preproc: Move NOP preprocessor into separate file

No need to carry it in nasm.c, let it be more modular.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>

8 files changed, 206 insertions, 152 deletions

diff --git a/Makefile.in b/Makefile.in
index 2a465eb..d7b4e22 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -81,7 +81,8 @@ NASM =	nasm.$(O) nasmlib.$(O) ver.$(O) \
 	macros.$(O) listing.$(O) eval.$(O) exprlib.$(O) stdscan.$(O) \
 	strfunc.$(O) tokhash.$(O) regvals.$(O) regflags.$(O) \
 	ilog2.$(O) \
-	lib/strlcpy.$(O)
+	lib/strlcpy.$(O) \
+	preproc-nop.$(O)
 
 NDISASM = ndisasm.$(O) disasm.$(O) sync.$(O) nasmlib.$(O) ver.$(O) \
 	insnsd.$(O) insnsb.$(O) insnsn.$(O) regs.$(O) regdis.$(O)
@@ -379,6 +380,8 @@ parser.$(O): parser.c compiler.h config.h directiv.h eval.h float.h insns.h \
  stdscan.h tables.h tokens.h
 pptok.$(O): pptok.c compiler.h config.h hashtbl.h nasmlib.h pptok.h \
  preproc.h
+preproc-nop.$(O): preproc-nop.c compiler.h config.h directiv.h insnsi.h \
+ nasm.h nasmlib.h opflags.h pptok.h preproc.h regs.h
 preproc.$(O): preproc.c compiler.h config.h directiv.h eval.h hashtbl.h \
  insnsi.h nasm.h nasmlib.h opflags.h pptok.h preproc.h quote.h regs.h \
  stdscan.h tables.h tokens.h
diff --git a/Mkfiles/msvc.mak b/Mkfiles/msvc.mak
index 2a9ee82..65efd6c 100644
--- a/Mkfiles/msvc.mak
+++ b/Mkfiles/msvc.mak
@@ -50,7 +50,8 @@ NASM =	nasm.$(O) nasmlib.$(O) ver.$(O) \
 	macros.$(O) listing.$(O) eval.$(O) exprlib.$(O) stdscan.$(O) \
 	strfunc.$(O) tokhash.$(O) regvals.$(O) regflags.$(O) \
 	ilog2.$(O) \
-	lib/strlcpy.$(O)
+	lib/strlcpy.$(O) \
+	preproc-nop.$(O)
 
 NDISASM = ndisasm.$(O) disasm.$(O) sync.$(O) nasmlib.$(O) ver.$(O) \
 	insnsd.$(O) insnsb.$(O) insnsn.$(O) regs.$(O) regdis.$(O)
@@ -286,6 +287,8 @@ parser.$(O): parser.c compiler.h directiv.h eval.h float.h insns.h insnsi.h \
  nasm.h nasmlib.h opflags.h parser.h pptok.h preproc.h regs.h stdscan.h \
  tables.h tokens.h
 pptok.$(O): pptok.c compiler.h hashtbl.h nasmlib.h pptok.h preproc.h
+preproc-nop.$(O): preproc-nop.c compiler.h directiv.h insnsi.h nasm.h \
+ nasmlib.h opflags.h pptok.h preproc.h regs.h
 preproc.$(O): preproc.c compiler.h directiv.h eval.h hashtbl.h insnsi.h \
  nasm.h nasmlib.h opflags.h pptok.h preproc.h quote.h regs.h stdscan.h \
  tables.h tokens.h
diff --git a/Mkfiles/netware.mak b/Mkfiles/netware.mak
index fb33c23..aa9532e 100644
--- a/Mkfiles/netware.mak
+++ b/Mkfiles/netware.mak
@@ -46,7 +46,8 @@ NASM =	nasm.o nasmlib.o ver.o \
 	macros.o listing.o eval.o exprlib.o stdscan.o \
 	strfunc.o tokhash.o regvals.o regflags.o \
 	ilog2.o \
-	strlcpy.o
+	strlcpy.o \
+	preproc-nop.o
 
 NDISASM = ndisasm.o disasm.o sync.o nasmlib.o ver.o \
 	insnsd.o insnsb.o insnsn.o regs.o regdis.o
@@ -216,6 +217,8 @@ parser.o: parser.c compiler.h config.h directiv.h eval.h float.h insns.h \
  insnsi.h nasm.h nasmlib.h opflags.h parser.h pptok.h preproc.h regs.h \
  stdscan.h tables.h tokens.h
 pptok.o: pptok.c compiler.h config.h hashtbl.h nasmlib.h pptok.h preproc.h
+preproc-nop.o: preproc-nop.c compiler.h config.h directiv.h insnsi.h nasm.h \
+ nasmlib.h opflags.h pptok.h preproc.h regs.h
 preproc.o: preproc.c compiler.h config.h directiv.h eval.h hashtbl.h \
  insnsi.h nasm.h nasmlib.h opflags.h pptok.h preproc.h quote.h regs.h \
  stdscan.h tables.h tokens.h
diff --git a/Mkfiles/openwcom.mak b/Mkfiles/openwcom.mak
index 2f1a2cf..f70e59b 100644
--- a/Mkfiles/openwcom.mak
+++ b/Mkfiles/openwcom.mak
@@ -62,7 +62,8 @@ NASM =	nasm.$(O) nasmlib.$(O) ver.$(O) &
 	macros.$(O) listing.$(O) eval.$(O) exprlib.$(O) stdscan.$(O) &
 	strfunc.$(O) tokhash.$(O) regvals.$(O) regflags.$(O) &
 	ilog2.$(O) &
-	lib/strlcpy.$(O)
+	lib/strlcpy.$(O) &
+	preproc-nop.$(O)
 
 NDISASM = ndisasm.$(O) disasm.$(O) sync.$(O) nasmlib.$(O) ver.$(O) &
 	insnsd.$(O) insnsb.$(O) insnsn.$(O) regs.$(O) regdis.$(O)
@@ -362,6 +363,8 @@ parser.$(O): parser.c compiler.h config.h directiv.h eval.h float.h insns.h &
  stdscan.h tables.h tokens.h
 pptok.$(O): pptok.c compiler.h config.h hashtbl.h nasmlib.h pptok.h &
  preproc.h
+preproc-nop.$(O): preproc-nop.c compiler.h config.h directiv.h insnsi.h &
+ nasm.h nasmlib.h opflags.h pptok.h preproc.h regs.h
 preproc.$(O): preproc.c compiler.h config.h directiv.h eval.h hashtbl.h &
  insnsi.h nasm.h nasmlib.h opflags.h pptok.h preproc.h quote.h regs.h &
  stdscan.h tables.h tokens.h
diff --git a/Mkfiles/owlinux.mak b/Mkfiles/owlinux.mak
index 5e4a793..b655f9c 100644
--- a/Mkfiles/owlinux.mak
+++ b/Mkfiles/owlinux.mak
@@ -73,7 +73,8 @@ NASM =	nasm.$(O) nasmlib.$(O) ver.$(O) \
 	macros.$(O) listing.$(O) eval.$(O) exprlib.$(O) stdscan.$(O) \
 	strfunc.$(O) tokhash.$(O) regvals.$(O) regflags.$(O) \
 	ilog2.$(O) \
-	lib/strlcpy.$(O)
+	lib/strlcpy.$(O) \
+	preproc-nop.$(O)
 
 NDISASM = ndisasm.$(O) disasm.$(O) sync.$(O) nasmlib.$(O) ver.$(O) \
 	insnsd.$(O) insnsb.$(O) insnsn.$(O) regs.$(O) regdis.$(O)
@@ -325,6 +326,8 @@ parser.$(O): parser.c compiler.h directiv.h eval.h float.h insns.h insnsi.h \
  nasm.h nasmlib.h opflags.h parser.h pptok.h preproc.h regs.h stdscan.h \
  tables.h tokens.h
 pptok.$(O): pptok.c compiler.h hashtbl.h nasmlib.h pptok.h preproc.h
+preproc-nop.$(O): preproc-nop.c compiler.h directiv.h insnsi.h nasm.h \
+ nasmlib.h opflags.h pptok.h preproc.h regs.h
 preproc.$(O): preproc.c compiler.h directiv.h eval.h hashtbl.h insnsi.h \
  nasm.h nasmlib.h opflags.h pptok.h preproc.h quote.h regs.h stdscan.h \
  tables.h tokens.h
diff --git a/nasm.c b/nasm.c
index 21f7139..63e73e7 100644
--- a/nasm.c
+++ b/nasm.c
@@ -166,32 +166,6 @@ static const struct warning {
 };
 
 /*
- * This is a null preprocessor which just copies lines from input
- * to output. It's used when someone explicitly requests that NASM
- * not preprocess their source file.
- */
-
-static void no_pp_reset(char *file, int pass, ListGen *listgen, StrList **deplist);
-static char *no_pp_getline(void);
-static void no_pp_cleanup(int pass);
-static void no_pp_extra_stdmac(macros_t *macros);
-static void no_pp_pre_define(char *definition);
-static void no_pp_pre_undefine(char *definition);
-static void no_pp_pre_include(char *fname);
-static void no_pp_include_path(char *path);
-
-static struct preproc_ops no_pp = {
-    no_pp_reset,
-    no_pp_getline,
-    no_pp_cleanup,
-    no_pp_extra_stdmac,
-    no_pp_pre_define,
-    no_pp_pre_undefine,
-    no_pp_pre_include,
-    no_pp_include_path
-};
-
-/*
  * get/set current offset...
  */
 #define GET_CURR_OFFS (in_abs_seg?abs_offset:\
@@ -859,7 +833,7 @@ static bool process_arg(char *p, char *q)
             break;
 
         case 'a':              /* assemble only - don't preprocess */
-            preproc = &no_pp;
+            preproc = &preproc_nop;
             break;
 
 	case 'W':
@@ -2024,126 +1998,6 @@ static void usage(void)
     fputs("type `nasm -h' for help\n", error_file);
 }
 
-#define BUF_DELTA 512
-
-static FILE *no_pp_fp;
-static ListGen *no_pp_list;
-static int32_t no_pp_lineinc;
-
-static void no_pp_reset(char *file, int pass, ListGen * listgen,
-			StrList **deplist)
-{
-    src_set_fname(nasm_strdup(file));
-    src_set_linnum(0);
-    no_pp_lineinc = 1;
-    no_pp_fp = fopen(file, "r");
-    if (!no_pp_fp)
-        nasm_error(ERR_FATAL | ERR_NOFILE,
-		   "unable to open input file `%s'", file);
-    no_pp_list = listgen;
-    (void)pass;                 /* placate compilers */
-
-    if (deplist) {
-	StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
-	sl->next = NULL;
-	strcpy(sl->str, file);
-	*deplist = sl;
-    }
-}
-
-static char *no_pp_getline(void)
-{
-    char *buffer, *p, *q;
-    int bufsize;
-
-    bufsize = BUF_DELTA;
-    buffer = nasm_malloc(BUF_DELTA);
-    src_set_linnum(src_get_linnum() + no_pp_lineinc);
-
-    while (1) {                 /* Loop to handle %line */
-
-        p = buffer;
-        while (1) {             /* Loop to handle long lines */
-            q = fgets(p, bufsize - (p - buffer), no_pp_fp);
-            if (!q)
-                break;
-            p += strlen(p);
-            if (p > buffer && p[-1] == '\n')
-                break;
-            if (p - buffer > bufsize - 10) {
-                int offset;
-                offset = p - buffer;
-                bufsize += BUF_DELTA;
-                buffer = nasm_realloc(buffer, bufsize);
-                p = buffer + offset;
-            }
-        }
-
-        if (!q && p == buffer) {
-            nasm_free(buffer);
-            return NULL;
-        }
-
-        /*
-         * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
-         * them are present at the end of the line.
-         */
-        buffer[strcspn(buffer, "\r\n\032")] = '\0';
-
-        if (!nasm_strnicmp(buffer, "%line", 5)) {
-            int32_t ln;
-            int li;
-            char *nm = nasm_malloc(strlen(buffer));
-            if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
-                nasm_free(src_set_fname(nm));
-                src_set_linnum(ln);
-                no_pp_lineinc = li;
-                continue;
-            }
-            nasm_free(nm);
-        }
-        break;
-    }
-
-    no_pp_list->line(LIST_READ, buffer);
-
-    return buffer;
-}
-
-static void no_pp_cleanup(int pass)
-{
-    (void)pass;                     /* placate GCC */
-    if (no_pp_fp) {
-        fclose(no_pp_fp);
-        no_pp_fp = NULL;
-    }
-}
-
-static void no_pp_extra_stdmac(macros_t *macros)
-{
-    (void)macros;
-}
-
-static void no_pp_pre_define(char *definition)
-{
-    (void)definition;
-}
-
-static void no_pp_pre_undefine(char *definition)
-{
-    (void)definition;
-}
-
-static void no_pp_pre_include(char *fname)
-{
-    (void)fname;
-}
-
-static void no_pp_include_path(char *path)
-{
-    (void)path;
-}
-
 static uint32_t get_cpu(char *value)
 {
     if (!strcmp(value, "8086"))
diff --git a/nasm.h b/nasm.h
index 48887f2..f7dd060 100644
--- a/nasm.h
+++ b/nasm.h
@@ -394,6 +394,7 @@ struct preproc_ops {
 };
 
 extern struct preproc_ops nasmpp;
+extern struct preproc_ops preproc_nop;
 
 /*
  * Some lexical properties of the NASM source language, included
diff --git a/preproc-nop.c b/preproc-nop.c
new file mode 100644
index 0000000..b43bd80
--- /dev/null
+++ b/preproc-nop.c
@@ -0,0 +1,184 @@
+/* ----------------------------------------------------------------------- *
+ *
+ *   Copyright 1996-2012 The NASM Authors - All Rights Reserved
+ *   See the file AUTHORS included with the NASM distribution for
+ *   the specific copyright holders.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following
+ *   conditions are met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above
+ *     copyright notice, this list of conditions and the following
+ *     disclaimer in the documentation and/or other materials provided
+ *     with the distribution.
+ *
+ *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
+ *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
+ *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * This is a null preprocessor which just copies lines from input
+ * to output. It's used when someone explicitly requests that NASM
+ * not preprocess their source file.
+ */
+
+#include "compiler.h"
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <time.h>
+
+#include "nasm.h"
+#include "nasmlib.h"
+#include "preproc.h"
+
+#define BUF_DELTA 512
+
+static FILE *nop_fp;
+static ListGen *nop_list;
+static int32_t nop_lineinc;
+
+static void nop_reset(char *file, int pass, ListGen *listgen, StrList **deplist)
+{
+    src_set_fname(nasm_strdup(file));
+    src_set_linnum(0);
+    nop_lineinc = 1;
+    nop_fp = fopen(file, "r");
+
+    if (!nop_fp)
+        nasm_error(ERR_FATAL | ERR_NOFILE,
+		   "unable to open input file `%s'", file);
+    nop_list = listgen;
+    (void)pass;                 /* placate compilers */
+
+    if (deplist) {
+	StrList *sl = nasm_malloc(strlen(file)+1+sizeof sl->next);
+	sl->next = NULL;
+	strcpy(sl->str, file);
+	*deplist = sl;
+    }
+}
+
+static char *nop_getline(void)
+{
+    char *buffer, *p, *q;
+    int bufsize;
+
+    bufsize = BUF_DELTA;
+    buffer = nasm_malloc(BUF_DELTA);
+    src_set_linnum(src_get_linnum() + nop_lineinc);
+
+    while (1) {                 /* Loop to handle %line */
+
+        p = buffer;
+        while (1) {             /* Loop to handle long lines */
+            q = fgets(p, bufsize - (p - buffer), nop_fp);
+            if (!q)
+                break;
+            p += strlen(p);
+            if (p > buffer && p[-1] == '\n')
+                break;
+            if (p - buffer > bufsize - 10) {
+                int offset;
+                offset = p - buffer;
+                bufsize += BUF_DELTA;
+                buffer = nasm_realloc(buffer, bufsize);
+                p = buffer + offset;
+            }
+        }
+
+        if (!q && p == buffer) {
+            nasm_free(buffer);
+            return NULL;
+        }
+
+        /*
+         * Play safe: remove CRs, LFs and any spurious ^Zs, if any of
+         * them are present at the end of the line.
+         */
+        buffer[strcspn(buffer, "\r\n\032")] = '\0';
+
+        if (!nasm_strnicmp(buffer, "%line", 5)) {
+            int32_t ln;
+            int li;
+            char *nm = nasm_malloc(strlen(buffer));
+            if (sscanf(buffer + 5, "%"PRId32"+%d %s", &ln, &li, nm) == 3) {
+                nasm_free(src_set_fname(nm));
+                src_set_linnum(ln);
+                nop_lineinc = li;
+                continue;
+            }
+            nasm_free(nm);
+        }
+        break;
+    }
+
+    nop_list->line(LIST_READ, buffer);
+
+    return buffer;
+}
+
+static void nop_cleanup(int pass)
+{
+    (void)pass;                     /* placate GCC */
+    if (nop_fp) {
+        fclose(nop_fp);
+        nop_fp = NULL;
+    }
+}
+
+static void nop_extra_stdmac(macros_t *macros)
+{
+    (void)macros;
+}
+
+static void nop_pre_define(char *definition)
+{
+    (void)definition;
+}
+
+static void nop_pre_undefine(char *definition)
+{
+    (void)definition;
+}
+
+static void nop_pre_include(char *fname)
+{
+    (void)fname;
+}
+
+static void nop_include_path(char *path)
+{
+    (void)path;
+}
+
+struct preproc_ops preproc_nop = {
+    nop_reset,
+    nop_getline,
+    nop_cleanup,
+    nop_extra_stdmac,
+    nop_pre_define,
+    nop_pre_undefine,
+    nop_pre_include,
+    nop_include_path
+};