92 lines
1.9 KiB
C
92 lines
1.9 KiB
C
/* Copyright (c) 2021 Barcelona Supercomputing Center (BSC)
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* SPDX-License-Identifier: GPL-3.0-or-later */
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#include "uthash.h"
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#include "ovni.h"
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#include "trace.h"
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#include "emu.h"
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#include "prv.h"
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#include "chan.h"
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/* --------------------------- init ------------------------------- */
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void
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hook_init_kernel(struct ovni_emu *emu)
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{
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struct ovni_ethread *th;
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struct ovni_cpu *cpu;
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size_t i;
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int row;
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FILE *prv_th, *prv_cpu;
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int64_t *clock;
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struct ovni_chan **uth, **ucpu;
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clock = &emu->delta_time;
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prv_th = emu->prv_thread;
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prv_cpu = emu->prv_cpu;
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/* Init the channels in all threads */
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for(i=0; i<emu->total_nthreads; i++)
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{
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th = emu->global_thread[i];
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row = th->gindex + 1;
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uth = &emu->th_chan;
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chan_th_init(th, uth, CHAN_KERNEL_CS, CHAN_TRACK_NONE, 0, 1, 1, row, prv_th, clock);
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}
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/* Init the channels in all cpus */
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for(i=0; i<emu->total_ncpus; i++)
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{
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cpu = emu->global_cpu[i];
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row = cpu->gindex + 1;
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ucpu = &emu->cpu_chan;
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chan_cpu_init(cpu, ucpu, CHAN_KERNEL_CS, CHAN_TRACK_TH_ACTIVE, 0, 0, 1, row, prv_cpu, clock);
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}
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}
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/* --------------------------- pre ------------------------------- */
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static void
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context_switch(struct ovni_emu *emu)
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{
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struct ovni_ethread *th;
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struct ovni_chan *chan;
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th = emu->cur_thread;
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chan = &th->chan[CHAN_KERNEL_CS];
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switch(emu->cur_ev->header.value)
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{
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case 'O':
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chan_push(chan, ST_KERNEL_CSOUT);
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break;
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case 'I':
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chan_pop(chan, ST_KERNEL_CSOUT);
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break;
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default:
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edie(emu, "unexpected value '%c' (expecting 'O' or 'I')\n",
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emu->cur_ev->header.value);
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}
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}
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void
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hook_pre_kernel(struct ovni_emu *emu)
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{
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if(emu->cur_ev->header.model != 'K')
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edie(emu, "hook_pre_kernel: unexpected event with model %c\n",
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emu->cur_ev->header.model);
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switch(emu->cur_ev->header.category)
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{
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case 'C':
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context_switch(emu);
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break;
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default:
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edie(emu, "hook_pre_kernel: unexpected event with category %c\n",
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emu->cur_ev->header.category);
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}
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}
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