/kernel/trunk/arch/sparc64/include/trap_table.h |
---|
0,0 → 1,51 |
/* |
* Copyright (C) 2005 Jakub Jermar |
* All rights reserved. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* |
* - Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* - Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* - The name of the author may not be used to endorse or promote products |
* derived from this software without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
*/ |
#ifndef __sparc64_TRAP_TABLE_H__ |
#define __sparc64_TRAP_TABLE_H__ |
#ifndef __ASM__ |
#include <arch/types.h> |
#endif /* __ASM__ */ |
#define TRAP_TABLE_ENTRY_COUNT 1024 |
#define TRAP_TABLE_ENTRY_SIZE 32 |
#define TRAP_TABLE_SIZE (TRAP_TABLE_ENTRY_COUNT*TRAP_TABLE_ENTRY_SIZE) |
#ifndef __ASM__ |
struct trap_table_entry { |
__u8 octets[TRAP_TABLE_ENTRY_SIZE]; |
} __attribute__ ((packed)); |
typedef struct trap_table_entry trap_table_entry_t; |
extern trap_table_entry_t trap_table[TRAP_TABLE_ENTRY_COUNT]; |
extern trap_table_entry_t trap_table_kernel[TRAP_TABLE_ENTRY_COUNT]; |
#endif /* __ASM__ */ |
#endif |
/kernel/trunk/arch/sparc64/include/asm.h |
---|
85,6 → 85,29 |
return v; |
} |
/** Read Trap Base Address register. |
* |
* @return Current value in TBA. |
*/ |
static inline __u64 tba_read(void) |
{ |
__u64 v; |
__asm__ volatile ("rdpr %%tba, %0\n" : "=r" (v)); |
return v; |
} |
/** Write Trap Base Address register. |
* |
* @param New value of TBA. |
*/ |
static inline void tba_write(__u64 v) |
{ |
__asm__ volatile ("wrpr %0, %1, %%tba\n" : : "r" (v), "i" (0)); |
} |
void cpu_halt(void); |
void cpu_sleep(void); |
void asm_delay_loop(__u32 t); |
/kernel/trunk/arch/sparc64/Makefile.inc |
---|
54,4 → 54,5 |
arch/$(ARCH)/src/mm/frame.c \ |
arch/$(ARCH)/src/mm/page.c \ |
arch/$(ARCH)/src/sparc64.c \ |
arch/$(ARCH)/src/start.S |
arch/$(ARCH)/src/start.S \ |
arch/$(ARCH)/src/trap_table.S |
/kernel/trunk/arch/sparc64/src/sparc64.c |
---|
27,6 → 27,10 |
*/ |
#include <arch.h> |
#include <print.h> |
#include <arch/asm.h> |
#include <memstr.h> |
#include <arch/trap_table.h> |
void arch_pre_mm_init(void) |
{ |
38,6 → 42,14 |
void arch_pre_smp_init(void) |
{ |
/* |
* Copy OFW's trap table into kernel and point TBA there. |
*/ |
memcpy((void *) trap_table, (void *) tba_read(), TRAP_TABLE_SIZE); |
/* |
* TBA cannot be changed until there are means of getting it into TLB. |
* tba_write((__u64) trap_table); |
*/ |
} |
void arch_post_smp_init(void) |
/kernel/trunk/arch/sparc64/src/context.S |
---|
31,12 → 31,10 |
/** |
* Both context_save_arch() and context_restore_arch() are |
* leaf-optimized procedures. Both of them touch %sp and |
* %fp and thus break SCD 2.4 compliance. However, these |
* functions are special enough to be allowed this |
* kind of behavior. Moreover, this kind of optimization |
* is very important and prevents any window spill/ |
* fill/clean traps in these very core kernel functions. |
* leaf-optimized procedures. This kind of optimization |
* is very important and prevents any implicit window |
* spill/fill/clean traps in these very core kernel |
* functions. |
*/ |
.text |
/kernel/trunk/arch/sparc64/src/start.S |
---|
51,10 → 51,9 |
1: |
set ofw, %l0 |
stx %o4, [%l0] |
call ofw_init |
nop |
stx %o4, [%l0] |
call main_bsp |
nop |
/kernel/trunk/arch/sparc64/src/trap_table.S |
---|
0,0 → 1,100 |
# |
# Copyright (C) 2005 Jakub Jermar |
# All rights reserved. |
# |
# Redistribution and use in source and binary forms, with or without |
# modification, are permitted provided that the following conditions |
# are met: |
# |
# - Redistributions of source code must retain the above copyright |
# notice, this list of conditions and the following disclaimer. |
# - Redistributions in binary form must reproduce the above copyright |
# notice, this list of conditions and the following disclaimer in the |
# documentation and/or other materials provided with the distribution. |
# - The name of the author may not be used to endorse or promote products |
# derived from this software without specific prior written permission. |
# |
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
# |
/** |
* This file contains two trap tables. First, trap_table, is the one |
* to wich kernel copies OFW's own trap table and patches it with |
* kernel-provided handlers from the second trap table, trap_table_kernel. |
*/ |
.text |
#include <arch/trap_table.h> |
#define TABLE_SIZE TRAP_TABLE_SIZE |
#define ENTRY_SIZE TRAP_TABLE_ENTRY_SIZE |
/* |
* Trap table for copy of OFW's own trap table. |
*/ |
.align TABLE_SIZE |
.global trap_table |
trap_table: |
.space TABLE_SIZE, 0 |
/* |
* Kernel-provided trap handlers. |
*/ |
.global trap_table_kernel |
trap_table_kernel: |
/* |
* Hardware interrupts for TL=0. |
*/ |
.org trap_table_kernel + 0*ENTRY_SIZE |
tl_0_hardware_traps: |
/* |
* Register window spill/fill/clean traps for TL=0. |
*/ |
.org trap_table_kernel + 128*ENTRY_SIZE |
tl_0_regwin_traps: |
/* |
* Software traps for TL=0. |
*/ |
.org trap_table_kernel + 256*ENTRY_SIZE |
tl_0_software_traps: |
/* Reserved area. */ |
.org trap_table_kernel + 384*ENTRY_SIZE |
.space 128*ENTRY_SIZE, 0 |
/* |
* Hardware interrupts for TL>0. |
*/ |
.org trap_table_kernel + 512*ENTRY_SIZE |
tl_non_0_hardware_traps: |
/* |
* Register window spill/fill/clean traps for TL>0. |
*/ |
.org trap_table_kernel + 640*ENTRY_SIZE |
tl_non_0_regwin_traps: |
/* |
* Software traps for TL>0. |
*/ |
.org trap_table_kernel + 768*ENTRY_SIZE |
tl_non_0_software_traps: |
/* Reserved area. */ |
.org trap_table_kernel + 896*ENTRY_SIZE |
.space 128*ENTRY_SIZE, 0 |