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Move inline asm parsing into a separate module

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git-svn-id: svn://svn.cc65.org/cc65/trunk@880 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2001-09-09 09:33:06 +00:00
parent bdf212b311
commit 56b8ead112
6 changed files with 172 additions and 55 deletions
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105
src/cc65/asmstmt.c Normal file
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@ -0,0 +1,105 @@
/*****************************************************************************/
/* */
/* asmstmt.c */
/* */
/* Inline assembler statements for the cc65 C compiler */
/* */
/* */
/* */
/* (C) 2001 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#include <string.h>
/* cc65 */
#include "codegen.h"
#include "error.h"
#include "litpool.h"
#include "scanner.h"
#include "asmstmt.h"
/*****************************************************************************/
/* Code */
/*****************************************************************************/
void AsmStatement (void)
/* This function parses ASM statements. The syntax of the ASM directive
* looks like the one defined for C++ (C has no ASM directive), that is,
* a string literal in parenthesis.
*/
{
/* Skip the ASM */
NextToken ();
/* Need left parenthesis */
ConsumeLParen ();
/* String literal */
if (CurTok.Tok != TOK_SCONST) {
Error ("String literal expected");
} else {
/* The string literal may consist of more than one line of assembler
* code. Separate the single lines and output the code.
*/
const char* S = GetLiteral (CurTok.IVal);
while (*S) {
/* Separate the lines */
const char* E = strchr (S, '\n');
if (E) {
/* Found a newline */
g_asmcode (S, E-S);
S = E+1;
} else {
int Len = strlen (S);
g_asmcode (S, Len);
S += Len;
}
}
/* Reset the string pointer, effectivly clearing the string from the
* string table. Since we're working with one token lookahead, this
* will fail if the next token is also a string token, but that's a
* syntax error anyway, because we expect a right paren.
*/
ResetLiteralPoolOffs (CurTok.IVal);
}
/* Skip the string token */
NextToken ();
/* Closing paren needed */
ConsumeRParen ();
}

60
src/cc65/asmstmt.h Normal file
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@ -0,0 +1,60 @@
/*****************************************************************************/
/* */
/* asmstmt.h */
/* */
/* Inline assembler statements for the cc65 C compiler */
/* */
/* */
/* */
/* (C) 2001 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
/* warranty. In no event will the authors be held liable for any damages */
/* arising from the use of this software. */
/* */
/* Permission is granted to anyone to use this software for any purpose, */
/* including commercial applications, and to alter it and redistribute it */
/* freely, subject to the following restrictions: */
/* */
/* 1. The origin of this software must not be misrepresented; you must not */
/* claim that you wrote the original software. If you use this software */
/* in a product, an acknowledgment in the product documentation would be */
/* appreciated but is not required. */
/* 2. Altered source versions must be plainly marked as such, and must not */
/* be misrepresented as being the original software. */
/* 3. This notice may not be removed or altered from any source */
/* distribution. */
/* */
/*****************************************************************************/
#ifndef ASMSTMT_H
#define ASMSTMT_H
/*****************************************************************************/
/* Code */
/*****************************************************************************/
void AsmStatement (void);
/* This function parses ASM statements. The syntax of the ASM directive
* looks like the one defined for C++ (C has no ASM directive), that is,
* a string literal in parenthesis.
*/
/* End of asmstmt.h */
#endif

3
src/cc65/compile.c
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@ -40,6 +40,7 @@
/* cc65 */
#include "asmlabel.h"
#include "asmstmt.h"
#include "codegen.h"
#include "declare.h"
#include "error.h"
@ -87,7 +88,7 @@ static void Parse (void)
/* Check for an ASM statement (which is allowed also on global level) */
if (CurTok.Tok == TOK_ASM) {
doasm ();
AsmStatement ();
ConsumeSemi ();
continue;
}

56
src/cc65/expr.c
View File

@ -17,6 +17,7 @@
/* cc65 */
#include "asmcode.h"
#include "asmlabel.h"
#include "asmstmt.h"
#include "codegen.h"
#include "datatype.h"
#include "declare.h"
@ -758,59 +759,6 @@ static void CallFunction (ExprDesc* lval)
void doasm (void)
/* This function parses ASM statements. The syntax of the ASM directive
* looks like the one defined for C++ (C has no ASM directive), that is,
* a string literal in parenthesis.
*/
{
/* Skip the ASM */
NextToken ();
/* Need left parenthesis */
ConsumeLParen ();
/* String literal */
if (CurTok.Tok != TOK_SCONST) {
Error ("String literal expected");
} else {
/* The string literal may consist of more than one line of assembler
* code. Separate the single lines and output the code.
*/
const char* S = GetLiteral (CurTok.IVal);
while (*S) {
/* Allow lines up to 256 bytes */
const char* E = strchr (S, '\n');
if (E) {
/* Found a newline */
g_asmcode (S, E-S);
S = E+1;
} else {
int Len = strlen (S);
g_asmcode (S, Len);
S += Len;
}
}
/* Reset the string pointer, effectivly clearing the string from the
* string table. Since we're working with one token lookahead, this
* will fail if the next token is also a string token, but that's a
* syntax error anyway, because we expect a right paren.
*/
ResetLiteralPoolOffs (CurTok.IVal);
}
/* Skip the string token */
NextToken ();
/* Closing paren needed */
ConsumeRParen ();
}
static int primary (ExprDesc* lval)
/* This is the lowest level of the expression parser. */
{
@ -977,7 +925,7 @@ static int primary (ExprDesc* lval)
/* ASM statement? */
if (CurTok.Tok == TOK_ASM) {
doasm ();
AsmStatement ();
lval->Type = type_void;
lval->Flags = E_MEXPR;
lval->ConstVal = 0;

1
src/cc65/make/gcc.mak
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@ -25,6 +25,7 @@ LDFLAGS=
OBJS = anonname.o \
asmcode.o \
asmlabel.o \
asmstmt.o \
codeent.o \
codegen.o \
codelab.o \

2
src/cc65/make/watcom.mak
View File

@ -70,6 +70,7 @@ CCCFG = $(CCCFG) -i=..\common
OBJS = anonname.obj \
asmcode.obj \
asmlabel.obj \
asmstmt.obj \
codeent.obj \
codegen.obj \
codelab.obj \
@ -138,6 +139,7 @@ NAME $<
FILE anonname.obj
FILE asmcode.obj
FILE asmlabel.obj
FILE asmstmt.obj
FILE codeent.obj
FILE codegen.obj
FILE codelab.obj