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If main() takes arguments, generate a forced import to a special module

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constructor which will setup command line arguments.


git-svn-id: svn://svn.cc65.org/cc65/trunk@2011 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2003-03-07 12:41:47 +00:00
parent 9257570050
commit 065b8f2596
3 changed files with 34 additions and 7 deletions
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16
src/cc65/codegen.c
View File

@ -157,16 +157,16 @@ void g_preamble (void)
/* Identify the compiler version */
AddTextLine (";");
AddTextLine ("; File generated by cc65 v %u.%u.%u",
VER_MAJOR, VER_MINOR, VER_PATCH);
VER_MAJOR, VER_MINOR, VER_PATCH);
AddTextLine (";");
/* Insert some object file options */
AddTextLine ("\t.fopt\t\tcompiler,\"cc65 v %u.%u.%u\"",
VER_MAJOR, VER_MINOR, VER_PATCH);
VER_MAJOR, VER_MINOR, VER_PATCH);
/* If we're producing code for some other CPU, switch the command set */
if (CPU == CPU_65C02) {
AddTextLine ("\t.pc02");
AddTextLine ("\t.pc02");
}
/* Allow auto import for runtime library routines */
@ -189,7 +189,7 @@ void g_preamble (void)
void g_fileinfo (const char* Name, unsigned long Size, unsigned long MTime)
/* If debug info is enabled, place a file info into the source */
{
{
if (DebugInfo) {
/* We have to place this into the global text segment, so it will
* appear before all .dbg line statements.
@ -387,6 +387,14 @@ void g_defimport (const char* Name, int ZP)
void g_importmainargs (void)
/* Forced import of a special symbol that handles arguments to main */
{
AddTextLine ("\t.forceimport\tinitmainargs");
}
/*****************************************************************************/
/* Load functions for various registers */
/*****************************************************************************/

3
src/cc65/codegen.h
View File

@ -155,6 +155,9 @@ void g_defexport (const char* Name, int ZP);
void g_defimport (const char* Name, int ZP);
/* Import the given label */
void g_importmainargs (void);
/* Forced import of a special symbol that handles arguments to main */
/*****************************************************************************/

22
src/cc65/function.c
View File

@ -6,9 +6,9 @@
/* */
/* */
/* */
/* (C) 2000-2002 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* (C) 2000-2003 Ullrich von Bassewitz */
/* Römerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
@ -369,6 +369,22 @@ void NewFunc (SymEntry* Func)
/* Allocate code and data segments for this function */
Func->V.F.Seg = PushSegments (Func);
/* Special handling for main() */
if (strcmp (Func->Name, "main") == 0) {
/* Main cannot be a fastcall function */
if (IsFastCallFunc (Func->Type)) {
Error ("`main' cannot be declared as __fastcall__");
}
/* If main() takes parameters, generate a forced import to a function
* that will setup these parameters. This way, programs that do not
* need the additional code will not get it.
*/
if (D->ParamCount > 0 || (D->Flags & FD_VARIADIC) != 0) {
g_importmainargs ();
}
}
/* If this is a fastcall function, push the last parameter onto the stack */
if (IsFastCallFunc (Func->Type) && D->ParamCount > 0) {