Adding upstream version 5.10.209.upstream/5.10.209upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 144 insertions, 0 deletions

diff --git a/arch/m68k/kernel/vectors.c b/arch/m68k/kernel/vectors.c
new file mode 100644
index 000000000..322c977bb
--- /dev/null
+++ b/arch/m68k/kernel/vectors.c
@@ -0,0 +1,144 @@
+/*
+ *  vectors.c
+ *
+ *  Copyright (C) 1993, 1994 by Hamish Macdonald
+ *
+ *  68040 fixes by Michael Rausch
+ *  68040 fixes by Martin Apel
+ *  68040 fixes and writeback by Richard Zidlicky
+ *  68060 fixes by Roman Hodek
+ *  68060 fixes by Jesper Skov
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+/*
+ * Sets up all exception vectors
+ */
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <linux/kallsyms.h>
+
+#include <asm/setup.h>
+#include <asm/fpu.h>
+#include <asm/traps.h>
+
+/* assembler routines */
+asmlinkage void system_call(void);
+asmlinkage void buserr(void);
+asmlinkage void trap(void);
+asmlinkage void nmihandler(void);
+#ifdef CONFIG_M68KFPU_EMU
+asmlinkage void fpu_emu(void);
+#endif
+
+e_vector vectors[256];
+
+/* nmi handler for the Amiga */
+asm(".text\n"
+    __ALIGN_STR "\n"
+    "nmihandler: rte");
+
+/*
+ * this must be called very early as the kernel might
+ * use some instruction that are emulated on the 060
+ * and so we're prepared for early probe attempts (e.g. nf_init).
+ */
+void __init base_trap_init(void)
+{
+	if (MACH_IS_SUN3X) {
+		extern e_vector *sun3x_prom_vbr;
+
+		__asm__ volatile ("movec %%vbr, %0" : "=r" (sun3x_prom_vbr));
+	}
+
+	/* setup the exception vector table */
+	__asm__ volatile ("movec %0,%%vbr" : : "r" ((void*)vectors));
+
+	if (CPU_IS_060) {
+		/* set up ISP entry points */
+		asmlinkage void unimp_vec(void) asm ("_060_isp_unimp");
+
+		vectors[VEC_UNIMPII] = unimp_vec;
+	}
+
+	vectors[VEC_BUSERR] = buserr;
+	vectors[VEC_ILLEGAL] = trap;
+	vectors[VEC_SYS] = system_call;
+}
+
+void __init trap_init (void)
+{
+	int i;
+
+	for (i = VEC_SPUR; i <= VEC_INT7; i++)
+		vectors[i] = bad_inthandler;
+
+	for (i = 0; i < VEC_USER; i++)
+		if (!vectors[i])
+			vectors[i] = trap;
+
+	for (i = VEC_USER; i < 256; i++)
+		vectors[i] = bad_inthandler;
+
+#ifdef CONFIG_M68KFPU_EMU
+	if (FPU_IS_EMU)
+		vectors[VEC_LINE11] = fpu_emu;
+#endif
+
+	if (CPU_IS_040 && !FPU_IS_EMU) {
+		/* set up FPSP entry points */
+		asmlinkage void dz_vec(void) asm ("dz");
+		asmlinkage void inex_vec(void) asm ("inex");
+		asmlinkage void ovfl_vec(void) asm ("ovfl");
+		asmlinkage void unfl_vec(void) asm ("unfl");
+		asmlinkage void snan_vec(void) asm ("snan");
+		asmlinkage void operr_vec(void) asm ("operr");
+		asmlinkage void bsun_vec(void) asm ("bsun");
+		asmlinkage void fline_vec(void) asm ("fline");
+		asmlinkage void unsupp_vec(void) asm ("unsupp");
+
+		vectors[VEC_FPDIVZ] = dz_vec;
+		vectors[VEC_FPIR] = inex_vec;
+		vectors[VEC_FPOVER] = ovfl_vec;
+		vectors[VEC_FPUNDER] = unfl_vec;
+		vectors[VEC_FPNAN] = snan_vec;
+		vectors[VEC_FPOE] = operr_vec;
+		vectors[VEC_FPBRUC] = bsun_vec;
+		vectors[VEC_LINE11] = fline_vec;
+		vectors[VEC_FPUNSUP] = unsupp_vec;
+	}
+
+	if (CPU_IS_060 && !FPU_IS_EMU) {
+		/* set up IFPSP entry points */
+		asmlinkage void snan_vec6(void) asm ("_060_fpsp_snan");
+		asmlinkage void operr_vec6(void) asm ("_060_fpsp_operr");
+		asmlinkage void ovfl_vec6(void) asm ("_060_fpsp_ovfl");
+		asmlinkage void unfl_vec6(void) asm ("_060_fpsp_unfl");
+		asmlinkage void dz_vec6(void) asm ("_060_fpsp_dz");
+		asmlinkage void inex_vec6(void) asm ("_060_fpsp_inex");
+		asmlinkage void fline_vec6(void) asm ("_060_fpsp_fline");
+		asmlinkage void unsupp_vec6(void) asm ("_060_fpsp_unsupp");
+		asmlinkage void effadd_vec6(void) asm ("_060_fpsp_effadd");
+
+		vectors[VEC_FPNAN] = snan_vec6;
+		vectors[VEC_FPOE] = operr_vec6;
+		vectors[VEC_FPOVER] = ovfl_vec6;
+		vectors[VEC_FPUNDER] = unfl_vec6;
+		vectors[VEC_FPDIVZ] = dz_vec6;
+		vectors[VEC_FPIR] = inex_vec6;
+		vectors[VEC_LINE11] = fline_vec6;
+		vectors[VEC_FPUNSUP] = unsupp_vec6;
+		vectors[VEC_UNIMPEA] = effadd_vec6;
+	}
+
+        /* if running on an amiga, make the NMI interrupt do nothing */
+	if (MACH_IS_AMIGA) {
+		vectors[VEC_INT7] = nmihandler;
+	}
+}
+