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Add macros to check for CPU type and supported instruction set.

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This commit is contained in:
Kugel Fuhr
2025-06-12 14:42:38 +02:00
parent ccdc5b9fea
commit ace81bd36a
2 changed files with 172 additions and 2 deletions
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84
src/cc65/main.c
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@@ -317,6 +317,81 @@ static void SetSys (const char* Sys)
static void DefineCpuMacros (void)
/* Define macros for the target CPU */
{
const char* CPUName;
/* Note: The list of CPUs handled here must match the one checked in
** OptCPU().
*/
switch (CPU) {
/* The following ones are legal CPUs as far as the assembler is
** concerned but are ruled out earlier in the compiler, so this
** function should never see them.
*/
case CPU_NONE:
case CPU_SWEET16:
case CPU_M740:
case CPU_4510:
case CPU_UNKNOWN:
CPUName = (CPU == CPU_UNKNOWN)? "unknown" : CPUNames[CPU];
Internal ("Invalid CPU \"%s\"", CPUName);
break;
case CPU_6502:
DefineNumericMacro ("__CPU_6502__", 1);
break;
case CPU_6502X:
DefineNumericMacro ("__CPU_6502X__", 1);
break;
case CPU_6502DTV:
DefineNumericMacro ("__CPU_6502DTV__", 1);
break;
case CPU_65SC02:
DefineNumericMacro ("__CPU_65SC02__", 1);
break;
case CPU_65C02:
DefineNumericMacro ("__CPU_65C02__", 1);
break;
case CPU_65816:
DefineNumericMacro ("__CPU_65816__", 1);
break;
case CPU_HUC6280:
DefineNumericMacro ("__CPU_HUC6280__", 1);
break;
default:
FAIL ("Unexpected value in switch");
break;
}
/* Define the macros for instruction sets. We only include the ones for
** the available CPUs.
*/
DefineNumericMacro ("__CPU_ISET_6502__", CPU_ISET_6502);
DefineNumericMacro ("__CPU_ISET_6502X__", CPU_ISET_6502X);
DefineNumericMacro ("__CPU_ISET_6502DTV__", CPU_ISET_6502DTV);
DefineNumericMacro ("__CPU_ISET_65SC02__", CPU_ISET_65SC02);
DefineNumericMacro ("__CPU_ISET_65C02__", CPU_ISET_65C02);
DefineNumericMacro ("__CPU_ISET_65816__", CPU_ISET_65816);
DefineNumericMacro ("__CPU_ISET_HUC6280__", CPU_ISET_HUC6280);
/* Now define the macro that contains the bit set with the available
** cpu instructions.
*/
DefineNumericMacro ("__CPU__", CPUIsets[CPU]);
}
static void FileNameOption (const char* Opt, const char* Arg, StrBuf* Name)
/* Handle an option that remembers a file name for later */
{
@@ -477,7 +552,9 @@ static void OptCreateFullDep (const char* Opt attribute ((unused)),
static void OptCPU (const char* Opt, const char* Arg)
/* Handle the --cpu option */
{
/* Find the CPU from the given name */
/* Find the CPU from the given name. We do only accept a certain number
** of CPUs. If the list is changed, be sure to adjust SetCpuMacros().
*/
CPU = FindCPU (Arg);
if (CPU != CPU_6502 && CPU != CPU_6502X && CPU != CPU_65SC02 &&
CPU != CPU_65C02 && CPU != CPU_65816 && CPU != CPU_HUC6280 &&
@@ -1063,7 +1140,9 @@ int main (int argc, char* argv[])
/* Create the output file name if it was not explicitly given */
MakeDefaultOutputName (InputFile);
/* If no CPU given, use the default CPU for the target */
/* If no CPU given, use the default CPU for the target. Define macros that
** allow to query the CPU.
*/
if (CPU == CPU_UNKNOWN) {
if (Target != TGT_UNKNOWN) {
CPU = GetTargetProperties (Target)->DefaultCPU;
@@ -1071,6 +1150,7 @@ int main (int argc, char* argv[])
CPU = CPU_6502;
}
}
DefineCpuMacros ();
/* If no memory model was given, use the default */
if (MemoryModel == MMODEL_UNKNOWN) {