From 8189732e52080353dbf38933a8c71c6dc6811f2a Mon Sep 17 00:00:00 2001
From: Amaury Pouly <amaury.pouly@gmail.com>
Date: Tue, 27 Nov 2012 22:38:48 +0100
Subject: sbtoelf: implement sb extraction for sb1

Load, fill and call/jump instructions are extracted as elf files
like for sb2. Because of the size limitations of the sb1
instructions, the resulting elf files can easily have hundreds of
sections. The (currently) implemented elf simplification method
will hopefully reduce this to a few sections only

Change-Id: I8fd6ed935ac3128f244bbd71c782e2a0a1c6d44a
---
 utils/imxtools/sbtools/elf.c     |  5 ++++
 utils/imxtools/sbtools/elf.h     |  1 +
 utils/imxtools/sbtools/sbtoelf.c | 52 ++++++++++++++++++++++++++++++++++++----
 3 files changed, 54 insertions(+), 4 deletions(-)

(limited to 'utils/imxtools/sbtools')

diff --git a/utils/imxtools/sbtools/elf.c b/utils/imxtools/sbtools/elf.c
index 481ab98dd6..53adcd1160 100644
--- a/utils/imxtools/sbtools/elf.c
+++ b/utils/imxtools/sbtools/elf.c
@@ -217,6 +217,11 @@ void elf_add_fill_section(struct elf_params_t *params,
     sec->pattern = pattern;
 }
 
+void elf_simplify(struct elf_params_t *params)
+{
+    
+}
+
 void elf_write_file(struct elf_params_t *params, elf_write_fn_t write,
     elf_printf_fn_t printf, void *user)
 {
diff --git a/utils/imxtools/sbtools/elf.h b/utils/imxtools/sbtools/elf.h
index 2166833276..ae4e3b4225 100644
--- a/utils/imxtools/sbtools/elf.h
+++ b/utils/imxtools/sbtools/elf.h
@@ -82,6 +82,7 @@ void elf_add_fill_section(struct elf_params_t *params,
     uint32_t fill_addr, uint32_t size, uint32_t pattern);
 uint32_t elf_translate_virtual_address(struct elf_params_t *params, uint32_t addr);
 void elf_translate_addresses(struct elf_params_t *params);
+void elf_simplify(struct elf_params_t *params);
 void elf_write_file(struct elf_params_t *params, elf_write_fn_t write, elf_printf_fn_t printf, void *user);
 bool elf_read_file(struct elf_params_t *params, elf_read_fn_t read, elf_printf_fn_t printf,
     void *user);
diff --git a/utils/imxtools/sbtools/sbtoelf.c b/utils/imxtools/sbtools/sbtoelf.c
index 01a51cae90..f86200f184 100644
--- a/utils/imxtools/sbtools/sbtoelf.c
+++ b/utils/imxtools/sbtools/sbtoelf.c
@@ -157,12 +157,56 @@ static void extract_sb_file(struct sb_file_t *file)
         extract_sb_section(&file->sections[i]);
 }
 
+static void extract_elf(struct elf_params_t *elf, int count)
+{
+    char *filename = xmalloc(strlen(g_out_prefix) + 32);
+    sprintf(filename, "%s.%d.elf", g_out_prefix, count);
+    if(g_debug)
+        printf("Write boot content to %s\n", filename);
+
+    FILE *fd = fopen(filename, "wb");
+    free(filename);
+
+    if(fd == NULL)
+        return ;
+    elf_simplify(elf);
+    elf_write_file(elf, elf_write, elf_printf, fd);
+    fclose(fd);
+}
+
 static void extract_sb1_file(struct sb1_file_t *file)
 {
-    FILE *f = fopen(g_out_prefix, "wb");
-    if(f == NULL)
-        bugp("Cannot open %s for writing\n", g_out_prefix);
-    fclose(f);
+    int elf_count = 0;
+    struct elf_params_t elf;
+    elf_init(&elf);
+
+    for(int i = 0; i < file->nr_insts; i++)
+    {
+        struct sb1_inst_t *inst = &file->insts[i];
+        switch(inst->cmd)
+        {
+            case SB1_INST_LOAD:
+                elf_add_load_section(&elf, inst->addr, inst->size, inst->data);
+                break;
+            case SB1_INST_FILL:
+                elf_add_fill_section(&elf, inst->addr, inst->size, inst->pattern);
+                break;
+            case SB1_INST_CALL:
+            case SB1_INST_JUMP:
+                elf_set_start_addr(&elf, inst->addr);
+                extract_elf(&elf, elf_count++);
+                elf_release(&elf);
+                elf_init(&elf);
+                break;
+            default:
+                /* ignore mode and nop */
+                break;
+        }
+    }
+
+    if(!elf_is_empty(&elf))
+        extract_elf(&elf, elf_count);
+    elf_release(&elf);
 }
 
 static void usage(void)
-- 
cgit