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