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Diffstat (limited to 'libgloss/or1k/util.c')
-rw-r--r-- | libgloss/or1k/util.c | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/libgloss/or1k/util.c b/libgloss/or1k/util.c deleted file mode 100644 index 74071719e..000000000 --- a/libgloss/or1k/util.c +++ /dev/null @@ -1,83 +0,0 @@ -/* util.c -- Utility functions for OpenRISC 1000. - * - * Copyright (c) 2014 Authors - * - * Contributor Julius Baxter <julius.baxter@orsoc.se> - * Contributor Stefan Wallentowitz <stefan.wallentowitz@tum.de> - * - * The authors hereby grant permission to use, copy, modify, distribute, - * and license this software and its documentation for any purpose, provided - * that existing copyright notices are retained in all copies and that this - * notice is included verbatim in any distributions. No written agreement, - * license, or royalty fee is required for any of the authorized uses. - * Modifications to this software may be copyrighted by their authors - * and need not follow the licensing terms described here, provided that - * the new terms are clearly indicated on the first page of each file where - * they apply. - */ - -#include <stdint.h> -#include <stddef.h> -#include <reent.h> - -#include "or1k-internals.h" - -#ifdef __OR1K_MULTICORE__ -uint32_t* *_or1k_stack_core; -uint32_t* *_or1k_exception_stack_core; -#endif - -uint32_t* _or1k_stack_top; -uint32_t* _or1k_stack_bottom; - -uint32_t* _or1k_exception_stack_top; -uint32_t* _or1k_exception_stack_bottom; - -void _or1k_init() { -#ifdef __OR1K_MULTICORE__ - uint32_t c; - - // Initialize stacks - _or1k_stack_core = _sbrk_r(0, sizeof(uint32_t*) * or1k_numcores()); - _or1k_exception_stack_core = _sbrk_r(0, sizeof(uint32_t*) * or1k_numcores()); - - _or1k_stack_core[0] = _or1k_stack_top; - _or1k_exception_stack_core[0] = _or1k_exception_stack_top; - - for (c = 1; c < or1k_numcores(); c++) { - _or1k_stack_core[c] = _or1k_stack_core[c-1] - _or1k_stack_size; - _or1k_exception_stack_core[c] = _or1k_exception_stack_core[c-1] - - _or1k_exception_stack_size; - } - - size_t exc_size = sizeof(void*) * or1k_numcores() * OR1K_NUM_EXCEPTIONS; - _or1k_exception_handler_table = _sbrk_r(0, exc_size); - - size_t int_size = sizeof(void*) * or1k_numcores() * 32; - size_t intdata_size = sizeof(void*) * or1k_numcores() * 32; - _or1k_interrupt_handler_table = _sbrk_r(0, int_size); - _or1k_interrupt_handler_data_ptr_table = _sbrk_r(0, intdata_size); -#endif - - _or1k_reent_init(); - -#ifdef __OR1K_MULTICORE__ - for (c = 0; c < or1k_numcores(); c++) { - _or1k_exception_handler_table[c][6] = _or1k_interrupt_handler; - } -#else - _or1k_exception_handler_table[6] = _or1k_interrupt_handler; -#endif -} - -uint32_t or1k_critical_begin() { - uint32_t iee = or1k_interrupts_disable(); - uint32_t tee = or1k_timer_disable(); - return (iee << 1) | tee; -} - -void or1k_critical_end(uint32_t restore) { - or1k_timer_restore(restore & 0x1); - or1k_interrupts_restore((restore >> 1) & 0x1); -} - |