Added Intel HEX output handler

1 files changed, 165 insertions, 0 deletions

diff --git a/src/hexout.c b/src/hexout.c
new file mode 100644
index 0000000..ef41634
--- /dev/null
+++ b/src/hexout.c
@@ -0,0 +1,165 @@
+/*
+
+    casm - Simple, portable assembler
+
+    Copyright (C) 2003-2015  Ian Cowburn (ianc@noddybox.co.uk)
+
+    This program 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.
+
+    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+    -------------------------------------------------------------------------
+
+    Intel HEX output handler.
+
+*/
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "global.h"
+#include "codepage.h"
+#include "hexout.h"
+#include "expr.h"
+
+
+/* ---------------------------------------- MACROS & TYPES
+*/
+
+/* ---------------------------------------- PRIVATE TYPES AND VARS
+*/
+enum option_t
+{
+    OPT_NULL_BYTE
+};
+
+static const ValueTable option_set[]=
+{
+    {"hex-null", OPT_NULL_BYTE},
+    {NULL}
+};
+
+typedef struct
+{
+    int		null_byte;
+} Options;
+
+static Options options =
+{
+    0
+};
+
+
+/* ---------------------------------------- PRIVATE FUNCTIONS
+*/
+
+/* ---------------------------------------- INTERFACES
+*/
+const ValueTable *HEXOutputOptions(void)
+{
+    return option_set;
+}
+
+CommandStatus HEXOutputSetOption(int opt, int argc, char *argv[],
+                                 int quoted[], char *err, size_t errsize)
+{
+    CommandStatus stat = CMD_OK;
+
+    CMD_ARGC_CHECK(1);
+
+    switch(opt)
+    {
+        case OPT_NULL_BYTE:
+            CMD_EXPR(argv[0], options.null_byte);
+            break;
+
+        default:
+            break;
+    }
+
+    return stat;
+}
+
+int HEXOutput(const char *filename, const char *filename_bank,
+              MemoryBank **bank, int count, char *error, size_t error_size)
+{
+    int f;
+
+    for(f = 0; f < count; f++)
+    {
+        FILE *fp;
+        char buff[4096];
+        const char *name;
+        Byte *mem;
+        int r;
+
+        if (count == 1)
+        {
+            name = filename;
+        }
+        else
+        {
+            snprintf(buff, sizeof buff, filename_bank, bank[f]->number);
+            name = buff;
+        }
+
+        if (!(fp = fopen(name, "wb")))
+        {
+            snprintf(error, error_size, "Failed to open %s", name);
+            return FALSE;
+        }
+
+        mem = bank[f]->memory;
+
+        for(r = 0; r < 0xffff; r += 16)
+        {
+            int n;
+            int found = 0;
+
+            for(n = 0; n < 16 && !found; n++)
+            {
+                if (mem[r+n] != options.null_byte)
+                {
+                    found = 1;
+                }
+            }
+
+            if (found)
+            {
+                Byte csum = 0;
+
+                fprintf(fp, ":10%4.4X00", r);
+
+                for(n = 0; n < 16; n++)
+                {
+                    fprintf(fp, "%2.2X", mem[r+n]);
+                    csum += mem[r+n];
+                }
+
+                csum = ~csum;
+                csum++;
+
+                fprintf(fp, "%2.2X\n", csum);
+            }
+        }
+
+        fprintf(fp, ":00000001FF\n");
+        fclose(fp);
+    }
+
+    return TRUE;
+}
+
+
+/*
+vim: ai sw=4 ts=8 expandtab
+*/