diff options
Diffstat (limited to 'arch/hexagon/kernel/traps.c')
| -rw-r--r-- | arch/hexagon/kernel/traps.c | 44 |
1 files changed, 23 insertions, 21 deletions
diff --git a/arch/hexagon/kernel/traps.c b/arch/hexagon/kernel/traps.c index be5e2dd9c9d..7858663352b 100644 --- a/arch/hexagon/kernel/traps.c +++ b/arch/hexagon/kernel/traps.c @@ -1,7 +1,7 @@ /* * Kernel traps/events for Hexagon processor * - * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved. + * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -65,6 +65,10 @@ static const char *ex_name(int ex) return "Write protection fault"; case HVM_GE_C_XMAL: return "Misaligned instruction"; + case HVM_GE_C_WREG: + return "Multiple writes to same register in packet"; + case HVM_GE_C_PCAL: + return "Program counter values that are not properly aligned"; case HVM_GE_C_RMAL: return "Misaligned data load"; case HVM_GE_C_WMAL: @@ -191,14 +195,6 @@ void show_stack(struct task_struct *task, unsigned long *fp) do_show_stack(task, fp, 0); } -void dump_stack(void) -{ - unsigned long *fp; - asm("%0 = r30" : "=r" (fp)); - show_stack(current, fp); -} -EXPORT_SYMBOL(dump_stack); - int die(const char *str, struct pt_regs *regs, long err) { static struct { @@ -324,6 +320,12 @@ void do_genex(struct pt_regs *regs) case HVM_GE_C_XMAL: misaligned_instruction(regs); break; + case HVM_GE_C_WREG: + illegal_instruction(regs); + break; + case HVM_GE_C_PCAL: + misaligned_instruction(regs); + break; case HVM_GE_C_RMAL: misaligned_data_load(regs); break; @@ -356,7 +358,6 @@ long sys_syscall(void) void do_trap0(struct pt_regs *regs) { - unsigned long syscallret = 0; syscall_fn syscall; switch (pt_cause(regs)) { @@ -396,21 +397,11 @@ void do_trap0(struct pt_regs *regs) } else { syscall = (syscall_fn) (sys_call_table[regs->syscall_nr]); - syscallret = syscall(regs->r00, regs->r01, + regs->r00 = syscall(regs->r00, regs->r01, regs->r02, regs->r03, regs->r04, regs->r05); } - /* - * If it was a sigreturn system call, don't overwrite - * r0 value in stack frame with return value. - * - * __NR_sigreturn doesn't seem to exist in new unistd.h - */ - - if (regs->syscall_nr != __NR_rt_sigreturn) - regs->r00 = syscallret; - /* allow strace to get the syscall return state */ if (unlikely(test_thread_flag(TIF_SYSCALL_TRACE))) tracehook_report_syscall_exit(regs, 0); @@ -452,3 +443,14 @@ void do_machcheck(struct pt_regs *regs) /* Halt and catch fire */ __vmstop(); } + +/* + * Treat this like the old 0xdb trap. + */ + +void do_debug_exception(struct pt_regs *regs) +{ + regs->hvmer.vmest &= ~HVM_VMEST_CAUSE_MSK; + regs->hvmer.vmest |= (TRAP_DEBUG << HVM_VMEST_CAUSE_SFT); + do_trap0(regs); +} |