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140 lines
4.8 KiB
C
140 lines
4.8 KiB
C
/*****************************************************************************/
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/* */
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/* cpu.c */
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/* */
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/* CPU specifications */
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/* */
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/* */
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/* */
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/* (C) 2003-2009, Ullrich von Bassewitz */
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/* Roemerstrasse 52 */
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/* D-70794 Filderstadt */
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/* EMail: uz@cc65.org */
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/* */
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/* */
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/* This software is provided 'as-is', without any expressed or implied */
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/* warranty. In no event will the authors be held liable for any damages */
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/* arising from the use of this software. */
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/* */
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/* Permission is granted to anyone to use this software for any purpose, */
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/* including commercial applications, and to alter it and redistribute it */
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/* freely, subject to the following restrictions: */
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/* */
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/* 1. The origin of this software must not be misrepresented; you must not */
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/* claim that you wrote the original software. If you use this software */
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/* in a product, an acknowledgment in the product documentation would be */
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/* appreciated but is not required. */
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/* 2. Altered source versions must be plainly marked as such, and must not */
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/* be misrepresented as being the original software. */
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/* 3. This notice may not be removed or altered from any source */
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/* distribution. */
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/* */
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/*****************************************************************************/
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/* common */
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#include "addrsize.h"
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#include "check.h"
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#include "cpu.h"
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#include "strutil.h"
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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/* CPU used */
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cpu_t CPU = CPU_UNKNOWN;
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/* Table with target names */
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const char* CPUNames[CPU_COUNT] = {
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"none",
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"6502",
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"6502X",
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"65SC02",
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"65C02",
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"65816",
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"sunplus",
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"sweet16",
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"huc6280",
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};
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/* Tables with CPU instruction sets */
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const unsigned CPUIsets[CPU_COUNT] = {
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CPU_ISET_NONE,
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CPU_ISET_6502,
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CPU_ISET_6502 | CPU_ISET_6502X,
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CPU_ISET_6502 | CPU_ISET_65SC02,
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CPU_ISET_6502 | CPU_ISET_65SC02 | CPU_ISET_65C02,
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CPU_ISET_6502 | CPU_ISET_65SC02 | CPU_ISET_65C02 | CPU_ISET_65816,
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CPU_ISET_SUNPLUS,
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CPU_ISET_SWEET16,
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CPU_ISET_6502 | CPU_ISET_65SC02 | CPU_ISET_65C02 | CPU_ISET_HUC6280,
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};
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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int ValidAddrSizeForCPU (unsigned char AddrSize)
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/* Check if the given address size is valid for the current CPU */
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{
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switch (AddrSize) {
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case ADDR_SIZE_DEFAULT:
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/* Always supported */
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return 1;
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case ADDR_SIZE_ZP:
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/* Not supported by None and Sweet16 */
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return (CPU != CPU_NONE && CPU != CPU_SWEET16);
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case ADDR_SIZE_ABS:
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/* Not supported by None */
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return (CPU != CPU_NONE);
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case ADDR_SIZE_FAR:
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/* Only supported by 65816 */
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return (CPU == CPU_65816);
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case ADDR_SIZE_LONG:
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/* Not supported by any CPU */
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return 0;
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default:
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FAIL ("Invalid address size");
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/* NOTREACHED */
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return 0;
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}
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}
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cpu_t FindCPU (const char* Name)
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/* Find a CPU by name and return the target id. CPU_UNKNOWN is returned if
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* the given name is no valid target.
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*/
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{
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unsigned I;
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/* Check all CPU names */
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for (I = 0; I < CPU_COUNT; ++I) {
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if (StrCaseCmp (CPUNames [I], Name) == 0) {
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return (cpu_t)I;
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}
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}
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/* Not found */
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return CPU_UNKNOWN;
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}
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