diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/mcp750/vectors')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mcp750/vectors/vectors.S | 154 | ||||
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mcp750/vectors/vectors.h | 144 | ||||
| -rw-r--r-- | c/src/lib/libbsp/powerpc/mcp750/vectors/vectors_init.c | 122 |
3 files changed, 0 insertions, 420 deletions
diff --git a/c/src/lib/libbsp/powerpc/mcp750/vectors/vectors.S b/c/src/lib/libbsp/powerpc/mcp750/vectors/vectors.S deleted file mode 100644 index fca0cbfac1..0000000000 --- a/c/src/lib/libbsp/powerpc/mcp750/vectors/vectors.S +++ /dev/null @@ -1,154 +0,0 @@ -/* - * (c) 1999, Eric Valette valette@crf.canon.fr - * - * - * This file contains the assembly code for the PowerPC - * exception veneers for RTEMS. - * - * $Id$ - */ - - - -#include <bsp/vectors.h> -#include <libcpu/cpu.h> -#include <rtems/score/targopts.h> -#include "asm.h" - - -#define SYNC \ - sync; \ - isync - - PUBLIC_VAR (__rtems_start) - .section .entry_point_section,"awx",@progbits -/* - * Entry point information used by bootloader code - */ -SYM (__rtems_start): - .long __rtems_entry_point - - /* - * end of special Entry point section - */ - .text - .p2align 5 - -PUBLIC_VAR(default_exception_vector_code_prolog) -SYM (default_exception_vector_code_prolog): - /* - * let room for exception frame - */ - stwu r1, - (EXCEPTION_FRAME_END)(r1) - stw r3, GPR3_OFFSET(r1) - stw r2, GPR2_OFFSET(r1) - mflr r2 - stw r2, EXC_LR_OFFSET(r1) - bl 0f -0: /* - * r3 = exception vector entry point - * (256 * vector number) + few instructions - */ - mflr r3 - /* - * r3 = r3 >> 8 = vector - */ - srwi r3,r3,8 - ba push_normalized_frame - - PUBLIC_VAR (default_exception_vector_code_prolog_size) - - default_exception_vector_code_prolog_size= . - default_exception_vector_code_prolog - - .p2align 5 -PUBLIC_VAR (push_normalized_frame) -SYM (push_normalized_frame): - stw r3, EXCEPTION_NUMBER_OFFSET(r1) - stw r0, GPR0_OFFSET(r1) - mfsrr0 r2 - stw r2, SRR0_FRAME_OFFSET(r1) - mfsrr1 r3 - stw r3, SRR1_FRAME_OFFSET(r1) - /* - * Save general purpose registers - * Already saved in prolog : R1, R2, R3, LR. - * Saved a few line above : R0 - * - * Manual says that "stmw" instruction may be slower than - * series of individual "stw" but who cares about performance - * for the DEFAULT exception handler? - */ - stmw r4, GPR4_OFFSET(r1) /* save R4->R31 */ - - mfcr r31 - stw r31, EXC_CR_OFFSET(r1) - mfctr r30 - stw r30, EXC_CTR_OFFSET(r1) - mfxer r28 - stw r28, EXC_XER_OFFSET(r1) - /* - * compute SP at exception entry - */ - addi r2, r1, EXCEPTION_FRAME_END - /* - * store it at the right place - */ - stw r2, GPR1_OFFSET(r1) - /* - * Enable data and instruction address translation, exception nesting - */ - mfmsr r3 - ori r3,r3, MSR_RI | MSR_IR | MSR_DR - mtmsr r3 - SYNC - - /* - * Call C exception handler - */ - /* - * store the execption frame address in r3 (first param) - */ - addi r3, r1, 0x8 - /* - * globalExceptHdl(r3) - */ - addis r4, 0, globalExceptHdl@ha - lwz r5, globalExceptHdl@l(r4) - mtlr r5 - blrl - /* - * Restore registers status - */ - lwz r31, EXC_CR_OFFSET(r1) - mtcr r31 - lwz r30, EXC_CTR_OFFSET(r1) - mtctr r30 - lwz r29, EXC_LR_OFFSET(r1) - mtlr r29 - lwz r28, EXC_XER_OFFSET(r1) - mtxer r28 - - lmw r4, GPR4_OFFSET(r1) - lwz r2, GPR2_OFFSET(r1) - lwz r0, GPR0_OFFSET(r1) - - /* - * Disable data and instruction translation. Make path non recoverable... - */ - mfmsr r3 - xori r3, r3, MSR_RI | MSR_IR | MSR_DR - mtmsr r3 - SYNC - /* - * Restore rfi related settings - */ - - lwz r3, SRR1_FRAME_OFFSET(r1) - mtsrr1 r3 - lwz r3, SRR0_FRAME_OFFSET(r1) - mtsrr0 r3 - - lwz r3, GPR3_OFFSET(r1) - addi r1,r1, EXCEPTION_FRAME_END - SYNC - rfi diff --git a/c/src/lib/libbsp/powerpc/mcp750/vectors/vectors.h b/c/src/lib/libbsp/powerpc/mcp750/vectors/vectors.h deleted file mode 100644 index 101f46f121..0000000000 --- a/c/src/lib/libbsp/powerpc/mcp750/vectors/vectors.h +++ /dev/null @@ -1,144 +0,0 @@ -/* - * vectors.h Exception frame related contant and API. - * - * This include file describe the data structure and the functions implemented - * by rtems to handle exceptions. - * - * CopyRight (C) 1999 valette@crf.canon.fr - * - * The license and distribution terms for this file may be - * found in found in the file LICENSE in this distribution or at - * http://www.OARcorp.com/rtems/license.html. - * - * $Id$ - */ -#ifndef LIBBSP_POWERPC_MCP750_VECTORS_H -#define LIBBSP_POWERPC_MCP750_VECTORS_H - -/* - * The callee (high level exception code written in C) - * will store the Link Registers (return address) at entry r1 + 4 !!!. - * So let room for it!!!. - */ -#define LINK_REGISTER_CALLEE_UPDATE_ROOM 4 -#define SRR0_FRAME_OFFSET 8 -#define SRR1_FRAME_OFFSET 12 -#define EXCEPTION_NUMBER_OFFSET 16 -#define GPR0_OFFSET 20 -#define GPR1_OFFSET 24 -#define GPR2_OFFSET 28 -#define GPR3_OFFSET 32 -#define GPR4_OFFSET 36 -#define GPR5_OFFSET 40 -#define GPR6_OFFSET 44 -#define GPR7_OFFSET 48 -#define GPR8_OFFSET 52 -#define GPR9_OFFSET 56 -#define GPR10_OFFSET 60 -#define GPR11_OFFSET 64 -#define GPR12_OFFSET 68 -#define GPR13_OFFSET 72 -#define GPR14_OFFSET 76 -#define GPR15_OFFSET 80 -#define GPR16_OFFSET 84 -#define GPR17_OFFSET 88 -#define GPR18_OFFSET 92 -#define GPR19_OFFSET 96 -#define GPR20_OFFSET 100 -#define GPR21_OFFSET 104 -#define GPR22_OFFSET 108 -#define GPR23_OFFSET 112 -#define GPR24_OFFSET 116 -#define GPR25_OFFSET 120 -#define GPR26_OFFSET 124 -#define GPR27_OFFSET 128 -#define GPR28_OFFSET 132 -#define GPR29_OFFSET 136 -#define GPR30_OFFSET 140 -#define GPR31_OFFSET 144 -#define EXC_CR_OFFSET 148 -#define EXC_CTR_OFFSET 152 -#define EXC_XER_OFFSET 156 -#define EXC_LR_OFFSET 160 -#define EXC_DAR_OFFSET 164 -/* - * maintain the EABI requested 8 bytes aligment - * As SVR4 ABI requires 16, make it 16 (as some - * exception may need more registers to be processed...) - */ -#define EXCEPTION_FRAME_END 176 - -#ifndef ASM -/* - * default raw exception handlers - */ - -extern void default_exception_vector_code_prolog(); -extern int default_exception_vector_code_prolog_size; - -/* codemove is like memmove, but it also gets the cache line size - * as 4th parameter to synchronize them. If this last parameter is - * zero, it performs more or less like memmove. No copy is performed if - * source and destination addresses are equal. However the caches - * are synchronized. Note that the size is always rounded up to the - * next mutiple of 4. - */ -extern void * codemove(void *, const void *, unsigned int, unsigned long); -extern void initialize_exceptions(); - -typedef struct { - unsigned EXC_SRR0; - unsigned EXC_SRR1; - unsigned _EXC_number; - unsigned GPR0; - unsigned GPR1; - unsigned GPR2; - unsigned GPR3; - unsigned GPR4; - unsigned GPR5; - unsigned GPR6; - unsigned GPR7; - unsigned GPR8; - unsigned GPR9; - unsigned GPR10; - unsigned GPR11; - unsigned GPR12; - unsigned GPR13; - unsigned GPR14; - unsigned GPR15; - unsigned GPR16; - unsigned GPR17; - unsigned GPR18; - unsigned GPR19; - unsigned GPR20; - unsigned GPR21; - unsigned GPR22; - unsigned GPR23; - unsigned GPR24; - unsigned GPR25; - unsigned GPR26; - unsigned GPR27; - unsigned GPR28; - unsigned GPR29; - unsigned GPR30; - unsigned GPR31; - unsigned EXC_CR; - unsigned EXC_CTR; - unsigned EXC_XER; - unsigned EXC_LR; - unsigned EXC_MSR; - unsigned EXC_DAR; -}BSP_Exception_frame; - - -typedef void (*exception_handler_t) (BSP_Exception_frame* excPtr); -extern exception_handler_t globalExceptHdl; -/* - * Compatibility with pc386 - */ -typedef BSP_Exception_frame CPU_Exception_frame; -typedef exception_handler_t cpuExcHandlerType; - -#endif /* ASM */ - -#endif /* LIBBSP_POWERPC_MCP750_VECTORS_H */ diff --git a/c/src/lib/libbsp/powerpc/mcp750/vectors/vectors_init.c b/c/src/lib/libbsp/powerpc/mcp750/vectors/vectors_init.c deleted file mode 100644 index 7310fbd2c5..0000000000 --- a/c/src/lib/libbsp/powerpc/mcp750/vectors/vectors_init.c +++ /dev/null @@ -1,122 +0,0 @@ -/* - * vectors_init.c Exception hanlding initialisation (and generic handler). - * - * This include file describe the data structure and the functions implemented - * by rtems to handle exceptions. - * - * CopyRight (C) 1999 valette@crf.canon.fr - * - * The license and distribution terms for this file may be - * found in found in the file LICENSE in this distribution or at - * http://www.OARcorp.com/rtems/license.html. - * - * $Id$ - */ -#include <bsp/vectors.h> -#include <libcpu/raw_exception.h> -#include <bsp.h> - -static rtems_raw_except_global_settings exception_config; -static rtems_raw_except_connect_data exception_table[LAST_VALID_EXC + 1]; - -exception_handler_t globalExceptHdl; - -void C_exception_handler(BSP_Exception_frame* excPtr) -{ - int recoverable = 0; - - printk("exception handler called for exception %d\n", excPtr->_EXC_number); - printk("\t Next PC or Address of fault = %x\n", excPtr->EXC_SRR0); - printk("\t Saved MSR = %x\n", excPtr->EXC_SRR1); - printk("\t R0 = %x\n", excPtr->GPR0); - printk("\t R1 = %x\n", excPtr->GPR1); - printk("\t R2 = %x\n", excPtr->GPR2); - printk("\t R3 = %x\n", excPtr->GPR3); - printk("\t R4 = %x\n", excPtr->GPR4); - printk("\t R5 = %x\n", excPtr->GPR5); - printk("\t R6 = %x\n", excPtr->GPR6); - printk("\t R7 = %x\n", excPtr->GPR7); - printk("\t R8 = %x\n", excPtr->GPR8); - printk("\t R9 = %x\n", excPtr->GPR9); - printk("\t R10 = %x\n", excPtr->GPR10); - printk("\t R11 = %x\n", excPtr->GPR11); - printk("\t R12 = %x\n", excPtr->GPR12); - printk("\t R13 = %x\n", excPtr->GPR13); - printk("\t R14 = %x\n", excPtr->GPR14); - printk("\t R15 = %x\n", excPtr->GPR15); - printk("\t R16 = %x\n", excPtr->GPR16); - printk("\t R17 = %x\n", excPtr->GPR17); - printk("\t R18 = %x\n", excPtr->GPR18); - printk("\t R19 = %x\n", excPtr->GPR19); - printk("\t R20 = %x\n", excPtr->GPR20); - printk("\t R21 = %x\n", excPtr->GPR21); - printk("\t R22 = %x\n", excPtr->GPR22); - printk("\t R23 = %x\n", excPtr->GPR23); - printk("\t R24 = %x\n", excPtr->GPR24); - printk("\t R25 = %x\n", excPtr->GPR25); - printk("\t R26 = %x\n", excPtr->GPR26); - printk("\t R27 = %x\n", excPtr->GPR27); - printk("\t R28 = %x\n", excPtr->GPR28); - printk("\t R29 = %x\n", excPtr->GPR29); - printk("\t R30 = %x\n", excPtr->GPR30); - printk("\t R31 = %x\n", excPtr->GPR31); - printk("\t CR = %x\n", excPtr->EXC_CR); - printk("\t CTR = %x\n", excPtr->EXC_CTR); - printk("\t XER = %x\n", excPtr->EXC_XER); - printk("\t LR = %x\n", excPtr->EXC_LR); - printk("\t MSR = %x\n", excPtr->EXC_MSR); - if ( (excPtr->_EXC_number == ASM_DEC_VECTOR) || - (excPtr->_EXC_number == ASM_SYS_VECTOR) - ) - recoverable = 1; - if (!recoverable) BSP_panic("unrecoverable exception!!! Push reset button\n"); -} - -void nop_except_enable(const rtems_raw_except_connect_data* ptr) -{ -} -int except_always_enabled(const rtems_raw_except_connect_data* ptr) -{ - return 1; -} - -void initialize_exceptions() -{ - int i; - - /* - * Initialize pointer used by low level execption handling - */ - globalExceptHdl = C_exception_handler; - /* - * Put default_exception_vector_code_prolog at relevant exception - * code entry addresses - */ - exception_config.exceptSize = LAST_VALID_EXC + 1; - exception_config.rawExceptHdlTbl = &exception_table[0]; - exception_config.defaultRawEntry.exceptIndex = 0; - exception_config.defaultRawEntry.hdl.vector = 0; - exception_config.defaultRawEntry.hdl.raw_hdl = default_exception_vector_code_prolog; - /* - * Note that next line the '&' before default_exception_vector_code_prolog_size - * is not a bug as it is defined a .set directly in asm... - */ - exception_config.defaultRawEntry.hdl.raw_hdl_size = (unsigned) &default_exception_vector_code_prolog_size; - for (i=0; i <= exception_config.exceptSize; i++) { - if (!mpc750_vector_is_valid (i)) { - continue; - } - exception_table[i].exceptIndex = i; - exception_table[i].hdl = exception_config.defaultRawEntry.hdl; - exception_table[i].hdl.vector = i; - exception_table[i].on = nop_except_enable; - exception_table[i].off = nop_except_enable; - exception_table[i].isOn = except_always_enabled; - } - if (!mpc60x_init_exceptions(&exception_config)) { - BSP_panic("Exception handling initialization failed\n"); - } - else { - printk("Exception handling initialization done\n"); - } -} |