^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * License. See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 1992 Ross Biro
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) Linus Torvalds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 1994, 95, 96, 97, 98, 2000 Ralf Baechle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (C) 1996 David S. Miller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Copyright (C) 1999 MIPS Technologies, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Copyright (C) 2000 Ulf Carlsson
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * At this time Linux/MIPS64 only supports syscall tracing, even for 32-bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * binaries.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/compiler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/compat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/sched/task_stack.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/smp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/security.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <asm/cpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <asm/dsp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <asm/fpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <asm/mipsregs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <asm/mipsmtregs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <asm/page.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <asm/reg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <asm/syscall.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #include <asm/bootinfo.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * Tracing a 32-bit process with a 64-bit strace and vice versa will not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) * work. I don't know how to fix this.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) compat_ulong_t caddr, compat_ulong_t cdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) int addr = caddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) int data = cdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) switch (request) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * Read 4 bytes of the other process' storage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * data is a pointer specifying where the user wants the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * 4 bytes copied into
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * addr is a pointer in the user's storage that contains an 8 byte
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * address in the other process of the 4 bytes that is to be read
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * (this is run in a 32-bit process looking at a 64-bit process)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * when I and D space are separate, these will need to be fixed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) case PTRACE_PEEKTEXT_3264:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) case PTRACE_PEEKDATA_3264: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) u32 tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int copied;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) u32 __user * addrOthers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* Get the addr in the other process that we want to read */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) if (get_user(addrOthers, (u32 __user * __user *) (unsigned long) addr) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) copied = ptrace_access_vm(child, (u64)addrOthers, &tmp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) sizeof(tmp), FOLL_FORCE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (copied != sizeof(tmp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) ret = put_user(tmp, (u32 __user *) (unsigned long) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /* Read the word at location addr in the USER area. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) case PTRACE_PEEKUSR: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) struct pt_regs *regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) unsigned int tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) regs = task_pt_regs(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) ret = 0; /* Default return value. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) switch (addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) case 0 ... 31:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) tmp = regs->regs[addr];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #ifdef CONFIG_MIPS_FP_SUPPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) case FPR_BASE ... FPR_BASE + 31: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) union fpureg *fregs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (!tsk_used_math(child)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) /* FP not yet used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) tmp = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) fregs = get_fpu_regs(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (test_tsk_thread_flag(child, TIF_32BIT_FPREGS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) * The odd registers are actually the high
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * order bits of the values stored in the even
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * registers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) tmp = get_fpr32(&fregs[(addr & ~1) - FPR_BASE],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) addr & 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) tmp = get_fpr64(&fregs[addr - FPR_BASE], 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) case FPC_CSR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) tmp = child->thread.fpu.fcr31;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) case FPC_EIR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) /* implementation / version register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) tmp = boot_cpu_data.fpu_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) #endif /* CONFIG_MIPS_FP_SUPPORT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) case PC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) tmp = regs->cp0_epc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) case CAUSE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) tmp = regs->cp0_cause;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) case BADVADDR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) tmp = regs->cp0_badvaddr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) case MMHI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) tmp = regs->hi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) case MMLO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) tmp = regs->lo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) case DSP_BASE ... DSP_BASE + 5: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) dspreg_t *dregs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (!cpu_has_dsp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) tmp = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) dregs = __get_dsp_regs(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) tmp = dregs[addr - DSP_BASE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) case DSP_CONTROL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (!cpu_has_dsp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) tmp = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) tmp = child->thread.dsp.dspcontrol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) tmp = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) ret = put_user(tmp, (unsigned __user *) (unsigned long) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * Write 4 bytes into the other process' storage
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * data is the 4 bytes that the user wants written
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * addr is a pointer in the user's storage that contains an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * 8 byte address in the other process where the 4 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * that is to be written
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * (this is run in a 32-bit process looking at a 64-bit process)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * when I and D space are separate, these will need to be fixed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) case PTRACE_POKETEXT_3264:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) case PTRACE_POKEDATA_3264: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) u32 __user * addrOthers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) /* Get the addr in the other process that we want to write into */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) if (get_user(addrOthers, (u32 __user * __user *) (unsigned long) addr) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if (ptrace_access_vm(child, (u64)addrOthers, &data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) sizeof(data),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) FOLL_FORCE | FOLL_WRITE) == sizeof(data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) case PTRACE_POKEUSR: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) struct pt_regs *regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) regs = task_pt_regs(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) switch (addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) case 0 ... 31:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) regs->regs[addr] = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) /* System call number may have been changed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) if (addr == 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) mips_syscall_update_nr(child, regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) else if (addr == 4 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) mips_syscall_is_indirect(child, regs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) mips_syscall_update_nr(child, regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) #ifdef CONFIG_MIPS_FP_SUPPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) case FPR_BASE ... FPR_BASE + 31: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) union fpureg *fregs = get_fpu_regs(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (!tsk_used_math(child)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) /* FP not yet used */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) memset(&child->thread.fpu, ~0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) sizeof(child->thread.fpu));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) child->thread.fpu.fcr31 = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (test_tsk_thread_flag(child, TIF_32BIT_FPREGS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * The odd registers are actually the high
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * order bits of the values stored in the even
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * registers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) set_fpr32(&fregs[(addr & ~1) - FPR_BASE],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) addr & 1, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) set_fpr64(&fregs[addr - FPR_BASE], 0, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) case FPC_CSR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) child->thread.fpu.fcr31 = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) #endif /* CONFIG_MIPS_FP_SUPPORT */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) case PC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) regs->cp0_epc = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) case MMHI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) regs->hi = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) case MMLO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) regs->lo = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) case DSP_BASE ... DSP_BASE + 5: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) dspreg_t *dregs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) if (!cpu_has_dsp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) dregs = __get_dsp_regs(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) dregs[addr - DSP_BASE] = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) case DSP_CONTROL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) if (!cpu_has_dsp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) child->thread.dsp.dspcontrol = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) /* The rest are not allowed. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) case PTRACE_GETREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) ret = ptrace_getregs(child,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) (struct user_pt_regs __user *) (__u64) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) case PTRACE_SETREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) ret = ptrace_setregs(child,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) (struct user_pt_regs __user *) (__u64) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) #ifdef CONFIG_MIPS_FP_SUPPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) case PTRACE_GETFPREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) ret = ptrace_getfpregs(child, (__u32 __user *) (__u64) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) case PTRACE_SETFPREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) ret = ptrace_setfpregs(child, (__u32 __user *) (__u64) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) case PTRACE_GET_THREAD_AREA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) ret = put_user(task_thread_info(child)->tp_value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) (unsigned int __user *) (unsigned long) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) case PTRACE_GET_THREAD_AREA_3264:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) ret = put_user(task_thread_info(child)->tp_value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) (unsigned long __user *) (unsigned long) data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) case PTRACE_GET_WATCH_REGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) ret = ptrace_get_watch_regs(child,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) (struct pt_watch_regs __user *) (unsigned long) addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) case PTRACE_SET_WATCH_REGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) ret = ptrace_set_watch_regs(child,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) (struct pt_watch_regs __user *) (unsigned long) addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) ret = compat_ptrace_request(child, request, addr, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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