From: Paul Mackerras Date: Mon, 10 Oct 2005 12:37:57 +0000 (+1000) Subject: powerpc: Reduce the 32/64-bit differences in traps.c X-Git-Tag: v2.6.15-rc1~59^2~208 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8641778049e75c1da66e66441a6d8b7a2069f607;p=linux-2.6 powerpc: Reduce the 32/64-bit differences in traps.c Signed-off-by: Paul Mackerras --- diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index a2e4ad3f5a..6a881e3ea0 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -31,29 +31,33 @@ #include #include #include -#include +#include #include #include #include #include +#include +#include +#include #ifdef CONFIG_PPC32 #include -#include +#include +#endif #ifdef CONFIG_PMAC_BACKLIGHT #include #endif -#include -#endif #ifdef CONFIG_PPC64 +#include #include -#include -#include #include -#include #include #endif +#ifdef CONFIG_PPC64 /* XXX */ +#define _IO_BASE pci_io_base +#endif + #ifdef CONFIG_DEBUGGER int (*__debugger)(struct pt_regs *regs); int (*__debugger_ipi)(struct pt_regs *regs); @@ -277,7 +281,6 @@ static inline int check_io_access(struct pt_regs *regs) } #if defined(CONFIG_4xx) || defined(CONFIG_BOOKE) - /* On 4xx, the reason for the machine check or program exception is in the ESR. */ #define get_reason(regs) ((regs)->dsisr) @@ -296,7 +299,6 @@ static inline int check_io_access(struct pt_regs *regs) #define clear_single_step(regs) (current->thread.dbcr0 &= ~DBCR0_IC) #else - /* On non-4xx, the reason for the machine check or program exception is in the MSR. */ #define get_reason(regs) ((regs)->msr) @@ -475,7 +477,7 @@ void machine_check_exception(struct pt_regs *regs) * additional info, e.g. bus error registers. */ platform_machine_check(regs); -#endif /* CONFIG_PPC32 */ +#endif /* CONFIG_PPC64 */ if (debugger_fault_handler(regs)) return; @@ -486,12 +488,10 @@ void machine_check_exception(struct pt_regs *regs) panic("Unrecoverable Machine check"); } -#ifdef CONFIG_PPC32 void SMIException(struct pt_regs *regs) { die("System Management Interrupt", regs, SIGABRT); } -#endif void unknown_exception(struct pt_regs *regs) { @@ -511,12 +511,10 @@ void instruction_breakpoint_exception(struct pt_regs *regs) _exception(SIGTRAP, regs, TRAP_BRKPT, regs->nip); } -#ifdef CONFIG_PPC32 void RunModeException(struct pt_regs *regs) { _exception(SIGTRAP, regs, 0, 0); } -#endif void __kprobes single_step_exception(struct pt_regs *regs) { @@ -542,7 +540,6 @@ static void emulate_single_step(struct pt_regs *regs) if (single_stepping(regs)) { clear_single_step(regs); _exception(SIGTRAP, regs, TRAP_TRACE, 0); - single_step_exception(regs); } } @@ -587,6 +584,7 @@ static void parse_fpe(struct pt_regs *regs) * There are a couple of ways to do this, either "decode" the instruction * or directly match lots of bits. In this case, matching lots of * bits is faster and easier. + * */ #define INST_MFSPR_PVR 0x7c1f42a6 #define INST_MFSPR_PVR_MASK 0xfc1fffff @@ -597,8 +595,6 @@ static void parse_fpe(struct pt_regs *regs) #define INST_MCRXR 0x7c000400 #define INST_MCRXR_MASK 0x7c0007fe -#ifdef CONFIG_PPC32 - #define INST_STRING 0x7c00042a #define INST_STRING_MASK 0x7c0007fe #define INST_STRING_GEN_MASK 0x7c00067e @@ -674,7 +670,6 @@ static int emulate_string_inst(struct pt_regs *regs, u32 instword) return 0; } -#endif /* CONFIG_PPC32 */ static int emulate_instruction(struct pt_regs *regs) { @@ -701,28 +696,17 @@ static int emulate_instruction(struct pt_regs *regs) /* Emulate the mcrxr insn. */ if ((instword & INST_MCRXR_MASK) == INST_MCRXR) { - unsigned int shift = (instword >> 21) & 0x1c; + int shift = (instword >> 21) & 0x1c; unsigned long msk = 0xf0000000UL >> shift; -#ifdef CONFIG_PPC64 - static int warned; - if (!warned) { - printk(KERN_WARNING - "process %d (%s) uses obsolete 'mcrxr' insn\n", - current->pid, current->comm); - warned = 1; - } -#endif regs->ccr = (regs->ccr & ~msk) | ((regs->xer >> shift) & msk); regs->xer &= ~0xf0000000UL; return 0; } -#ifdef CONFIG_PPC32 /* Emulate load/store string insn. */ if ((instword & INST_STRING_GEN_MASK) == INST_STRING) return emulate_string_inst(regs, instword); -#endif return -EINVAL; } @@ -769,22 +753,18 @@ static int check_bug_trap(struct pt_regs *regs) xmon_printf(KERN_ERR "Badness in %s at %s:%d\n", bug->function, bug->file, bug->line & ~BUG_WARNING_TRAP); -#endif +#endif /* CONFIG_XMON */ printk(KERN_ERR "Badness in %s at %s:%d\n", bug->function, bug->file, bug->line & ~BUG_WARNING_TRAP); -#ifdef CONFIG_PPC32 dump_stack(); -#else - show_stack(current, (void *)regs->gpr[1]); -#endif return 1; } -#if defined(CONFIG_PPC32) && defined(CONFIG_XMON) +#ifdef CONFIG_XMON xmon_printf(KERN_CRIT "kernel BUG in %s at %s:%d!\n", bug->function, bug->file, bug->line); xmon(regs); -#endif +#endif /* CONFIG_XMON */ printk(KERN_CRIT "kernel BUG in %s at %s:%d!\n", bug->function, bug->file, bug->line); @@ -873,7 +853,6 @@ void alignment_exception(struct pt_regs *regs) _exception(SIGBUS, regs, BUS_ADRALN, regs->dar); } -#ifdef CONFIG_PPC32 void StackOverflow(struct pt_regs *regs) { printk(KERN_CRIT "Kernel stack overflow in process %p, r1=%lx\n", @@ -897,7 +876,6 @@ void trace_syscall(struct pt_regs *regs) current, current->pid, regs->nip, regs->link, regs->gpr[0], regs->ccr&0x10000000?"Error=":"", regs->gpr[3], print_tainted()); } -#endif /* CONFIG_PPC32 */ void kernel_fp_unavailable_exception(struct pt_regs *regs) { @@ -963,7 +941,6 @@ void SoftwareEmulation(struct pt_regs *regs) } #endif /* CONFIG_8xx */ -#ifdef CONFIG_PPC32 #if defined(CONFIG_40x) || defined(CONFIG_BOOKE) void DebugException(struct pt_regs *regs, unsigned long debug_status) @@ -992,7 +969,6 @@ void TAUException(struct pt_regs *regs) regs->nip, regs->msr, regs->trap, print_tainted()); } #endif /* CONFIG_INT_TAU */ -#endif /* CONFIG_PPC32*/ #ifdef CONFIG_ALTIVEC void altivec_assist_exception(struct pt_regs *regs)