^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * PowerPC version
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Derived from "arch/m68k/kernel/ptrace.c"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 1994 by Hamish Macdonald
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Taken from linux/kernel/ptrace.c and modified for M680x0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Modified by Cort Dougan (cort@hq.fsmlabs.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * and Paul Mackerras (paulus@samba.org).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * This file is subject to the terms and conditions of the GNU General
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Public License. See the file README.legal in the main directory of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * this archive for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/regset.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/tracehook.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/audit.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/context_tracking.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/syscalls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <asm/switch_to.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <asm/asm-prototypes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <asm/debug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #define CREATE_TRACE_POINTS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <trace/events/syscalls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include "ptrace-decl.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * Called by kernel/ptrace.c when detaching..
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * Make sure single step bits etc are not set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) void ptrace_disable(struct task_struct *child)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /* make sure the single step bit is not set. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) user_disable_single_step(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) long arch_ptrace(struct task_struct *child, long request,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) unsigned long addr, unsigned long data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) int ret = -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) void __user *datavp = (void __user *) data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) unsigned long __user *datalp = datavp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) switch (request) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) /* read the word at location addr in the USER area. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) case PTRACE_PEEKUSR: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) unsigned long index, tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /* convert to index and check */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #ifdef CONFIG_PPC32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) index = addr >> 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if ((addr & 3) || (index > PT_FPSCR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) || (child->thread.regs == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) index = addr >> 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if ((addr & 7) || (index > PT_FPSCR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) CHECK_FULL_REGS(child->thread.regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if (index < PT_FPR0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) ret = ptrace_get_reg(child, (int) index, &tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) unsigned int fpidx = index - PT_FPR0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) flush_fp_to_thread(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) if (fpidx < (PT_FPSCR - PT_FPR0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) memcpy(&tmp, &child->thread.TS_FPR(fpidx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) sizeof(long));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) tmp = child->thread.fp_state.fpscr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) ret = put_user(tmp, datalp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) /* write the word at location addr in the USER area */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) case PTRACE_POKEUSR: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) unsigned long index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) /* convert to index and check */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #ifdef CONFIG_PPC32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) index = addr >> 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) if ((addr & 3) || (index > PT_FPSCR)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) || (child->thread.regs == NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) index = addr >> 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) if ((addr & 7) || (index > PT_FPSCR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) CHECK_FULL_REGS(child->thread.regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) if (index < PT_FPR0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) ret = ptrace_put_reg(child, index, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) unsigned int fpidx = index - PT_FPR0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) flush_fp_to_thread(child);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) if (fpidx < (PT_FPSCR - PT_FPR0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) memcpy(&child->thread.TS_FPR(fpidx), &data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) sizeof(long));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) child->thread.fp_state.fpscr = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) case PPC_PTRACE_GETHWDBGINFO: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct ppc_debug_info dbginfo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) ppc_gethwdinfo(&dbginfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) if (copy_to_user(datavp, &dbginfo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) sizeof(struct ppc_debug_info)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) case PPC_PTRACE_SETHWDEBUG: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct ppc_hw_breakpoint bp_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) if (copy_from_user(&bp_info, datavp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) sizeof(struct ppc_hw_breakpoint)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) return ppc_set_hwdebug(child, &bp_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) case PPC_PTRACE_DELHWDEBUG: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) ret = ppc_del_hwdebug(child, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) case PTRACE_GET_DEBUGREG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) ret = ptrace_get_debugreg(child, addr, datalp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) case PTRACE_SET_DEBUGREG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) ret = ptrace_set_debugreg(child, addr, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) #ifdef CONFIG_PPC64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) case PTRACE_GETREGS64:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) case PTRACE_GETREGS: /* Get all pt_regs from the child. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) return copy_regset_to_user(child, &user_ppc_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) REGSET_GPR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 0, sizeof(struct user_pt_regs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) datavp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #ifdef CONFIG_PPC64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) case PTRACE_SETREGS64:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) case PTRACE_SETREGS: /* Set all gp regs in the child. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) return copy_regset_from_user(child, &user_ppc_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) REGSET_GPR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 0, sizeof(struct user_pt_regs),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) datavp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) case PTRACE_GETFPREGS: /* Get the child FPU state (FPR0...31 + FPSCR) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) return copy_regset_to_user(child, &user_ppc_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) REGSET_FPR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 0, sizeof(elf_fpregset_t),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) datavp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) case PTRACE_SETFPREGS: /* Set the child FPU state (FPR0...31 + FPSCR) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) return copy_regset_from_user(child, &user_ppc_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) REGSET_FPR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 0, sizeof(elf_fpregset_t),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) datavp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) #ifdef CONFIG_ALTIVEC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) case PTRACE_GETVRREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) return copy_regset_to_user(child, &user_ppc_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) REGSET_VMX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 0, (33 * sizeof(vector128) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) sizeof(u32)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) datavp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) case PTRACE_SETVRREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return copy_regset_from_user(child, &user_ppc_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) REGSET_VMX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 0, (33 * sizeof(vector128) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) sizeof(u32)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) datavp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) #ifdef CONFIG_VSX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) case PTRACE_GETVSRREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) return copy_regset_to_user(child, &user_ppc_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) REGSET_VSX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 0, 32 * sizeof(double),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) datavp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) case PTRACE_SETVSRREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) return copy_regset_from_user(child, &user_ppc_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) REGSET_VSX,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 0, 32 * sizeof(double),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) datavp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) #ifdef CONFIG_SPE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) case PTRACE_GETEVRREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) /* Get the child spe register state. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return copy_regset_to_user(child, &user_ppc_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) REGSET_SPE, 0, 35 * sizeof(u32),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) datavp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) case PTRACE_SETEVRREGS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) /* Set the child spe register state. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return copy_regset_from_user(child, &user_ppc_native_view,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) REGSET_SPE, 0, 35 * sizeof(u32),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) datavp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) ret = ptrace_request(child, request, addr, 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) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) #ifdef CONFIG_SECCOMP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) static int do_seccomp(struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) if (!test_thread_flag(TIF_SECCOMP))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * The ABI we present to seccomp tracers is that r3 contains
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) * the syscall return value and orig_gpr3 contains the first
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) * syscall parameter. This is different to the ptrace ABI where
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) * both r3 and orig_gpr3 contain the first syscall parameter.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) regs->gpr[3] = -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) * We use the __ version here because we have already checked
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * TIF_SECCOMP. If this fails, there is nothing left to do, we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) * have already loaded -ENOSYS into r3, or seccomp has put
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) * something else in r3 (via SECCOMP_RET_ERRNO/TRACE).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) if (__secure_computing(NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) * The syscall was allowed by seccomp, restore the register
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) * state to what audit expects.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) * Note that we use orig_gpr3, which means a seccomp tracer can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) * modify the first syscall parameter (in orig_gpr3) and also
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) * allow the syscall to proceed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) regs->gpr[3] = regs->orig_gpr3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) static inline int do_seccomp(struct pt_regs *regs) { return 0; }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) #endif /* CONFIG_SECCOMP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * do_syscall_trace_enter() - Do syscall tracing on kernel entry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) * @regs: the pt_regs of the task to trace (current)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) * Performs various types of tracing on syscall entry. This includes seccomp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * ptrace, syscall tracepoints and audit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * The pt_regs are potentially visible to userspace via ptrace, so their
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) * contents is ABI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) * One or more of the tracers may modify the contents of pt_regs, in particular
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) * to modify arguments or even the syscall number itself.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * It's also possible that a tracer can choose to reject the system call. In
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) * that case this function will return an illegal syscall number, and will put
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * an appropriate return value in regs->r3.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * Return: the (possibly changed) syscall number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) long do_syscall_trace_enter(struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) user_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) flags = READ_ONCE(current_thread_info()->flags) &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) (_TIF_SYSCALL_EMU | _TIF_SYSCALL_TRACE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) if (flags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) int rc = tracehook_report_syscall_entry(regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) if (unlikely(flags & _TIF_SYSCALL_EMU)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) * A nonzero return code from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) * tracehook_report_syscall_entry() tells us to prevent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) * the syscall execution, but we are not going to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) * execute it anyway.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) * Returning -1 will skip the syscall execution. We want
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) * to avoid clobbering any registers, so we don't goto
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) * the skip label below.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) * The tracer decided to abort the syscall. Note that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * the tracer may also just change regs->gpr[0] to an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) * invalid syscall number, that is handled below on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) * exit path.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) goto skip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) /* Run seccomp after ptrace; allow it to set gpr[3]. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) if (do_seccomp(regs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) /* Avoid trace and audit when syscall is invalid. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) if (regs->gpr[0] >= NR_syscalls)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) goto skip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) trace_sys_enter(regs, regs->gpr[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (!is_32bit_task())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) audit_syscall_entry(regs->gpr[0], regs->gpr[3], regs->gpr[4],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) regs->gpr[5], regs->gpr[6]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) audit_syscall_entry(regs->gpr[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) regs->gpr[3] & 0xffffffff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) regs->gpr[4] & 0xffffffff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) regs->gpr[5] & 0xffffffff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) regs->gpr[6] & 0xffffffff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) /* Return the possibly modified but valid syscall number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) return regs->gpr[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) skip:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) * If we are aborting explicitly, or if the syscall number is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) * now invalid, set the return value to -ENOSYS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) regs->gpr[3] = -ENOSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) void do_syscall_trace_leave(struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) int step;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) audit_syscall_exit(regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) trace_sys_exit(regs, regs->result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) step = test_thread_flag(TIF_SINGLESTEP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) if (step || test_thread_flag(TIF_SYSCALL_TRACE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) tracehook_report_syscall_exit(regs, step);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) user_enter();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) void __init pt_regs_check(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) * Dummy function, its purpose is to break the build if struct pt_regs and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) * struct user_pt_regs don't match.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) void __init pt_regs_check(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) BUILD_BUG_ON(offsetof(struct pt_regs, gpr) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) offsetof(struct user_pt_regs, gpr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) BUILD_BUG_ON(offsetof(struct pt_regs, nip) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) offsetof(struct user_pt_regs, nip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) BUILD_BUG_ON(offsetof(struct pt_regs, msr) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) offsetof(struct user_pt_regs, msr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) BUILD_BUG_ON(offsetof(struct pt_regs, msr) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) offsetof(struct user_pt_regs, msr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) BUILD_BUG_ON(offsetof(struct pt_regs, orig_gpr3) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) offsetof(struct user_pt_regs, orig_gpr3));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) BUILD_BUG_ON(offsetof(struct pt_regs, ctr) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) offsetof(struct user_pt_regs, ctr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) BUILD_BUG_ON(offsetof(struct pt_regs, link) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) offsetof(struct user_pt_regs, link));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) BUILD_BUG_ON(offsetof(struct pt_regs, xer) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) offsetof(struct user_pt_regs, xer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) BUILD_BUG_ON(offsetof(struct pt_regs, ccr) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) offsetof(struct user_pt_regs, ccr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) #ifdef __powerpc64__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) BUILD_BUG_ON(offsetof(struct pt_regs, softe) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) offsetof(struct user_pt_regs, softe));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) BUILD_BUG_ON(offsetof(struct pt_regs, mq) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) offsetof(struct user_pt_regs, mq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) BUILD_BUG_ON(offsetof(struct pt_regs, trap) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) offsetof(struct user_pt_regs, trap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) BUILD_BUG_ON(offsetof(struct pt_regs, dar) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) offsetof(struct user_pt_regs, dar));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) BUILD_BUG_ON(offsetof(struct pt_regs, dsisr) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) offsetof(struct user_pt_regs, dsisr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) BUILD_BUG_ON(offsetof(struct pt_regs, result) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) offsetof(struct user_pt_regs, result));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) BUILD_BUG_ON(sizeof(struct user_pt_regs) > sizeof(struct pt_regs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) // Now check that the pt_regs offsets match the uapi #defines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) #define CHECK_REG(_pt, _reg) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) BUILD_BUG_ON(_pt != (offsetof(struct user_pt_regs, _reg) / \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) sizeof(unsigned long)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) CHECK_REG(PT_R0, gpr[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) CHECK_REG(PT_R1, gpr[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) CHECK_REG(PT_R2, gpr[2]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) CHECK_REG(PT_R3, gpr[3]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) CHECK_REG(PT_R4, gpr[4]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) CHECK_REG(PT_R5, gpr[5]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) CHECK_REG(PT_R6, gpr[6]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) CHECK_REG(PT_R7, gpr[7]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) CHECK_REG(PT_R8, gpr[8]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) CHECK_REG(PT_R9, gpr[9]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) CHECK_REG(PT_R10, gpr[10]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) CHECK_REG(PT_R11, gpr[11]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) CHECK_REG(PT_R12, gpr[12]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) CHECK_REG(PT_R13, gpr[13]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) CHECK_REG(PT_R14, gpr[14]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) CHECK_REG(PT_R15, gpr[15]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) CHECK_REG(PT_R16, gpr[16]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) CHECK_REG(PT_R17, gpr[17]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) CHECK_REG(PT_R18, gpr[18]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) CHECK_REG(PT_R19, gpr[19]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) CHECK_REG(PT_R20, gpr[20]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) CHECK_REG(PT_R21, gpr[21]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) CHECK_REG(PT_R22, gpr[22]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) CHECK_REG(PT_R23, gpr[23]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) CHECK_REG(PT_R24, gpr[24]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) CHECK_REG(PT_R25, gpr[25]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) CHECK_REG(PT_R26, gpr[26]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) CHECK_REG(PT_R27, gpr[27]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) CHECK_REG(PT_R28, gpr[28]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) CHECK_REG(PT_R29, gpr[29]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) CHECK_REG(PT_R30, gpr[30]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) CHECK_REG(PT_R31, gpr[31]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) CHECK_REG(PT_NIP, nip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) CHECK_REG(PT_MSR, msr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) CHECK_REG(PT_ORIG_R3, orig_gpr3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) CHECK_REG(PT_CTR, ctr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) CHECK_REG(PT_LNK, link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) CHECK_REG(PT_XER, xer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) CHECK_REG(PT_CCR, ccr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) #ifdef CONFIG_PPC64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) CHECK_REG(PT_SOFTE, softe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) CHECK_REG(PT_MQ, mq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) CHECK_REG(PT_TRAP, trap);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) CHECK_REG(PT_DAR, dar);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) CHECK_REG(PT_DSISR, dsisr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) CHECK_REG(PT_RESULT, result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) #undef CHECK_REG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) BUILD_BUG_ON(PT_REGS_COUNT != sizeof(struct user_pt_regs) / sizeof(unsigned long));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * PT_DSCR isn't a real reg, but it's important that it doesn't overlap the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) * real registers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) BUILD_BUG_ON(PT_DSCR < sizeof(struct user_pt_regs) / sizeof(unsigned long));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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