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-rw-r--r--plugins/arm/v7/registers/simd.c534
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diff --git a/plugins/arm/v7/registers/simd.c b/plugins/arm/v7/registers/simd.c
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+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * simd.c - aides auxiliaires relatives aux registres SIMD ARMv7
+ *
+ * Copyright (C) 2018 Cyrille Bagard
+ *
+ * This file is part of Chrysalide.
+ *
+ * Chrysalide is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Chrysalide is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Chrysalide. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "simd.h"
+
+
+#include <assert.h>
+#include <stdio.h>
+
+
+#include "../register-int.h"
+
+
+
+/* ------------------------- GESTION UNITAIRE DES REGISTRES ------------------------- */
+
+
+/* Représentation d'un registre ARMv7 (instance) */
+struct _GArmV7SIMDRegister
+{
+ GArmV7Register parent; /* Instance parente */
+
+ SIMDRegisterMapping mapping; /* Type de registre */
+
+};
+
+/* Représentation d'un registre ARMv7 (classe) */
+struct _GArmV7SIMDRegisterClass
+{
+ GArmV7RegisterClass parent; /* Classe parente */
+
+};
+
+
+#define MAX_REGNAME_LEN 4
+
+
+/* Initialise la classe des registres SIMD ARMv7. */
+static void g_armv7_simd_register_class_init(GArmV7SIMDRegisterClass *);
+
+/* Initialise une instance de registre SIMD ARMv7. */
+static void g_armv7_simd_register_init(GArmV7SIMDRegister *);
+
+/* Supprime toutes les références externes. */
+static void g_armv7_simd_register_dispose(GArmV7SIMDRegister *);
+
+/* Procède à la libération totale de la mémoire. */
+static void g_armv7_simd_register_finalize(GArmV7SIMDRegister *);
+
+/* Traduit un registre en version humainement lisible. */
+static void g_armv7_simd_register_print(const GArmV7SIMDRegister *, GBufferLine *, AsmSyntax);
+
+/* Crée une réprésentation de registre SIMD ARMv7. */
+static GArchRegister *_g_armv7_simd_register_new(SIMDRegisterMapping, uint8_t);
+
+
+
+/* --------------------- TRANSPOSITIONS VIA CACHE DES REGISTRES --------------------- */
+
+
+/* Charge un registre depuis une mémoire tampon. */
+static GArchRegister *g_armv7_simd_register_unserialize(GArmV7SIMDRegister *, GAsmStorage *, packed_buffer *);
+
+/* Sauvegarde un registre dans une mémoire tampon. */
+static bool g_armv7_simd_register_serialize(const GArmV7SIMDRegister *, GAsmStorage *, packed_buffer *);
+
+
+
+/* ------------------------ GESTION SOUS FORME DE SINGLETONS ------------------------ */
+
+
+/* Conservation des registres utilisés */
+static GArchRegister **_armv7_simd_registers[SRM_COUNT] = { NULL, NULL, NULL };
+static size_t _av7_simd_reg_count[SRM_COUNT] = { 0, 0, 0 };
+G_LOCK_DEFINE_STATIC(_av7_simd_reg_mutex);
+
+
+/* Fournit le singleton associé à un registre SIMD ARMv7. */
+static GArchRegister *get_armv7_simd_register(SIMDRegisterMapping, uint8_t);
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/* GESTION UNITAIRE DES REGISTRES */
+/* ---------------------------------------------------------------------------------- */
+
+
+/* Indique le type défini pour une représentation d'un registre SIMD ARMv7. */
+G_DEFINE_TYPE(GArmV7SIMDRegister, g_armv7_simd_register, G_TYPE_ARMV7_REGISTER);
+
+
+/******************************************************************************
+* *
+* Paramètres : klass = classe à initialiser. *
+* *
+* Description : Initialise la classe des registres SIMD ARMv7. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_armv7_simd_register_class_init(GArmV7SIMDRegisterClass *klass)
+{
+ GObjectClass *object_class; /* Autre version de la classe */
+ GArchRegisterClass *reg_class; /* Classe de haut niveau */
+
+ object_class = G_OBJECT_CLASS(klass);
+
+ object_class->dispose = (GObjectFinalizeFunc/* ! */)g_armv7_simd_register_dispose;
+ object_class->finalize = (GObjectFinalizeFunc)g_armv7_simd_register_finalize;
+
+ reg_class = G_ARCH_REGISTER_CLASS(klass);
+
+ reg_class->print = (reg_print_fc)g_armv7_simd_register_print;
+ reg_class->unserialize = (reg_unserialize_fc)g_armv7_simd_register_unserialize;
+ reg_class->serialize = (reg_serialize_fc)g_armv7_simd_register_serialize;
+
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : reg = instance à initialiser. *
+* *
+* Description : Initialise une instance de registre SIMD ARMv7. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_armv7_simd_register_init(GArmV7SIMDRegister *reg)
+{
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : reg = instance d'objet GLib à traiter. *
+* *
+* Description : Supprime toutes les références externes. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_armv7_simd_register_dispose(GArmV7SIMDRegister *reg)
+{
+ G_OBJECT_CLASS(g_armv7_simd_register_parent_class)->dispose(G_OBJECT(reg));
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : reg = instance d'objet GLib à traiter. *
+* *
+* Description : Procède à la libération totale de la mémoire. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_armv7_simd_register_finalize(GArmV7SIMDRegister *reg)
+{
+ G_OBJECT_CLASS(g_armv7_simd_register_parent_class)->finalize(G_OBJECT(reg));
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : reg = registre à transcrire. *
+* line = ligne tampon où imprimer l'opérande donné. *
+* syntax = type de représentation demandée. *
+* *
+* Description : Traduit un registre en version humainement lisible. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static void g_armv7_simd_register_print(const GArmV7SIMDRegister *reg, GBufferLine *line, AsmSyntax syntax)
+{
+ char key[MAX_REGNAME_LEN]; /* Mot clef principal */
+ size_t klen; /* Taille de ce mot clef */
+
+ switch (reg->mapping)
+ {
+ case SRM_SINGLE_WORD:
+ klen = snprintf(key, MAX_REGNAME_LEN, "s%hhu", G_ARM_REGISTER(reg)->index);
+ break;
+
+ case SRM_DOUBLE_WORD:
+ klen = snprintf(key, MAX_REGNAME_LEN, "d%hhu", G_ARM_REGISTER(reg)->index);
+ break;
+
+ case SRM_QUAD_WORD:
+ klen = snprintf(key, MAX_REGNAME_LEN, "q%hhu", G_ARM_REGISTER(reg)->index);
+ break;
+
+ default:
+ assert(false);
+ klen = snprintf(key, MAX_REGNAME_LEN, "x??");
+ break;
+
+ }
+
+ g_buffer_line_append_text(line, BLC_ASSEMBLY, key, klen, RTT_REGISTER, NULL);
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : mapping = type de registre demandé. *
+* index = indice du registre correspondant. *
+* *
+* Description : Crée une réprésentation de registre SIMD ARMv7. *
+* *
+* Retour : Adresse de la structure mise en place. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static GArchRegister *_g_armv7_simd_register_new(SIMDRegisterMapping mapping, uint8_t index)
+{
+ GArmV7SIMDRegister *result; /* Structure à retourner */
+ uint8_t max; /* Borne supérieure de limite */
+
+ switch (mapping)
+ {
+ case SRM_SINGLE_WORD:
+ max = 31;
+ break;
+
+ case SRM_DOUBLE_WORD:
+ max = 31;
+ break;
+
+ case SRM_QUAD_WORD:
+ max = 15;
+ break;
+
+ default:
+ assert(false);
+ goto bad_mapping;
+ break;
+
+ }
+
+ if (index > max)
+ goto bad_index;
+
+ result = g_object_new(G_TYPE_ARMV7_SIMD_REGISTER, NULL);
+
+ G_ARM_REGISTER(result)->index = index;
+
+ result->mapping = mapping;
+
+ return G_ARCH_REGISTER(result);
+
+ bad_mapping:
+ bad_index:
+
+ return NULL;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : mapping = type de registre demandé. *
+* index = indice du registre correspondant. *
+* *
+* Description : Crée une réprésentation de registre SIMD ARMv7. *
+* *
+* Retour : Adresse de la structure mise en place. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+GArchRegister *g_armv7_simd_register_new(SIMDRegisterMapping mapping, uint8_t index)
+{
+ GArchRegister *result; /* Structure à retourner */
+
+ result = get_armv7_simd_register(mapping, index);
+
+ return result;
+
+}
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/* TRANSPOSITIONS VIA CACHE DES OPERANDES */
+/* ---------------------------------------------------------------------------------- */
+
+
+/******************************************************************************
+* *
+* Paramètres : reg = registre d'architecture à constituer. *
+* storage = mécanisme de sauvegarde à manipuler. *
+* pbuf = zone tampon à remplir. *
+* *
+* Description : Charge un registre depuis une mémoire tampon. *
+* *
+* Retour : Bilan de l'opération. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static GArchRegister *g_armv7_simd_register_unserialize(GArmV7SIMDRegister *reg, GAsmStorage *storage, packed_buffer *pbuf)
+{
+ GArchRegister *result; /* Instance à retourner */
+ SIMDRegisterMapping mapping; /* Type de registre */
+ bool status; /* Bilan d'une extraction */
+ uint8_t index; /* Indice du registre */
+ GArchRegisterClass *parent; /* Classe parente à consulter */
+
+ status = extract_packed_buffer(pbuf, &mapping, sizeof(SIMDRegisterMapping), true);
+
+ if (status)
+ status = extract_packed_buffer(pbuf, &index, sizeof(uint8_t), false);
+
+ if (status)
+ {
+ result = get_armv7_simd_register(mapping, index);
+
+ if (result == NULL)
+ g_object_unref(G_OBJECT(reg));
+
+ }
+
+ else
+ {
+ g_object_unref(G_OBJECT(reg));
+ result = NULL;
+ }
+
+ if (result != NULL)
+ {
+ parent = G_ARCH_REGISTER_CLASS(g_armv7_simd_register_parent_class);
+
+ result = parent->unserialize(G_ARCH_REGISTER(reg), storage, pbuf);
+
+ }
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : reg = registre d'architecture à consulter. *
+* storage = mécanisme de sauvegarde à manipuler. *
+* pbuf = zone tampon à remplir. *
+* *
+* Description : Sauvegarde un registre dans une mémoire tampon. *
+* *
+* Retour : Bilan de l'opération. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static bool g_armv7_simd_register_serialize(const GArmV7SIMDRegister *reg, GAsmStorage *storage, packed_buffer *pbuf)
+{
+ bool result; /* Bilan à retourner */
+ GArchRegisterClass *parent; /* Classe parente à consulter */
+
+ result = extend_packed_buffer(pbuf, &reg->mapping, sizeof(SIMDRegisterMapping), true);
+
+ if (result)
+ {
+ parent = G_ARCH_REGISTER_CLASS(g_armv7_simd_register_parent_class);
+
+ result = parent->serialize(G_ARCH_REGISTER(reg), storage, pbuf);
+
+ }
+
+ return result;
+
+}
+
+
+
+/* ---------------------------------------------------------------------------------- */
+/* GESTION SOUS FORME DE SINGLETONS */
+/* ---------------------------------------------------------------------------------- */
+
+
+/******************************************************************************
+* *
+* Paramètres : mapping = type de registre demandé. *
+* index = indice du registre correspondant. *
+* *
+* Description : Fournit le singleton associé à un registre SIMD ARMv7. *
+* *
+* Retour : Adresse de la structure mise en place. *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+static GArchRegister *get_armv7_simd_register(SIMDRegisterMapping mapping, uint8_t index)
+{
+ GArchRegister *result; /* Structure à retourner */
+ size_t new_count; /* Nouvelle taille à considérer*/
+ size_t i; /* Boucle de parcours */
+
+ assert(mapping < SRM_COUNT);
+
+ G_LOCK(_av7_simd_reg_mutex);
+
+ if (index >= _av7_simd_reg_count[mapping])
+ {
+ /**
+ * On valide déjà le fait que le registre puisse être créé
+ * avant de réaliser une allocation potentiellement énorme
+ * avec un indice démesuré.
+ */
+
+ result = _g_armv7_simd_register_new(mapping, index);
+
+ if (result == NULL)
+ goto bad_index;
+
+ new_count = index + 1;
+
+ _armv7_simd_registers[mapping] = realloc(_armv7_simd_registers[mapping],
+ new_count * sizeof(GArchRegister *));
+
+ for (i = _av7_simd_reg_count[mapping]; i < new_count; i++)
+ _armv7_simd_registers[mapping][i] = NULL;
+
+ _av7_simd_reg_count[mapping] = new_count;
+
+ }
+
+ else
+ result = NULL;
+
+ if (_armv7_simd_registers[mapping][index] == NULL)
+ {
+ if (result != NULL)
+ _armv7_simd_registers[mapping][index] = result;
+ else
+ _armv7_simd_registers[mapping][index] = _g_armv7_simd_register_new(mapping, index);
+ }
+
+ result = _armv7_simd_registers[mapping][index];
+
+ G_UNLOCK(_av7_simd_reg_mutex);
+
+ g_object_ref(G_OBJECT(result));
+
+ bad_index:
+
+ return result;
+
+}
+
+
+/******************************************************************************
+* *
+* Paramètres : - *
+* *
+* Description : Vide totalement le cache des registres SIMD ARMv7. *
+* *
+* Retour : - *
+* *
+* Remarques : - *
+* *
+******************************************************************************/
+
+void clean_armv7_simd_register_cache(void)
+{
+ SIMDRegisterMapping i; /* Boucle de parcours #1 */
+ size_t k; /* Boucle de parcours #2 */
+
+ G_LOCK(_av7_simd_reg_mutex);
+
+ for (i = 0; i < SRM_COUNT; i++)
+ {
+ for (k = 0; k < _av7_simd_reg_count[i]; k++)
+ g_object_unref(G_OBJECT(_armv7_simd_registers[i][k]));
+
+ if (_armv7_simd_registers[i] != NULL)
+ free(_armv7_simd_registers[i]);
+
+ _armv7_simd_registers[i] = NULL;
+ _av7_simd_reg_count[i] = 0;
+
+ }
+
+ G_UNLOCK(_av7_simd_reg_mutex);
+
+}
generated by cgit v0.11.2-87-g4458 at 2024-04-28 07:48:05 (GMT)