Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 295 insertions, 0 deletions

diff --git a/arch/frv/kernel/entry-table.S b/arch/frv/kernel/entry-table.S
new file mode 100644
index 00000000000..9b9243e2103
--- /dev/null
+++ b/arch/frv/kernel/entry-table.S
@@ -0,0 +1,295 @@
+/* entry-table.S: main trap vector tables and exception jump table
+ *
+ * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ *
+ */
+
+#include <linux/sys.h>
+#include <linux/config.h>
+#include <linux/linkage.h>
+#include <asm/spr-regs.h>
+
+###############################################################################
+#
+# Declare the main trap and vector tables
+#
+# There are six tables:
+#
+# (1) The trap table for debug mode
+# (2) The trap table for kernel mode
+# (3) The trap table for user mode
+#
+#     The CPU jumps to an appropriate slot in the appropriate table to perform
+#     exception processing. We have three different tables for the three
+#     different CPU modes because there is no hardware differentiation between
+#     stack pointers for these three modes, and so we have to invent one when
+#     crossing mode boundaries.
+#
+# (4) The exception handler vector table
+#
+#     The user and kernel trap tables use the same prologue for normal
+#     exception processing. The prologue then jumps to the handler in this
+#     table, as indexed by the exception ID from the TBR.
+#
+# (5) The fixup table for kernel-trap single-step
+# (6) The fixup table for user-trap single-step
+#
+#     Due to the way single-stepping works on this CPU (single-step is not
+#     disabled when crossing exception boundaries, only when in debug mode),
+#     we have to catch the single-step event in break.S and jump to the fixup
+#     routine pointed to by this table.
+#
+# The linker script places the user mode and kernel mode trap tables on to
+# the same 8Kb page, so that break.S can be more efficient when performing
+# single-step bypass management
+#
+###############################################################################
+
+	# trap table for entry from debug mode
+	.section	.trap.break,"ax"
+	.balign		256*16
+	.globl		__entry_breaktrap_table
+__entry_breaktrap_table:
+
+	# trap table for entry from user mode
+	.section	.trap.user,"ax"
+	.balign		256*16
+	.globl		__entry_usertrap_table
+__entry_usertrap_table:
+
+	# trap table for entry from kernel mode
+	.section	.trap.kernel,"ax"
+	.balign		256*16
+	.globl		__entry_kerneltrap_table
+__entry_kerneltrap_table:
+
+	# exception handler jump table
+	.section	.trap.vector,"ax"
+	.balign		256*4
+	.globl		__entry_vector_table
+__entry_vector_table:
+
+	# trap fixup table for single-stepping in user mode
+	.section	.trap.fixup.user,"a"
+	.balign		256*4
+	.globl		__break_usertrap_fixup_table
+__break_usertrap_fixup_table:
+
+	# trap fixup table for single-stepping in user mode
+	.section	.trap.fixup.kernel,"a"
+	.balign		256*4
+	.globl		__break_kerneltrap_fixup_table
+__break_kerneltrap_fixup_table:
+
+	# handler declaration for a sofware or program interrupt
+.macro VECTOR_SOFTPROG tbr_tt, vec
+	.section .trap.user
+	.org		\tbr_tt
+	bra		__entry_uspace_softprog_interrupt
+	.section .trap.fixup.user
+	.org		\tbr_tt >> 2
+	.long		__break_step_uspace_softprog_interrupt
+	.section .trap.kernel
+	.org		\tbr_tt
+	bra		__entry_kernel_softprog_interrupt
+	.section .trap.fixup.kernel
+	.org		\tbr_tt >> 2
+	.long		__break_step_kernel_softprog_interrupt
+	.section .trap.vector
+	.org		\tbr_tt >> 2
+	.long		\vec
+.endm
+
+	# handler declaration for a maskable external interrupt
+.macro VECTOR_IRQ tbr_tt, vec
+	.section .trap.user
+	.org		\tbr_tt
+	bra		__entry_uspace_external_interrupt
+	.section .trap.fixup.user
+	.org		\tbr_tt >> 2
+	.long		__break_step_uspace_external_interrupt
+	.section .trap.kernel
+	.org		\tbr_tt
+	bra		__entry_kernel_external_interrupt
+	.section .trap.fixup.kernel
+	.org		\tbr_tt >> 2
+	.long		__break_step_kernel_external_interrupt
+	.section .trap.vector
+	.org		\tbr_tt >> 2
+	.long		\vec
+.endm
+
+	# handler declaration for an NMI external interrupt
+.macro VECTOR_NMI tbr_tt, vec
+	.section .trap.user
+	.org		\tbr_tt
+	break
+	break
+	break
+	break
+	.section .trap.kernel
+	.org		\tbr_tt
+	break
+	break
+	break
+	break
+	.section .trap.vector
+	.org		\tbr_tt >> 2
+	.long		\vec
+.endm
+
+	# handler declaration for an MMU only sofware or program interrupt
+.macro VECTOR_SP_MMU tbr_tt, vec
+#ifdef CONFIG_MMU
+ 	VECTOR_SOFTPROG	\tbr_tt, \vec
+#else
+	VECTOR_NMI	\tbr_tt, 0
+#endif
+.endm
+
+
+###############################################################################
+#
+# specification of the vectors
+# - note: each macro inserts code into multiple sections
+#
+###############################################################################
+	VECTOR_SP_MMU	TBR_TT_INSTR_MMU_MISS,	__entry_insn_mmu_miss
+	VECTOR_SOFTPROG	TBR_TT_INSTR_ACC_ERROR,	__entry_insn_access_error
+	VECTOR_SOFTPROG	TBR_TT_INSTR_ACC_EXCEP,	__entry_insn_access_exception
+	VECTOR_SOFTPROG	TBR_TT_PRIV_INSTR,	__entry_privileged_instruction
+	VECTOR_SOFTPROG	TBR_TT_ILLEGAL_INSTR,	__entry_illegal_instruction
+	VECTOR_SOFTPROG	TBR_TT_FP_EXCEPTION,	__entry_media_exception
+	VECTOR_SOFTPROG	TBR_TT_MP_EXCEPTION,	__entry_media_exception
+	VECTOR_SOFTPROG	TBR_TT_DATA_ACC_ERROR,	__entry_data_access_error
+	VECTOR_SP_MMU	TBR_TT_DATA_MMU_MISS,	__entry_data_mmu_miss
+	VECTOR_SOFTPROG	TBR_TT_DATA_ACC_EXCEP,	__entry_data_access_exception
+	VECTOR_SOFTPROG	TBR_TT_DATA_STR_ERROR,	__entry_data_store_error
+	VECTOR_SOFTPROG	TBR_TT_DIVISION_EXCEP,	__entry_division_exception
+
+#ifdef CONFIG_MMU
+	.section .trap.user
+	.org		TBR_TT_INSTR_TLB_MISS
+	.globl		__trap_user_insn_tlb_miss
+__trap_user_insn_tlb_miss:
+	movsg		ear0,gr28			/* faulting address */
+	movsg		scr0,gr31			/* get mapped PTD coverage start address */
+	xor.p		gr28,gr31,gr31			/* compare addresses */
+	bra		__entry_user_insn_tlb_miss
+
+	.org		TBR_TT_DATA_TLB_MISS
+	.globl		__trap_user_data_tlb_miss
+__trap_user_data_tlb_miss:
+	movsg		ear0,gr28			/* faulting address */
+	movsg		scr1,gr31			/* get mapped PTD coverage start address */
+	xor.p		gr28,gr31,gr31			/* compare addresses */
+	bra		__entry_user_data_tlb_miss
+
+	.section .trap.kernel
+	.org		TBR_TT_INSTR_TLB_MISS
+	.globl		__trap_kernel_insn_tlb_miss
+__trap_kernel_insn_tlb_miss:
+	movsg		ear0,gr29			/* faulting address */
+	movsg		scr0,gr31			/* get mapped PTD coverage start address */
+	xor.p		gr29,gr31,gr31			/* compare addresses */
+	bra		__entry_kernel_insn_tlb_miss
+
+	.org		TBR_TT_DATA_TLB_MISS
+	.globl		__trap_kernel_data_tlb_miss
+__trap_kernel_data_tlb_miss:
+	movsg		ear0,gr29			/* faulting address */
+	movsg		scr1,gr31			/* get mapped PTD coverage start address */
+	xor.p		gr29,gr31,gr31			/* compare addresses */
+	bra		__entry_kernel_data_tlb_miss
+
+	.section .trap.fixup.user
+	.org		TBR_TT_INSTR_TLB_MISS >> 2
+	.globl		__trap_fixup_user_insn_tlb_miss
+__trap_fixup_user_insn_tlb_miss:
+	.long		__break_user_insn_tlb_miss
+	.org		TBR_TT_DATA_TLB_MISS >> 2
+	.globl		__trap_fixup_user_data_tlb_miss
+__trap_fixup_user_data_tlb_miss:
+	.long		__break_user_data_tlb_miss
+
+	.section .trap.fixup.kernel
+	.org		TBR_TT_INSTR_TLB_MISS >> 2
+	.globl		__trap_fixup_kernel_insn_tlb_miss
+__trap_fixup_kernel_insn_tlb_miss:
+	.long		__break_kernel_insn_tlb_miss
+	.org		TBR_TT_DATA_TLB_MISS >> 2
+	.globl		__trap_fixup_kernel_data_tlb_miss
+__trap_fixup_kernel_data_tlb_miss:
+	.long		__break_kernel_data_tlb_miss
+
+	.section .trap.vector
+	.org		TBR_TT_INSTR_TLB_MISS >> 2
+	.long		__entry_insn_mmu_fault
+	.org		TBR_TT_DATA_TLB_MISS >> 2
+	.long		__entry_data_mmu_fault
+#endif
+
+	VECTOR_SP_MMU	TBR_TT_DATA_DAT_EXCEP,	__entry_data_dat_fault
+	VECTOR_NMI	TBR_TT_DECREMENT_TIMER,	__entry_do_NMI
+	VECTOR_SOFTPROG	TBR_TT_COMPOUND_EXCEP,	__entry_compound_exception
+	VECTOR_IRQ	TBR_TT_INTERRUPT_1,	__entry_do_IRQ
+	VECTOR_IRQ	TBR_TT_INTERRUPT_2,	__entry_do_IRQ
+	VECTOR_IRQ	TBR_TT_INTERRUPT_3,	__entry_do_IRQ
+	VECTOR_IRQ	TBR_TT_INTERRUPT_4,	__entry_do_IRQ
+	VECTOR_IRQ	TBR_TT_INTERRUPT_5,	__entry_do_IRQ
+	VECTOR_IRQ	TBR_TT_INTERRUPT_6,	__entry_do_IRQ
+	VECTOR_IRQ	TBR_TT_INTERRUPT_7,	__entry_do_IRQ
+	VECTOR_IRQ	TBR_TT_INTERRUPT_8,	__entry_do_IRQ
+	VECTOR_IRQ	TBR_TT_INTERRUPT_9,	__entry_do_IRQ
+	VECTOR_IRQ	TBR_TT_INTERRUPT_10,	__entry_do_IRQ
+	VECTOR_IRQ	TBR_TT_INTERRUPT_11,	__entry_do_IRQ
+	VECTOR_IRQ	TBR_TT_INTERRUPT_12,	__entry_do_IRQ
+	VECTOR_IRQ	TBR_TT_INTERRUPT_13,	__entry_do_IRQ
+	VECTOR_IRQ	TBR_TT_INTERRUPT_14,	__entry_do_IRQ
+	VECTOR_NMI	TBR_TT_INTERRUPT_15,	__entry_do_NMI
+
+	# miscellaneous user mode entry points
+	.section	.trap.user
+	.org		TBR_TT_TRAP0
+	.rept		127
+	bra		__entry_uspace_softprog_interrupt
+	bra		__break_step_uspace_softprog_interrupt
+	.long		0,0
+	.endr
+	.org		TBR_TT_BREAK
+	bra		__entry_break
+	.long		0,0,0
+
+	# miscellaneous kernel mode entry points
+	.section	.trap.kernel
+	.org		TBR_TT_TRAP0
+	.rept		127
+	bra		__entry_kernel_softprog_interrupt
+	bra		__break_step_kernel_softprog_interrupt
+	.long		0,0
+	.endr
+	.org		TBR_TT_BREAK
+	bra		__entry_break
+	.long		0,0,0
+
+	# miscellaneous debug mode entry points
+	.section	.trap.break
+	.org		TBR_TT_BREAK
+	movsg		bpcsr,gr30
+	jmpl		@(gr30,gr0)
+
+	# miscellaneous vectors
+	.section	.trap.vector
+	.org		TBR_TT_TRAP0 >> 2
+	.long		system_call
+	.rept		126
+	.long		__entry_unsupported_trap
+	.endr
+	.org		TBR_TT_BREAK >> 2
+	.long		__entry_debug_exception