mirror of
https://github.com/ps5-payload-dev/sdk.git
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60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
/* Copyright (C) 2024 John Törnblom
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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later version.
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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 for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, see
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<http://www.gnu.org/licenses/>. */
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#include "payload.h"
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static __attribute__ ((used)) long ptr_syscall = 0;
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void
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__crt_syscall() {
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asm(".intel_syntax noprefix\n"
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" mov rax, rdi\n"
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" mov rdi, rsi\n"
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" mov rsi, rdx\n"
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" mov rdx, rcx\n"
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" mov r10, r8\n"
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" mov r8, r9\n"
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" mov r9, qword ptr [rsp + 8]\n"
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" call qword ptr [rip + ptr_syscall]\n"
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" ret\n");
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}
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int
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__crt_syscall_init(payload_args_t *args) {
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int (*sceKernelDlsym)(int, const char*, void*) = 0;
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if(args->sys_dynlib_dlsym(0x1, "sceKernelDlsym", &sceKernelDlsym)) {
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args->sys_dynlib_dlsym(0x2001, "sceKernelDlsym", &sceKernelDlsym);
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}
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if(sceKernelDlsym == args->sys_dynlib_dlsym) {
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if(args->sys_dynlib_dlsym(0x1, "getpid", &ptr_syscall)) {
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args->sys_dynlib_dlsym(0x2001, "getpid", &ptr_syscall);
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}
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} else {
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ptr_syscall = (long)args->sys_dynlib_dlsym;
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}
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if(!ptr_syscall) {
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return -1;
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}
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ptr_syscall += 0xa; // jump directly to the syscall instruction
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return 0;
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}
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