printf("uBytes 0x%" PRIX32 "\n", stack[2]);
}
eax = Allocate(stack[2]);
// Only if zeroinit: clear
if (stack[1] & 0x40) {
memset(Memory(eax), 0x00, stack[2]);
}
esp += 2 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(LocalFree)
silent = true;
if (!silent) {
hacky_printf("hMem 0x%" PRIX32 "\n", stack[1]);
}
Free(stack[1]);
eax = 0; // NULL on success
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(FindWindowA)
hacky_printf("lpClassName 0x%" PRIX32 " ('%s')\n", stack[1], (char*)Memory(stack[1]));
hacky_printf("lpWindowName 0x%" PRIX32 " ('%s')\n", stack[2], (char*)Memory(stack[2]));
eax = 0; // NULL = window not found, else HWND
esp += 2 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(MessageBoxA)
hacky_printf("hWnd 0x%" PRIX32 "\n", stack[1]);
hacky_printf("lpText 0x%" PRIX32 " ('%s')\n", stack[2], (char*)Memory(stack[2]));
hacky_printf("lpCaption 0x%" PRIX32 " ('%s')\n", stack[3], (char*)Memory(stack[3]));
hacky_printf("uType 0x%" PRIX32 "\n", stack[4]);
SDL_Delay(5000);
eax = 2; // Cancel was selected
esp += 4 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(ExitProcess)
hacky_printf("uExitCode 0x%" PRIX32 "\n", stack[1]);
exit(EXIT_FAILURE); //FIXME: Instead, handle this gracefully somehow?!
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(GetTempPathA)
hacky_printf("nBufferLength 0x%" PRIX32 "\n", stack[1]);
hacky_printf("lpBuffer 0x%" PRIX32 "\n", stack[2]);
assert(stack[1] >= 6);
eax = sprintf((char*)Memory(stack[2]), "%s", "/tmp/"); // number of chars writte
esp += 2 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(wsprintfA)
// __cdecl!
hacky_printf("lpOut 0x%" PRIX32 "\n", stack[1]);
hacky_printf("lpFmt 0x%" PRIX32 " ('%s')\n", stack[2], (char*)Memory(stack[2]));
char* out = (char*)Memory(stack[1]);
const char* in = (char*)Memory(stack[2]);
unsigned int count = 0;
unsigned int stackIndex = 3;
while(*in != '\0') {
const char* nextPercent = strchr(in, '%');
if (nextPercent == NULL) {
count += sprintf(&out[count], in); // Copy rest of the input to output
break;
}
unsigned int length = nextPercent - in;
memcpy(&out[count], in, length);
in += length;
count += length;
in = nextPercent + 1;
char type = *in++;
switch(type) {
case 'c':
count += sprintf(&out[count], "%c", stack[stackIndex++]);
break;
case 's':
count += sprintf(&out[count], "%s", (char*)Memory(stack[stackIndex++]));
break;
case 'd':
count += sprintf(&out[count], "%d", stack[stackIndex++]);
break;
default:
printf("Unknown format type '%c'\n", type);
assert(false);
}
}
eax = count;
printf("Out: '%s'\n", out);
HACKY_IMPORT_END()
static FILE* file_handles[16] = {0};
static unsigned int find_free_file_handle() {
for(unsigned int i = 0; i < ARRAY_SIZE(file_handles); i++) {
if (file_handles[i] == NULL) {
return i;
}
}
assert(false);
return (unsigned int)-1;
}
HACKY_IMPORT_BEGIN(CreateFileA)
const char* lpFileName = (char*)Memory(stack[1]);
hacky_printf("lpFileName 0x%" PRIX32 " ('%s')\n", stack[1], lpFileName);
hacky_printf("dwDesiredAccess 0x%" PRIX32 "\n", stack[2]);
hacky_printf("dwShareMode 0x%" PRIX32 "\n", stack[3]);
hacky_printf("lpSecurityAttributes 0x%" PRIX32 "\n", stack[4]);
hacky_printf("dwCreationDisposition 0x%" PRIX32 "\n", stack[5]);
hacky_printf("dwFlagsAndAttributes 0x%" PRIX32 "\n", stack[6]);
hacky_printf("hTemplateFile 0x%" PRIX32 "\n", stack[7]);
bool is_cd;
char* path = TranslatePath(lpFileName, &is_cd);
// Get desired access type
bool is_write = stack[2] & 0x40000000;
// Disallow writing to CD
if (is_cd && is_write) {
printf("Denied to open file ('%s' as '%s')\n", lpFileName, path);
eax = 0xFFFFFFFF;
} else {
FILE* f = fopen(path, is_write ? (stack[5] == 4 ? "ab" : "wb") : "rb");
if (f != NULL) {
unsigned int handle_index = find_free_file_handle();
printf("File handle is 0x%" PRIX32 "\n", handle_index);
file_handles[handle_index] = f;
eax = handle_index;
} else {
printf("Failed to open file ('%s' as '%s')\n", lpFileName, path);
eax = 0xFFFFFFFF;
}
}
free(path);
esp += 7 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(WriteFile)
hacky_printf("hFile 0x%" PRIX32 "\n", stack[1]);
hacky_printf("lpBuffer 0x%" PRIX32 "\n", stack[2]);
hacky_printf("nNumberOfBytesToWrite 0x%" PRIX32 "\n", stack[3]);
hacky_printf("lpNumberOfBytesWritten 0x%" PRIX32 "\n", stack[4]);
hacky_printf("lpOverlapped 0x%" PRIX32 "\n", stack[5]);
*(uint32_t*)Memory(stack[4]) = fwrite(Memory(stack[2]), 1, stack[3], file_handles[stack[1]]);
eax = 1; // nonzero if succeeds
esp += 5 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(HeapFree)
hacky_printf("hHeap 0x%" PRIX32 "\n", stack[1]);
hacky_printf("dwFlags 0x%" PRIX32 "\n", stack[2]);
hacky_printf("lpMem 0x%" PRIX32 "\n", stack[3]);
assert(stack[2] == 0x0);
Free(stack[3]);
eax = 1; // nonzero if succeeds
esp += 3 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(CloseHandle)
hacky_printf("hObject 0x%" PRIX32 "\n", stack[1]);
if (stack[1] == 5554321) { // Thread handle..
eax = 1; // nonzero if succeeds
} else if (stack[1] == 5551337) { // Thread handle..
eax = 1; // nonzero if succeeds
} else {
unsigned int handle_index = stack[1];
eax = fclose(file_handles[handle_index]) ? 0 : 1; // nonzero if succeeds
file_handles[handle_index] = NULL;
}
esp += 1 * 4;
HACKY_IMPORT_END()
HACKY_IMPORT_BEGIN(CoInitialize)
hacky_printf("pvReserved 0x%" PRIX32 "\n", stack[1]);
assert(stack[1] == 0x00000000);