arm64: traps: Pretty-print pstate in register dumps (b7300d4c) · Commits · 戴 / test

arch/arm64/kernel/process.c

+35 −1

Original line number	Diff line number	Diff line
		@@ -170,6 +170,39 @@ void machine_restart(char *cmd)
		while (1);
		}

		static void print_pstate(struct pt_regs *regs)
		{
		u64 pstate = regs->pstate;

		if (compat_user_mode(regs)) {
		printk("pstate: %08llx (%c%c%c%c %c %s %s %c%c%c)\n",
		pstate,
		pstate & COMPAT_PSR_N_BIT ? 'N' : 'n',
		pstate & COMPAT_PSR_Z_BIT ? 'Z' : 'z',
		pstate & COMPAT_PSR_C_BIT ? 'C' : 'c',
		pstate & COMPAT_PSR_V_BIT ? 'V' : 'v',
		pstate & COMPAT_PSR_Q_BIT ? 'Q' : 'q',
		pstate & COMPAT_PSR_T_BIT ? "T32" : "A32",
		pstate & COMPAT_PSR_E_BIT ? "BE" : "LE",
		pstate & COMPAT_PSR_A_BIT ? 'A' : 'a',
		pstate & COMPAT_PSR_I_BIT ? 'I' : 'i',
		pstate & COMPAT_PSR_F_BIT ? 'F' : 'f');
		} else {
		printk("pstate: %08llx (%c%c%c%c %c%c%c%c %cPAN %cUAO)\n",
		pstate,
		pstate & PSR_N_BIT ? 'N' : 'n',
		pstate & PSR_Z_BIT ? 'Z' : 'z',
		pstate & PSR_C_BIT ? 'C' : 'c',
		pstate & PSR_V_BIT ? 'V' : 'v',
		pstate & PSR_D_BIT ? 'D' : 'd',
		pstate & PSR_A_BIT ? 'A' : 'a',
		pstate & PSR_I_BIT ? 'I' : 'i',
		pstate & PSR_F_BIT ? 'F' : 'f',
		pstate & PSR_PAN_BIT ? '+' : '-',
		pstate & PSR_UAO_BIT ? '+' : '-');
		}
		}

		void __show_regs(struct pt_regs *regs)
		{
		int i, top_reg;
		@@ -186,9 +219,10 @@ void __show_regs(struct pt_regs *regs)
		}

		show_regs_print_info(KERN_DEFAULT);
		print_pstate(regs);
		print_symbol("pc : %s\n", regs->pc);
		print_symbol("lr : %s\n", lr);
		printk("sp : %016llx pstate : %08llx\n", sp, regs->pstate);
		printk("sp : %016llx\n", sp);

		i = top_reg;