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Diffstat (limited to 'libgloss/epiphany/epiphany-syscalls.c')
| -rw-r--r-- | libgloss/epiphany/epiphany-syscalls.c | 271 |
1 files changed, 0 insertions, 271 deletions
diff --git a/libgloss/epiphany/epiphany-syscalls.c b/libgloss/epiphany/epiphany-syscalls.c deleted file mode 100644 index e6ebcee24..000000000 --- a/libgloss/epiphany/epiphany-syscalls.c +++ /dev/null @@ -1,271 +0,0 @@ -/* Adapteva epiphany-core implementation of stdio support functions () - - Copyright (c) 2011, 2012 Adapteva, Inc. - 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. - * Neither the name of Adapteva nor the names of its contributors may be - used to endorse or promote products derived from this software without - specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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. */ - -#include <errno.h> - -/* simple include interface to EPIPHANY trap instruction. */ - -/* - * The simulator uses a trap instruction to escape to the simulator to do file i/o - */ - -/* trapcode r0 r1 r2 */ -#define TRAP_write 0 /* channel addr len */ -#define TRAP_read 1 /* channel addr len */ -#define TRAP_open 2 /* filepath mode */ -#define TRAP_exit 3 /* status */ -#define TRAP_pass 4 /* - */ -#define TRAP_fail 5 /* - */ -#define TRAP_close 6 /* channel */ -#define TRAP_other 7 /* subcode r1 r2 */ - - -#include "epiphany-syscalls.h" - - -/* prototypical inline asm */ -int __attribute__ ((section ("libgloss_epiphany"))) asm_write (int CHAN, void* ADDR, int LEN) -{ - register int chan asm("r0") = CHAN; - register void* addr asm("r1") = ADDR; - register int len asm("r2") = LEN; - register int result asm("r0"); - register int error asm("r3"); - asm ("trap 0" : "=r" (result), "=r" (error) : - "r" (chan), "r" (addr), "r" (len)); - if (error) - errno = error; - return result; -} - -int __attribute__ ((section ("libgloss_epiphany"))) asm_read(int CHAN, void *ADDR, int LEN) -{ - register int chan asm("r0") = CHAN; - register void* addr asm("r1") = ADDR; - register int len asm("r2") = LEN; - register int result asm("r0"); - register int error asm("r3"); - asm ("trap 1" : "=r" (result), "=r" (error) : - "r" (chan), "r" (addr), "r" (len)); - if (error) - errno = error; - return result; -} - - -int __attribute__ ((section ("libgloss_epiphany"))) -asm_open(const char* FILE, int FLAGS, int MODE) -{ - register const char* file asm("r0") = FILE; - register int flags asm("r1") = FLAGS; - register int result asm("r0"); - register int error asm("r3"); - asm ("trap 2" : "=r" (result), "=r" (error) : "r" (file), "r" (flags)); - if (error) - errno = error; - return result; -} - -void __attribute__ ((section ("libgloss_epiphany"))) asm_exit(int STATUS) -{ - register int status asm("r0") = STATUS; - asm("trap 3" :: "r" (status)); -} - -int __attribute__ ((section ("libgloss_epiphany"))) asm_close(int CHAN) -{ - register int chan asm("r0") = CHAN; - register int result asm("r0"); - register int error asm("r3"); - asm ("trap 6" : "=r" (result), "=r" (error) : "r" (chan)); - if (error) - errno = error; - return result; -} - -int __attribute__ ((section ("libgloss_epiphany"))) asm_syscall(void *P1,void *P2, void *P3, int SUBFUN) -{ - register void* p1 asm("r0") = (void*)P1; - register void* p2 asm("r1") = (void*)P2; - register void* p3 asm("r2") = (void*)P3; - register int result asm("r0"); - register int subfun asm("r3") = SUBFUN; - register int error asm("r3"); - asm ("trap 7" : "=r" (result), "=r" (error) : - "r" (p1), "r" (p2), "r" (p3), "r" (subfun)); - if (error) - errno = error; - return result; -} - -/* - * Signal functions implementation - * - */ - -#include "epiphany-config.h" - - -#define HW_RESET 0 -#define SW_EXCEPTION_IVT_N 1 -#define PAGE_MISS_IVT_N 2 -#define TIMER0_IVT_N 3 -#define TIMER1_IVT_N 4 -#define MESSAGE_IVT_N 5 -#define DMA0_IVT_N 6 -#define DMA1_IVT_N 7 -#define WAND_IVT_N 8 -#define USR_SOFT_IVT_N 9 - - -typedef void (*sighandler_t)(int); -extern sighandler_t ISR_VECTOR[]; -extern void DEFAULT_ISR_CALLBACK(); - -sighandler_t __attribute__ ((section ("libgloss_epiphany"))) signal(int signum, sighandler_t handler) { - switch( signum ) - { - case SIG_DFL /* see signal.h */: - //the default is ignore - break; - case SIG_IGN /* see signal.h */ : - DEFAULT_ISR_CALLBACK(); - break; - case SIG_ERR : - asm("trap 5"); - break; - case SIG_RESET: - ISR_VECTOR[HW_RESET] = handler; - break; - case SIG_SW_EXCEPTION: - ISR_VECTOR[SW_EXCEPTION_IVT_N] = handler; - break; - case SIG_PAGE_MISS: - ISR_VECTOR[PAGE_MISS_IVT_N] = handler; - break; - case SIG_TIMER0: - ISR_VECTOR[TIMER0_IVT_N] = handler; - break; - case SIG_TIMER1: - ISR_VECTOR[TIMER1_IVT_N] = handler; - break; - case SIG_MESSAGE: - ISR_VECTOR[MESSAGE_IVT_N] = handler; - break; - case SIG_DMA0: - ISR_VECTOR[DMA0_IVT_N] = handler; - break; - case SIG_DMA1: - ISR_VECTOR[DMA1_IVT_N] = handler; - break; - case SIG_WAND: - ISR_VECTOR[WAND_IVT_N] = handler; - break; - - case SIG_USR1: - ISR_VECTOR[USR_SOFT_IVT_N] = handler; - break; - default: - //do nothing - return 0; - } - - return 0; -} - -//int e_raise(int signum) __attribute__ ((optimize("O0"))); - -int __attribute__ ((section ("libgloss_epiphany"))) e_raise(int signum) { - - //register int imask asm("r4") = 0 ; - volatile register int ilatst /*asm("r5") */= signum; - - switch( signum ) - { - case SIG_DFL /* see signal.h */: - //the default is ignore - return 0; - case SIG_IGN /* see signal.h */ : - //do nothing - return 0; - case SIG_ERR : - - return 0; - case SIG_RESET: - //imask = 1 << HW_RESET; - ilatst = 1 << HW_RESET; - break; - - case SIG_SW_EXCEPTION: - //imask = 1 << SW_EXCEPTION_IVT_N; - ilatst = 1 << SW_EXCEPTION_IVT_N; - break; - case SIG_PAGE_MISS: - //imask = 1 << PAGE_MISS_IVT_N; - ilatst = 1 << PAGE_MISS_IVT_N; - break; - case SIG_TIMER0: - //imask = 1 << TIMER0_IVT_N; - ilatst = 1 << TIMER0_IVT_N; - break; - case SIG_TIMER1: - //imask = 1 << TIMER1_IVT_N; - ilatst = 1 << TIMER1_IVT_N; - break; - case SIG_MESSAGE: - //imask = 1 << MESSAGE_IVT_N; - ilatst = 1 << MESSAGE_IVT_N; - break; - case SIG_DMA0: - //imask = 1 << DMA0_IVT_N; - ilatst = 1 << DMA0_IVT_N; - break; - case SIG_DMA1: - //imask = 1 << DMA1_IVT_N; - ilatst = 1 << DMA1_IVT_N; - break; - case SIG_WAND: - __asm__ __volatile__ ("wand"); - //ilatst = 1 << WAND_IVT_N; - //break; - return; - - case SIG_USR1: - ilatst = 1 << USR_SOFT_IVT_N; - break; - - default: - //do nothing - return 0; - } - //asm("movts imask, r4;"); - //asm("movts ilatst, r5;"); - __asm__ __volatile__ ("movts ilatst, %0" : "=r" (ilatst) : "r" (ilatst)); - return 0; - -} |