diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/motorola_powerpc/vectors/vectors.S')
-rw-r--r-- | c/src/lib/libbsp/powerpc/motorola_powerpc/vectors/vectors.S | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/c/src/lib/libbsp/powerpc/motorola_powerpc/vectors/vectors.S b/c/src/lib/libbsp/powerpc/motorola_powerpc/vectors/vectors.S deleted file mode 100644 index fca0cbfac1..0000000000 --- a/c/src/lib/libbsp/powerpc/motorola_powerpc/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 |