SYSCALL_DEFINE3(cacheflush, unsigned long, addr, unsigned long, len, int, op) { if (is_user_addr_valid(current, addr, len) != 0) return -EINVAL; if (op & DCACHE) blackfin_dcache_flush_range(addr, addr + len); if (op & ICACHE) blackfin_icache_flush_range(addr, addr + len); return 0; }
long arch_ptrace(struct task_struct *child, long request, long addr, long data) { int ret; unsigned long __user *datap = (unsigned long __user *)data; switch (request) { /* when I and D space are separate, these will need to be fixed. */ case PTRACE_PEEKDATA: pr_debug("ptrace: PEEKDATA\n"); /* fall through */ case PTRACE_PEEKTEXT: /* read word at location addr. */ { unsigned long tmp = 0; int copied; ret = -EIO; pr_debug("ptrace: PEEKTEXT at addr 0x%08lx + %ld\n", addr, sizeof(data)); if (is_user_addr_valid(child, addr, sizeof(tmp)) < 0) break; pr_debug("ptrace: user address is valid\n"); if (L1_CODE_LENGTH != 0 && addr >= get_l1_code_start() && addr + sizeof(tmp) <= get_l1_code_start() + L1_CODE_LENGTH) { safe_dma_memcpy (&tmp, (const void *)(addr), sizeof(tmp)); copied = sizeof(tmp); } else if (L1_DATA_A_LENGTH != 0 && addr >= L1_DATA_A_START && addr + sizeof(tmp) <= L1_DATA_A_START + L1_DATA_A_LENGTH) { memcpy(&tmp, (const void *)(addr), sizeof(tmp)); copied = sizeof(tmp); } else if (L1_DATA_B_LENGTH != 0 && addr >= L1_DATA_B_START && addr + sizeof(tmp) <= L1_DATA_B_START + L1_DATA_B_LENGTH) { memcpy(&tmp, (const void *)(addr), sizeof(tmp)); copied = sizeof(tmp); } else if (addr >= FIXED_CODE_START && addr + sizeof(tmp) <= FIXED_CODE_END) { copy_from_user_page(0, 0, 0, &tmp, (const void *)(addr), sizeof(tmp)); copied = sizeof(tmp); } else copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0); pr_debug("ptrace: copied size %d [0x%08lx]\n", copied, tmp); if (copied != sizeof(tmp)) break; ret = put_user(tmp, datap); break; } /* read the word at location addr in the USER area. */ case PTRACE_PEEKUSR: { unsigned long tmp; ret = -EIO; tmp = 0; if ((addr & 3) || (addr > (sizeof(struct pt_regs) + 16))) { printk(KERN_WARNING "ptrace error : PEEKUSR : temporarily returning " "0 - %x sizeof(pt_regs) is %lx\n", (int)addr, sizeof(struct pt_regs)); break; } if (addr == sizeof(struct pt_regs)) { /* PT_TEXT_ADDR */ tmp = child->mm->start_code + TEXT_OFFSET; } else if (addr == (sizeof(struct pt_regs) + 4)) { /* PT_TEXT_END_ADDR */ tmp = child->mm->end_code; } else if (addr == (sizeof(struct pt_regs) + 8)) { /* PT_DATA_ADDR */ tmp = child->mm->start_data; #ifdef CONFIG_BINFMT_ELF_FDPIC } else if (addr == (sizeof(struct pt_regs) + 12)) { tmp = child->mm->context.exec_fdpic_loadmap; } else if (addr == (sizeof(struct pt_regs) + 16)) { tmp = child->mm->context.interp_fdpic_loadmap; #endif } else { tmp = get_reg(child, addr); } ret = put_user(tmp, datap); break; } /* when I and D space are separate, this will have to be fixed. */ case PTRACE_POKEDATA: pr_debug("ptrace: PTRACE_PEEKDATA\n"); /* fall through */ case PTRACE_POKETEXT: /* write the word at location addr. */ { int copied; ret = -EIO; pr_debug("ptrace: POKETEXT at addr 0x%08lx + %ld bytes %lx\n", addr, sizeof(data), data); if (is_user_addr_valid(child, addr, sizeof(data)) < 0) break; pr_debug("ptrace: user address is valid\n"); if (L1_CODE_LENGTH != 0 && addr >= get_l1_code_start() && addr + sizeof(data) <= get_l1_code_start() + L1_CODE_LENGTH) { safe_dma_memcpy ((void *)(addr), &data, sizeof(data)); copied = sizeof(data); } else if (L1_DATA_A_LENGTH != 0 && addr >= L1_DATA_A_START && addr + sizeof(data) <= L1_DATA_A_START + L1_DATA_A_LENGTH) { memcpy((void *)(addr), &data, sizeof(data)); copied = sizeof(data); } else if (L1_DATA_B_LENGTH != 0 && addr >= L1_DATA_B_START && addr + sizeof(data) <= L1_DATA_B_START + L1_DATA_B_LENGTH) { memcpy((void *)(addr), &data, sizeof(data)); copied = sizeof(data); } else if (addr >= FIXED_CODE_START && addr + sizeof(data) <= FIXED_CODE_END) { copy_to_user_page(0, 0, 0, (void *)(addr), &data, sizeof(data)); copied = sizeof(data); } else copied = access_process_vm(child, addr, &data, sizeof(data), 1); pr_debug("ptrace: copied size %d\n", copied); if (copied != sizeof(data)) break; ret = 0; break; } case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ ret = -EIO; if ((addr & 3) || (addr > (sizeof(struct pt_regs) + 16))) { printk(KERN_WARNING "ptrace error : POKEUSR: temporarily returning 0\n"); break; } if (addr >= (sizeof(struct pt_regs))) { ret = 0; break; } if (addr == PT_SYSCFG) { data &= SYSCFG_MASK; data |= get_reg(child, PT_SYSCFG); } ret = put_reg(child, addr, data); break; case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */ case PTRACE_CONT: /* restart after signal. */ pr_debug("ptrace: syscall/cont\n"); ret = -EIO; if (!valid_signal(data)) break; if (request == PTRACE_SYSCALL) set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); else clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); child->exit_code = data; ptrace_disable(child); pr_debug("ptrace: before wake_up_process\n"); wake_up_process(child); ret = 0; break; /* * make the child exit. Best I can do is send it a sigkill. * perhaps it should be put in the status that it wants to * exit. */ case PTRACE_KILL: ret = 0; if (child->exit_state == EXIT_ZOMBIE) /* already dead */ break; child->exit_code = SIGKILL; ptrace_disable(child); wake_up_process(child); break; case PTRACE_SINGLESTEP: /* set the trap flag. */ pr_debug("ptrace: single step\n"); ret = -EIO; if (!valid_signal(data)) break; clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); ptrace_enable(child); child->exit_code = data; wake_up_process(child); ret = 0; break; case PTRACE_GETREGS: /* Get all gp regs from the child. */ ret = ptrace_getregs(child, datap); break; case PTRACE_SETREGS: printk(KERN_WARNING "ptrace: SETREGS: **** NOT IMPLEMENTED ***\n"); /* Set all gp regs in the child. */ ret = 0; break; default: ret = ptrace_request(child, request, addr, data); break; } return ret; }
long arch_ptrace(struct task_struct *child, long request, long addr, long data) { unsigned long tmp; int ret; switch (request) { /* when I and D space are separate, these will need to be fixed. */ case PTRACE_PEEKTEXT: /* read word at location addr. */ case PTRACE_PEEKDATA: { int copied; ret = -EIO; if (is_user_addr_valid(child, addr, sizeof(tmp)) < 0) break; copied = access_process_vm(child, addr, &tmp, sizeof(tmp), 0); if (copied != sizeof(tmp)) break; ret = put_user(tmp,(unsigned long *) data); break; } /* read the word at location addr in the USER area. */ case PTRACE_PEEKUSR: { tmp = 0; ret = -EIO; if ((addr & 3) || addr < 0) break; ret = 0; switch (addr >> 2) { case 0 ... PT__END - 1: tmp = get_reg(child, addr >> 2); break; case PT__END + 0: tmp = child->mm->end_code - child->mm->start_code; break; case PT__END + 1: tmp = child->mm->end_data - child->mm->start_data; break; case PT__END + 2: tmp = child->mm->start_stack - child->mm->start_brk; break; case PT__END + 3: tmp = child->mm->start_code; break; case PT__END + 4: tmp = child->mm->start_stack; break; default: ret = -EIO; break; } if (ret == 0) ret = put_user(tmp, (unsigned long *) data); break; } /* when I and D space are separate, this will have to be fixed. */ case PTRACE_POKETEXT: /* write the word at location addr. */ case PTRACE_POKEDATA: ret = -EIO; if (is_user_addr_valid(child, addr, sizeof(tmp)) < 0) break; if (access_process_vm(child, addr, &data, sizeof(data), 1) != sizeof(data)) break; ret = 0; break; case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ ret = -EIO; if ((addr & 3) || addr < 0) break; ret = 0; switch (addr >> 2) { case 0 ... PT__END-1: ret = put_reg(child, addr >> 2, data); break; default: ret = -EIO; break; } break; case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */ case PTRACE_CONT: /* restart after signal. */ ret = -EIO; if (!valid_signal(data)) break; if (request == PTRACE_SYSCALL) set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); else clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); child->exit_code = data; ptrace_disable(child); wake_up_process(child); ret = 0; break; /* make the child exit. Best I can do is send it a sigkill. * perhaps it should be put in the status that it wants to * exit. */ case PTRACE_KILL: ret = 0; if (child->exit_state == EXIT_ZOMBIE) /* already dead */ break; child->exit_code = SIGKILL; clear_tsk_thread_flag(child, TIF_SINGLESTEP); ptrace_disable(child); wake_up_process(child); break; case PTRACE_SINGLESTEP: /* set the trap flag. */ ret = -EIO; if (!valid_signal(data)) break; clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); ptrace_enable(child); child->exit_code = data; wake_up_process(child); ret = 0; break; case PTRACE_DETACH: /* detach a process that was attached. */ ret = ptrace_detach(child, data); break; case PTRACE_GETREGS: { /* Get all integer regs from the child. */ int i; for (i = 0; i < PT__GPEND; i++) { tmp = get_reg(child, i); if (put_user(tmp, (unsigned long *) data)) { ret = -EFAULT; break; } data += sizeof(long); } ret = 0; break; } case PTRACE_SETREGS: { /* Set all integer regs in the child. */ int i; for (i = 0; i < PT__GPEND; i++) { if (get_user(tmp, (unsigned long *) data)) { ret = -EFAULT; break; } put_reg(child, i, tmp); data += sizeof(long); } ret = 0; break; } case PTRACE_GETFPREGS: { /* Get the child FP/Media state. */ ret = 0; if (copy_to_user((void *) data, &child->thread.user->f, sizeof(child->thread.user->f))) ret = -EFAULT; break; } case PTRACE_SETFPREGS: { /* Set the child FP/Media state. */ ret = 0; if (copy_from_user(&child->thread.user->f, (void *) data, sizeof(child->thread.user->f))) ret = -EFAULT; break; } case PTRACE_GETFDPIC: tmp = 0; switch (addr) { case PTRACE_GETFDPIC_EXEC: tmp = child->mm->context.exec_fdpic_loadmap; break; case PTRACE_GETFDPIC_INTERP: tmp = child->mm->context.interp_fdpic_loadmap; break; default: break; } ret = 0; if (put_user(tmp, (unsigned long *) data)) { ret = -EFAULT; break; } break; default: ret = -EIO; break; } return ret; }
long arch_ptrace(struct task_struct *child, long request, long addr, long data) { int ret; unsigned long __user *datap = (unsigned long __user *)data; void *paddr = (void *)addr; switch (request) { /* when I and D space are separate, these will need to be fixed. */ case PTRACE_PEEKDATA: pr_debug("ptrace: PEEKDATA\n"); /* fall through */ case PTRACE_PEEKTEXT: /* read word at location addr. */ { unsigned long tmp = 0; int copied = 0, to_copy = sizeof(tmp); ret = -EIO; pr_debug("ptrace: PEEKTEXT at addr 0x%08lx + %i\n", addr, to_copy); if (is_user_addr_valid(child, addr, to_copy) < 0) break; pr_debug("ptrace: user address is valid\n"); switch (bfin_mem_access_type(addr, to_copy)) { case BFIN_MEM_ACCESS_CORE: case BFIN_MEM_ACCESS_CORE_ONLY: copied = access_process_vm(child, addr, &tmp, to_copy, 0); if (copied) break; /* hrm, why didn't that work ... maybe no mapping */ if (addr >= FIXED_CODE_START && addr + to_copy <= FIXED_CODE_END) { copy_from_user_page(0, 0, 0, &tmp, paddr, to_copy); copied = to_copy; } else if (addr >= BOOT_ROM_START) { memcpy(&tmp, paddr, to_copy); copied = to_copy; } break; case BFIN_MEM_ACCESS_DMA: if (safe_dma_memcpy(&tmp, paddr, to_copy)) copied = to_copy; break; case BFIN_MEM_ACCESS_ITEST: if (isram_memcpy(&tmp, paddr, to_copy)) copied = to_copy; break; default: copied = 0; break; } pr_debug("ptrace: copied size %d [0x%08lx]\n", copied, tmp); if (copied == to_copy) ret = put_user(tmp, datap); break; } /* when I and D space are separate, this will have to be fixed. */ case PTRACE_POKEDATA: pr_debug("ptrace: PTRACE_PEEKDATA\n"); /* fall through */ case PTRACE_POKETEXT: /* write the word at location addr. */ { int copied = 0, to_copy = sizeof(data); ret = -EIO; pr_debug("ptrace: POKETEXT at addr 0x%08lx + %i bytes %lx\n", addr, to_copy, data); if (is_user_addr_valid(child, addr, to_copy) < 0) break; pr_debug("ptrace: user address is valid\n"); switch (bfin_mem_access_type(addr, to_copy)) { case BFIN_MEM_ACCESS_CORE: case BFIN_MEM_ACCESS_CORE_ONLY: copied = access_process_vm(child, addr, &data, to_copy, 1); break; case BFIN_MEM_ACCESS_DMA: if (safe_dma_memcpy(paddr, &data, to_copy)) copied = to_copy; break; case BFIN_MEM_ACCESS_ITEST: if (isram_memcpy(paddr, &data, to_copy)) copied = to_copy; break; default: copied = 0; break; } pr_debug("ptrace: copied size %d\n", copied); if (copied == to_copy) ret = 0; break; } case PTRACE_PEEKUSR: switch (addr) { #ifdef CONFIG_BINFMT_ELF_FDPIC /* backwards compat */ case PT_FDPIC_EXEC: request = PTRACE_GETFDPIC; addr = PTRACE_GETFDPIC_EXEC; goto case_default; case PT_FDPIC_INTERP: request = PTRACE_GETFDPIC; addr = PTRACE_GETFDPIC_INTERP; goto case_default; #endif default: ret = get_reg(child, addr, datap); } pr_debug("ptrace: PEEKUSR reg %li with %#lx = %i\n", addr, data, ret); break; case PTRACE_POKEUSR: ret = put_reg(child, addr, data); pr_debug("ptrace: POKEUSR reg %li with %li = %i\n", addr, data, ret); break; case PTRACE_GETREGS: pr_debug("ptrace: PTRACE_GETREGS\n"); return copy_regset_to_user(child, &user_bfin_native_view, REGSET_GENERAL, 0, sizeof(struct pt_regs), (void __user *)data); case PTRACE_SETREGS: pr_debug("ptrace: PTRACE_SETREGS\n"); return copy_regset_from_user(child, &user_bfin_native_view, REGSET_GENERAL, 0, sizeof(struct pt_regs), (const void __user *)data); case_default: default: ret = ptrace_request(child, request, addr, data); break; } return ret; }
long arch_ptrace(struct task_struct *child, long request, unsigned long addr, unsigned long data) { int ret; unsigned long __user *datap = (unsigned long __user *)data; void *paddr = (void *)addr; switch (request) { case PTRACE_PEEKDATA: pr_debug("ptrace: PEEKDATA\n"); case PTRACE_PEEKTEXT: { unsigned long tmp = 0; int copied = 0, to_copy = sizeof(tmp); ret = -EIO; pr_debug("ptrace: PEEKTEXT at addr 0x%08lx + %i\n", addr, to_copy); if (is_user_addr_valid(child, addr, to_copy) < 0) break; pr_debug("ptrace: user address is valid\n"); switch (bfin_mem_access_type(addr, to_copy)) { case BFIN_MEM_ACCESS_CORE: case BFIN_MEM_ACCESS_CORE_ONLY: copied = access_process_vm(child, addr, &tmp, to_copy, 0); if (copied) break; if (addr >= FIXED_CODE_START && addr + to_copy <= FIXED_CODE_END) { copy_from_user_page(0, 0, 0, &tmp, paddr, to_copy); copied = to_copy; } else if (addr >= BOOT_ROM_START) { memcpy(&tmp, paddr, to_copy); copied = to_copy; } break; case BFIN_MEM_ACCESS_DMA: if (safe_dma_memcpy(&tmp, paddr, to_copy)) copied = to_copy; break; case BFIN_MEM_ACCESS_ITEST: if (isram_memcpy(&tmp, paddr, to_copy)) copied = to_copy; break; default: copied = 0; break; } pr_debug("ptrace: copied size %d [0x%08lx]\n", copied, tmp); if (copied == to_copy) ret = put_user(tmp, datap); break; } case PTRACE_POKEDATA: pr_debug("ptrace: PTRACE_PEEKDATA\n"); case PTRACE_POKETEXT: { int copied = 0, to_copy = sizeof(data); ret = -EIO; pr_debug("ptrace: POKETEXT at addr 0x%08lx + %i bytes %lx\n", addr, to_copy, data); if (is_user_addr_valid(child, addr, to_copy) < 0) break; pr_debug("ptrace: user address is valid\n"); switch (bfin_mem_access_type(addr, to_copy)) { case BFIN_MEM_ACCESS_CORE: case BFIN_MEM_ACCESS_CORE_ONLY: copied = access_process_vm(child, addr, &data, to_copy, 1); break; case BFIN_MEM_ACCESS_DMA: if (safe_dma_memcpy(paddr, &data, to_copy)) copied = to_copy; break; case BFIN_MEM_ACCESS_ITEST: if (isram_memcpy(paddr, &data, to_copy)) copied = to_copy; break; default: copied = 0; break; } pr_debug("ptrace: copied size %d\n", copied); if (copied == to_copy) ret = 0; break; } case PTRACE_PEEKUSR: switch (addr) { #ifdef CONFIG_BINFMT_ELF_FDPIC case PT_FDPIC_EXEC: request = PTRACE_GETFDPIC; addr = PTRACE_GETFDPIC_EXEC; goto case_default; case PT_FDPIC_INTERP: request = PTRACE_GETFDPIC; addr = PTRACE_GETFDPIC_INTERP; goto case_default; #endif default: ret = get_reg(child, addr, datap); } pr_debug("ptrace: PEEKUSR reg %li with %#lx = %i\n", addr, data, ret); break; case PTRACE_POKEUSR: ret = put_reg(child, addr, data); pr_debug("ptrace: POKEUSR reg %li with %li = %i\n", addr, data, ret); break; case PTRACE_GETREGS: pr_debug("ptrace: PTRACE_GETREGS\n"); return copy_regset_to_user(child, &user_bfin_native_view, REGSET_GENERAL, 0, sizeof(struct pt_regs), datap); case PTRACE_SETREGS: pr_debug("ptrace: PTRACE_SETREGS\n"); return copy_regset_from_user(child, &user_bfin_native_view, REGSET_GENERAL, 0, sizeof(struct pt_regs), datap); case_default: default: ret = ptrace_request(child, request, addr, data); break; } return ret; }