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/*
* Copyright (c) 2011 Aeroflex Gaisler
*
* BSD license:
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <asm-leon/leon.h>
#include <asm-leon/leonstack.h>
#include <asm-leon/irq.h>
#include <asm-leon/irq.h>
#include <asm-leon/time.h>
#include <asm-leon/contextswitch.h>
/* This asm code relies on the following offsets (setjmp.h):
#define THREAD_JB_SP 0
#define THREAD_JB_PC 1
#define THREAD_JB_PSR 8
#define THREAD_JB_WIM 9 */
int
_do_thread_setjmp (threadctx_t env, unsigned int savesigs)
{
#ifndef _FLAT
/* first restore should trap */
env[THREAD_JB_WIM] = 1 << ((env[THREAD_JB_PSR] & SPARC_PSR_WIN_MASK) + 1);
env[THREAD_JB_WIM] |= env[THREAD_JB_WIM] >> SPARC_NUM_REGWIN;
#else
env[THREAD_JB_WIM] = 0;
#endif
#ifndef _SOFT_FLOAT
env[THREAD_JB_FPUCTX] = fpustate_current;
#endif
return 0;
}
void
thread_longjmp (threadctx_t env, int val)
{
if (!val)
val = 1;
#ifndef _SOFT_FLOAT
fpustate_current = env[THREAD_JB_FPUCTX];
#endif
_switch_to (env, val);
/* __asm__ __volatile__( \ */
/* " mov %8,%%i0 /\* propagate on restore *\/ \n\t"\ */
/* " mov %0,%%i1 /\* propagate on restore *\/ \n\t"\ */
/* " restore \n\t"\ */
/* " mov %%o0,%%g6 \n\t"\ */
/* " mov %%o1,%%g3 /\* former %%i1 (val) *\/ \n\t"\ */
/* " \n\t"\ */
/* " !ta 0x03 /\* flush registers *\/ \n\t"\ */
/* " save %%sp, %7, %%sp \n\t"\ */
/* " save %%sp, %7, %%sp \n\t"\ */
/* " save %%sp, %7, %%sp \n\t"\ */
/* " save %%sp, %7, %%sp \n\t"\ */
/* " save %%sp, %7, %%sp \n\t"\ */
/* " save %%sp, %7, %%sp \n\t"\ */
/* " save %%sp, %7, %%sp \n\t"\ */
/* " \n\t"\ */
/* " ldd [%%g6+%5], %%g4 /\* load psr,wim *\/ \n\t"\ */
/* " wr %%g4, 0x20, %%psr \n\t"\ */
/* " nop \n\t"\ */
/* " nop \n\t"\ */
/* " nop \n\t"\ */
/* " ldd [%%g6 +%1], %%sp /\* load sp, pc to jump to *\/ \n\t"\ */
/* " wr %%g5, 0x0, %%wim \n\t"\ */
/* " \n\t"\ */
/* " ldd [%%sp], %%l0 /\* restore window *\/ \n\t"\ */
/* " ldd [%%sp+8], %%l2 \n\t"\ */
/* " ldd [%%sp+16], %%l4 \n\t"\ */
/* " ldd [%%sp+24], %%l6 \n\t"\ */
/* " \n\t"\ */
/* " ldd [%%sp+32], %%i0 \n\t"\ */
/* " ldd [%%sp+40], %%i2 \n\t"\ */
/* " ldd [%%sp+48], %%i4 \n\t"\ */
/* " ldd [%%sp+56], %%i6 \n\t"\ */
/* " wr %%g4, 0x00, %%psr \n\t"\ */
/* " nop \n\t"\ */
/* " nop \n\t"\ */
/* " nop \n\t"\ */
/* " \n\t"\ */
/* " jmp %%o7 + 8 /\* success *\/ \n\t"\ */
/* " mov %%g3, %%o0 /\* return %%g3 *\/ \n\t"\ */
/* : : /\* %0 *\/ "r" (val), \ */
/* /\* %1 *\/ "i" (sizeof(int) * THREAD_JB_SP), \ */
/* /\* %2 *\/ "i" (sizeof(int) * THREAD_JB_I7), \ */
/* /\* %3 *\/ "i" (sizeof(int) * THREAD_JB_FP), \ */
/* /\* %4 *\/ "i" (sizeof(int) * THREAD_JB_PC), \ */
/* /\* %5 *\/ "i" (sizeof(int) * THREAD_JB_PSR), \ */
/* /\* %6 *\/ "i" (sizeof(int) * THREAD_JB_WIM), \ */
/* /\* %7 *\/ "i" (-SF_REGS_SZ), \ */
/* /\* %8 *\/ "r" (env) ); */
/* never come here */
}
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