| process.c (ea68a3e9d14e9e0bf017d178fb4bd53b6deb1482) | process.c (6032aca0deb9c138df122192f8ef02de1fdccf25) |
|---|---|
| 1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Copyright (C) 2015 Thomas Meyer (thomas@m3y3r.de) 4 * Copyright (C) 2002- 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) 5 */ 6 7#include <stdlib.h> 8#include <stdbool.h> --- 248 unchanged lines hidden (view full) --- 257 printk(UM_KERN_ERR "mapping mmap stub at 0x%lx failed, errno = %d\n", 258 STUB_CODE, errno); 259 exit(1); 260 } 261 262 if (stack != NULL) { 263 fd = phys_mapping(uml_to_phys(stack), &offset); 264 addr = mmap((void *) STUB_DATA, | 1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Copyright (C) 2015 Thomas Meyer (thomas@m3y3r.de) 4 * Copyright (C) 2002- 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) 5 */ 6 7#include <stdlib.h> 8#include <stdbool.h> --- 248 unchanged lines hidden (view full) --- 257 printk(UM_KERN_ERR "mapping mmap stub at 0x%lx failed, errno = %d\n", 258 STUB_CODE, errno); 259 exit(1); 260 } 261 262 if (stack != NULL) { 263 fd = phys_mapping(uml_to_phys(stack), &offset); 264 addr = mmap((void *) STUB_DATA, |
| 265 UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE, | 265 STUB_DATA_PAGES * UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE, |
| 266 MAP_FIXED | MAP_SHARED, fd, offset); 267 if (addr == MAP_FAILED) { 268 printk(UM_KERN_ERR "mapping segfault stack at 0x%lx failed, errno = %d\n", 269 STUB_DATA, errno); 270 exit(1); 271 } 272 } 273 if (stack != NULL) { 274 struct sigaction sa; 275 276 unsigned long v = STUB_CODE + 277 (unsigned long) stub_segv_handler - 278 (unsigned long) __syscall_stub_start; 279 | 266 MAP_FIXED | MAP_SHARED, fd, offset); 267 if (addr == MAP_FAILED) { 268 printk(UM_KERN_ERR "mapping segfault stack at 0x%lx failed, errno = %d\n", 269 STUB_DATA, errno); 270 exit(1); 271 } 272 } 273 if (stack != NULL) { 274 struct sigaction sa; 275 276 unsigned long v = STUB_CODE + 277 (unsigned long) stub_segv_handler - 278 (unsigned long) __syscall_stub_start; 279 |
| 280 set_sigstack((void *) STUB_DATA, UM_KERN_PAGE_SIZE); | 280 set_sigstack((void *) STUB_DATA, STUB_DATA_PAGES * UM_KERN_PAGE_SIZE); |
| 281 sigemptyset(&sa.sa_mask); 282 sa.sa_flags = SA_ONSTACK | SA_NODEFER | SA_SIGINFO; 283 sa.sa_sigaction = (void *) v; 284 sa.sa_restorer = NULL; 285 if (sigaction(SIGSEGV, &sa, NULL) < 0) { 286 printk(UM_KERN_ERR "%s - setting SIGSEGV handler failed - errno = %d\n", 287 __func__, errno); 288 exit(1); --- 221 unchanged lines hidden (view full) --- 510 511static int __init init_thread_regs(void) 512{ 513 get_safe_registers(thread_regs, thread_fp_regs); 514 /* Set parent's instruction pointer to start of clone-stub */ 515 thread_regs[REGS_IP_INDEX] = STUB_CODE + 516 (unsigned long) stub_clone_handler - 517 (unsigned long) __syscall_stub_start; | 281 sigemptyset(&sa.sa_mask); 282 sa.sa_flags = SA_ONSTACK | SA_NODEFER | SA_SIGINFO; 283 sa.sa_sigaction = (void *) v; 284 sa.sa_restorer = NULL; 285 if (sigaction(SIGSEGV, &sa, NULL) < 0) { 286 printk(UM_KERN_ERR "%s - setting SIGSEGV handler failed - errno = %d\n", 287 __func__, errno); 288 exit(1); --- 221 unchanged lines hidden (view full) --- 510 511static int __init init_thread_regs(void) 512{ 513 get_safe_registers(thread_regs, thread_fp_regs); 514 /* Set parent's instruction pointer to start of clone-stub */ 515 thread_regs[REGS_IP_INDEX] = STUB_CODE + 516 (unsigned long) stub_clone_handler - 517 (unsigned long) __syscall_stub_start; |
| 518 thread_regs[REGS_SP_INDEX] = STUB_DATA + UM_KERN_PAGE_SIZE - | 518 thread_regs[REGS_SP_INDEX] = STUB_DATA + STUB_DATA_PAGES * UM_KERN_PAGE_SIZE - |
| 519 sizeof(void *); 520#ifdef __SIGNAL_FRAMESIZE 521 thread_regs[REGS_SP_INDEX] -= __SIGNAL_FRAMESIZE; 522#endif 523 return 0; 524} 525 526__initcall(init_thread_regs); --- 206 unchanged lines hidden --- | 519 sizeof(void *); 520#ifdef __SIGNAL_FRAMESIZE 521 thread_regs[REGS_SP_INDEX] -= __SIGNAL_FRAMESIZE; 522#endif 523 return 0; 524} 525 526__initcall(init_thread_regs); --- 206 unchanged lines hidden --- |