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functions libkernel to get openrorbis working (without tls)

This commit is contained in:
georgemoralis 2023-11-19 12:55:07 +02:00
parent f57f668c92
commit 4f6dc8fddb
1 changed files with 69 additions and 0 deletions
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69
src/core/hle/libraries/libkernel/libkernel.cpp
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@ -14,11 +14,14 @@
#ifdef _WIN64
#include <windows.h>
#include <io.h>
#endif
#include "thread_management.h"
namespace Core::Libraries::LibKernel {
constexpr bool log_libkernel_file = true; // disable it to disable logging
static u64 g_stack_chk_guard = 0xDEADBEEF54321ABC; // dummy return
int32_t PS4_SYSV_ABI sceKernelReleaseDirectMemory(off_t start, size_t len) {
@ -30,9 +33,72 @@ static PS4_SYSV_ABI void stack_chk_fail() { BREAKPOINT(); }
int PS4_SYSV_ABI sceKernelMunmap(void* addr, size_t len) { BREAKPOINT(); }
void PS4_SYSV_ABI sceKernelUsleep(unsigned int microseconds) { std::this_thread::sleep_for(std::chrono::microseconds(microseconds)); }
struct iovec {
void* iov_base; /* Base address. */
size_t iov_len; /* Length. */
};
size_t PS4_SYSV_ABI _writev(int fd, const struct iovec* iov, int iovcn) {
// weird it gives fd ==0 and writes to stdout , i am not sure if it that is valid (found in openorbis)
size_t total_written = 0;
for (int i = 0; i < iovcn; i++) {
total_written += ::fwrite(iov[i].iov_base, 1, iov[i].iov_len, stdout);
}
return total_written;
}
static thread_local int libc_error;
int* PS4_SYSV_ABI __Error() { return &libc_error; }
#define PROT_READ 0x1
#define PROT_WRITE 0x2
int PS4_SYSV_ABI sceKernelMmap(void* addr, u64 len, int prot, int flags, int fd, off_t offset, void** res) {
PRINT_FUNCTION_NAME();
if (prot > 3) // READ,WRITE or bitwise READ | WRITE supported
{
LOG_ERROR_IF(log_libkernel_file, "sceKernelMmap prot ={} not supported\n", prot);
}
DWORD flProtect;
if (prot & PROT_WRITE) {
flProtect = PAGE_READWRITE;
}
off_t end = len + offset;
HANDLE mmap_fd, h;
if (fd == -1)
mmap_fd = INVALID_HANDLE_VALUE;
else
mmap_fd = (HANDLE)_get_osfhandle(fd);
h = CreateFileMapping(mmap_fd, NULL, flProtect, 0, end, NULL);
int k = GetLastError();
if (NULL == h) return -1;
DWORD dwDesiredAccess;
if (prot & PROT_WRITE)
dwDesiredAccess = FILE_MAP_WRITE;
else
dwDesiredAccess = FILE_MAP_READ;
void* ret = MapViewOfFile(h, dwDesiredAccess, 0, offset, len);
if (ret == NULL) {
CloseHandle(h);
ret = nullptr;
}
*res = ret;
return 0;
}
PS4_SYSV_ABI void* posix_mmap(void* addr, u64 len, int prot, int flags, int fd, u64 offset) {
void* ptr;
LOG_INFO_IF(log_libkernel_file, "posix mmap redirect to sceKernelMmap\n");
// posix call the difference is that there is a different behaviour when it doesn't return 0 or SCE_OK
int result = sceKernelMmap(addr, len, prot, flags, fd, offset, &ptr);
if (result != 0) {
BREAKPOINT();
}
return ptr;
}
void LibKernel_Register(Loader::SymbolsResolver* sym) {
// obj
LIB_OBJ("f7uOxY9mM1U", "libkernel", 1, "libkernel", 1, 1, &g_stack_chk_guard);
@ -49,6 +115,9 @@ void LibKernel_Register(Loader::SymbolsResolver* sym) {
LIB_FUNCTION("WslcK1FQcGI", "libkernel", 1, "libkernel", 1, 1, Kernel::sceKernelIsNeoMode);
LIB_FUNCTION("Ou3iL1abvng", "libkernel", 1, "libkernel", 1, 1, stack_chk_fail);
LIB_FUNCTION("9BcDykPmo1I", "libkernel", 1, "libkernel", 1, 1, __Error);
LIB_FUNCTION("BPE9s9vQQXo", "libkernel", 1, "libkernel", 1, 1, posix_mmap);
LIB_FUNCTION("1jfXLRVzisc", "libkernel", 1, "libkernel", 1, 1, sceKernelUsleep);
LIB_FUNCTION("YSHRBRLn2pI", "libkernel", 1, "libkernel", 1, 1, _writev);
Core::Libraries::LibKernel::fileSystemSymbolsRegister(sym);
Core::Libraries::LibKernel::timeSymbolsRegister(sym);