Created operands for resolving symbols in disassembly code.

git-svn-id: svn://svn.gna.org/svn/chrysalide/trunk@442 abbe820e-26c8-41b2-8c08-b7b2b41f8b0a

1 files changed, 216 insertions, 0 deletions

diff --git a/src/arch/arm/v7/post.c b/src/arch/arm/v7/post.c
new file mode 100644
index 0000000..8ba12d8
--- /dev/null
+++ b/src/arch/arm/v7/post.c
@@ -0,0 +1,216 @@
+
+/* Chrysalide - Outil d'analyse de fichiers binaires
+ * post.c - traitements complémentaires à la phase de désassemblage
+ *
+ * Copyright (C) 2014 Cyrille Bagard
+ *
+ *  This file is part of Chrysalide.
+ *
+ *  OpenIDA 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.
+ *
+ *  OpenIDA 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 Foobar.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "post.h"
+
+
+
+
+
+#include "../../target.h"
+
+
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : instr  = instruction ARMv7 à traiter.                        *
+*                format = acès aux données du binaire d'origine.              *
+*                                                                             *
+*  Description : Complète un désassemblage accompli pour une instruction.     *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+void post_process_thumb_instruction_bl(GArchInstruction *instr, GBinFormat *format)
+{
+
+
+    const mrange_t *range;
+
+    virt_t pc;
+
+
+
+
+
+    GArchOperand *op;
+    vmpa_t val;
+    GArchOperand *new;
+
+    vmpa2t target;
+    mrange_t trange;
+    VMPA_BUFFER(loc);
+    char name[5 + VMPA_MAX_LEN];
+    GBinRoutine *routine;                   /* Nouvelle routine trouvée    */
+    GBinSymbol *symbol;                     /* Nouveau symbole construit   */
+
+
+
+
+    range = g_arch_instruction_get_range(instr);
+
+    pc = get_virt_addr(get_mrange_addr(range)) + 4 /* PC++ */;
+    printf("  -- PC = 0x%x\n", (unsigned int)pc);
+
+
+    op = g_arch_instruction_get_operand(instr, 0);
+
+    g_imm_operand_to_vmpa_t(G_IMM_OPERAND(op), &val);
+
+    printf("  -> %llx = %lld  ==>> 0x%x\n", val, val, (unsigned int)(pc + val));
+
+
+
+    new = g_target_operand_new(MDS_32_BITS, pc + val);
+
+    if (!g_target_operand_resolve(G_TARGET_OPERAND(new), format))
+    {
+        init_vmpa(&target, VMPA_NO_PHYSICAL, pc + val);
+        init_mrange(&trange, &target, 0);
+
+        vmpa2_virt_to_string(&target, MDS_32_BITS, loc, NULL);
+        snprintf(name, sizeof(name), "loc_%s", loc + 2);
+
+        routine = g_binary_routine_new();
+        g_binary_routine_set_name(routine, strdup(name));
+        //routine = try_to_demangle_routine(name);
+
+        g_binary_routine_set_range(routine, &trange);
+
+        symbol = g_binary_symbol_new(STP_ROUTINE, NULL, ~0);
+        g_binary_symbol_attach_routine(symbol, routine);
+        g_binary_format_add_symbol(G_BIN_FORMAT(format), symbol);
+
+
+
+        g_target_operand_resolve(G_TARGET_OPERAND(new), format);
+
+
+    }
+
+
+    g_arch_instruction_replace_operand(instr, new, op);
+    //g_arch_instruction_attach_extra_operand(result, new);
+
+
+
+}
+
+
+
+
+
+/******************************************************************************
+*                                                                             *
+*  Paramètres  : instr  = instruction ARMv7 à traiter.                        *
+*                format = acès aux données du binaire d'origine.              *
+*                                                                             *
+*  Description : Complète un désassemblage accompli pour une instruction.     *
+*                                                                             *
+*  Retour      : -                                                            *
+*                                                                             *
+*  Remarques   : -                                                            *
+*                                                                             *
+******************************************************************************/
+
+void post_process_thumb_instruction_blx(GArchInstruction *instr, GBinFormat *format)
+{
+
+
+
+
+
+    const mrange_t *range;
+
+    virt_t pc;
+
+
+
+    GArchOperand *op;
+    vmpa_t val;
+    GArchOperand *new;
+
+    vmpa2t target;
+    mrange_t trange;
+    VMPA_BUFFER(loc);
+    char name[5 + VMPA_MAX_LEN];
+    GBinRoutine *routine;                   /* Nouvelle routine trouvée    */
+    GBinSymbol *symbol;                     /* Nouveau symbole construit   */
+
+
+
+    range = g_arch_instruction_get_range(instr);
+
+    pc = get_virt_addr(get_mrange_addr(range)) + 4 /* PC++ */;
+
+    printf("  -- PC = 0x%x -> 0x%x\n", (unsigned int)pc, (unsigned int)pc - pc % 4);
+    pc = pc - pc % 4;
+
+    op = g_arch_instruction_get_operand(instr, 0);
+
+    g_imm_operand_to_vmpa_t(G_IMM_OPERAND(op), &val);
+
+    printf("  -> %llx = %lld  ==>> 0x%x\n", val, val, (unsigned int)(pc + val));
+
+
+
+    new = g_target_operand_new(MDS_32_BITS, pc + val);
+
+    if (!g_target_operand_resolve(G_TARGET_OPERAND(new), format))
+    {
+        init_vmpa(&target, VMPA_NO_PHYSICAL, pc + val);
+        init_mrange(&trange, &target, 0);
+
+        vmpa2_virt_to_string(&target, MDS_32_BITS, loc, NULL);
+        snprintf(name, sizeof(name), "loc_%s", loc + 2);
+
+        routine = g_binary_routine_new();
+        g_binary_routine_set_name(routine, strdup(name));
+        //routine = try_to_demangle_routine(name);
+
+        g_binary_routine_set_range(routine, &trange);
+
+        symbol = g_binary_symbol_new(STP_ROUTINE, NULL, ~0);
+        g_binary_symbol_attach_routine(symbol, routine);
+        g_binary_format_add_symbol(G_BIN_FORMAT(format), symbol);
+
+
+
+        g_target_operand_resolve(G_TARGET_OPERAND(new), format);
+
+
+    }
+
+    g_arch_instruction_replace_operand(instr, new, op);
+    //g_arch_instruction_attach_extra_operand(result, new);
+
+
+
+
+}
+