| 1 | /*
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| 2 | * sys_get_core.c - get calling core cluster and local index.
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| 3 | *
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| 4 | * Author Alain Greiner (2016,2017)
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| 5 | *
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| 6 | * Copyright (c) UPMC Sorbonne Universites
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| 7 | *
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| 8 | * This file is part of ALMOS-MKH.
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| 9 | *
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| 10 | * ALMOS-MKH is free software; you can redistribute it and/or modify it
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| 11 | * under the terms of the GNU General Public License as published by
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| 12 | * the Free Software Foundation; version 2.0 of the License.
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| 13 | *
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| 14 | * ALMOS-MKH is distributed in the hope that it will be useful, but
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| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 17 | * General Public License for more details.
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| 18 | *
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| 19 | * You should have received a copy of the GNU General Public License
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| 20 | * along with ALMOS-MKH; if not, write to the Free Software Foundation,
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| 21 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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| 22 | */
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| 23 |
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| 24 | #include <hal_kernel_types.h>
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| 25 | #include <hal_uspace.h>
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| 26 | #include <hal_special.h>
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| 27 | #include <errno.h>
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| 28 | #include <core.h>
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| 29 | #include <thread.h>
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| 30 | #include <process.h>
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| 31 | #include <vmm.h>
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| 32 | #include <printk.h>
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| 33 |
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| 34 | #include <syscalls.h>
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| 35 |
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| 36 | /////////////////////////////////
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| 37 | int sys_get_core( uint32_t * cxy,
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| 38 | uint32_t * lid )
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| 39 | {
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| 40 | error_t error;
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| 41 | vseg_t * vseg;
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| 42 | uint32_t k_cxy;
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| 43 | uint32_t k_lid;
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| 44 |
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| 45 | thread_t * this = CURRENT_THREAD;
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| 46 | process_t * process = this->process;
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| 47 |
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| 48 | // check cxy buffer in user space
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| 49 | error = vmm_get_vseg( process , (intptr_t)cxy , &vseg );
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| 50 |
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| 51 | if( error )
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| 52 | {
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| 53 |
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| 54 | #if DEBUG_SYSCALLS_ERROR
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| 55 | printk("\n[ERROR] in %s : cxy buffer unmapped %x / thread %x / process %x\n",
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| 56 | __FUNCTION__ , (intptr_t)cxy , this->trdid , process->pid );
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| 57 | vmm_display( process , false );
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| 58 | #endif
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| 59 | this->errno = EFAULT;
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| 60 | return -1;
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| 61 | }
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| 62 |
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| 63 | // check lid buffer in user space
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| 64 | error = vmm_get_vseg( process , (intptr_t)lid , &vseg );
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| 65 |
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| 66 | if( error )
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| 67 | {
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| 68 |
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| 69 | #if DEBUG_SYSCALLS_ERROR
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| 70 | printk("\n[ERROR] in %s : lid buffer unmapped %x / thread %x / process %x\n",
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| 71 | __FUNCTION__ , (intptr_t)lid , this->trdid , process->pid );
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| 72 | vmm_display( process , false );
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| 73 | #endif
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| 74 | this->errno = EFAULT;
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| 75 | return -1;
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| 76 | }
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| 77 |
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| 78 | // get parameters
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| 79 | k_cxy = local_cxy;
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| 80 | k_lid = this->core->lid;
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| 81 |
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| 82 | // copy to user space
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| 83 | hal_copy_to_uspace( cxy , &k_cxy , sizeof(uint32_t) );
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| 84 | hal_copy_to_uspace( lid , &k_lid , sizeof(uint32_t) );
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| 85 |
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| 86 | return 0;
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| 87 |
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| 88 | } // end sys_get_core()
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