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Diffstat (limited to 'arch/ia64/ia32/ia32_traps.c')
-rw-r--r--arch/ia64/ia32/ia32_traps.c156
1 files changed, 0 insertions, 156 deletions
diff --git a/arch/ia64/ia32/ia32_traps.c b/arch/ia64/ia32/ia32_traps.c
deleted file mode 100644
index e486042672f1..000000000000
--- a/arch/ia64/ia32/ia32_traps.c
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- * IA-32 exception handlers
- *
- * Copyright (C) 2000 Asit K. Mallick <asit.k.mallick@intel.com>
- * Copyright (C) 2001-2002 Hewlett-Packard Co
- * David Mosberger-Tang <davidm@hpl.hp.com>
- *
- * 06/16/00 A. Mallick added siginfo for most cases (close to IA32)
- * 09/29/00 D. Mosberger added ia32_intercept()
- */
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-
-#include "ia32priv.h"
-
-#include <asm/intrinsics.h>
-#include <asm/ptrace.h>
-
-int
-ia32_intercept (struct pt_regs *regs, unsigned long isr)
-{
- switch ((isr >> 16) & 0xff) {
- case 0: /* Instruction intercept fault */
- case 4: /* Locked Data reference fault */
- case 1: /* Gate intercept trap */
- return -1;
-
- case 2: /* System flag trap */
- if (((isr >> 14) & 0x3) >= 2) {
- /* MOV SS, POP SS instructions */
- ia64_psr(regs)->id = 1;
- return 0;
- } else
- return -1;
- }
- return -1;
-}
-
-int
-ia32_exception (struct pt_regs *regs, unsigned long isr)
-{
- struct siginfo siginfo;
-
- /* initialize these fields to avoid leaking kernel bits to user space: */
- siginfo.si_errno = 0;
- siginfo.si_flags = 0;
- siginfo.si_isr = 0;
- siginfo.si_imm = 0;
- switch ((isr >> 16) & 0xff) {
- case 1:
- case 2:
- siginfo.si_signo = SIGTRAP;
- if (isr == 0)
- siginfo.si_code = TRAP_TRACE;
- else if (isr & 0x4)
- siginfo.si_code = TRAP_BRANCH;
- else
- siginfo.si_code = TRAP_BRKPT;
- break;
-
- case 3:
- siginfo.si_signo = SIGTRAP;
- siginfo.si_code = TRAP_BRKPT;
- break;
-
- case 0: /* Divide fault */
- siginfo.si_signo = SIGFPE;
- siginfo.si_code = FPE_INTDIV;
- break;
-
- case 4: /* Overflow */
- case 5: /* Bounds fault */
- siginfo.si_signo = SIGFPE;
- siginfo.si_code = 0;
- break;
-
- case 6: /* Invalid Op-code */
- siginfo.si_signo = SIGILL;
- siginfo.si_code = ILL_ILLOPN;
- break;
-
- case 7: /* FP DNA */
- case 8: /* Double Fault */
- case 9: /* Invalid TSS */
- case 11: /* Segment not present */
- case 12: /* Stack fault */
- case 13: /* General Protection Fault */
- siginfo.si_signo = SIGSEGV;
- siginfo.si_code = 0;
- break;
-
- case 16: /* Pending FP error */
- {
- unsigned long fsr, fcr;
-
- fsr = ia64_getreg(_IA64_REG_AR_FSR);
- fcr = ia64_getreg(_IA64_REG_AR_FCR);
-
- siginfo.si_signo = SIGFPE;
- /*
- * (~cwd & swd) will mask out exceptions that are not set to unmasked
- * status. 0x3f is the exception bits in these regs, 0x200 is the
- * C1 reg you need in case of a stack fault, 0x040 is the stack
- * fault bit. We should only be taking one exception at a time,
- * so if this combination doesn't produce any single exception,
- * then we have a bad program that isn't synchronizing its FPU usage
- * and it will suffer the consequences since we won't be able to
- * fully reproduce the context of the exception
- */
- siginfo.si_isr = isr;
- siginfo.si_flags = __ISR_VALID;
- switch(((~fcr) & (fsr & 0x3f)) | (fsr & 0x240)) {
- case 0x000:
- default:
- siginfo.si_code = 0;
- break;
- case 0x001: /* Invalid Op */
- case 0x040: /* Stack Fault */
- case 0x240: /* Stack Fault | Direction */
- siginfo.si_code = FPE_FLTINV;
- break;
- case 0x002: /* Denormalize */
- case 0x010: /* Underflow */
- siginfo.si_code = FPE_FLTUND;
- break;
- case 0x004: /* Zero Divide */
- siginfo.si_code = FPE_FLTDIV;
- break;
- case 0x008: /* Overflow */
- siginfo.si_code = FPE_FLTOVF;
- break;
- case 0x020: /* Precision */
- siginfo.si_code = FPE_FLTRES;
- break;
- }
-
- break;
- }
-
- case 17: /* Alignment check */
- siginfo.si_signo = SIGSEGV;
- siginfo.si_code = BUS_ADRALN;
- break;
-
- case 19: /* SSE Numeric error */
- siginfo.si_signo = SIGFPE;
- siginfo.si_code = 0;
- break;
-
- default:
- return -1;
- }
- force_sig_info(siginfo.si_signo, &siginfo, current);
- return 0;
-}