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Add a new .cap pseudo function to the assembler that allows to check for

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certain capabilities of the CPU or target system.
This commit is contained in:
Kugel Fuhr
2025-06-30 21:37:43 +02:00
parent a4a24280f2
commit d4e57278c6
12 changed files with 434 additions and 6 deletions
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78
src/common/capability.h Normal file
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/*****************************************************************************/
/* */
/* capability.h */
/* */
/* Handle CPU or target capabilities */
/* */
/* */
/* */
/* (C) 2026, Kugelfuhr */
/* */
/* */
/* 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 CAPABILITY_H
#define CAPABILITY_H
/* common */
#include "strbuf.h"
/*****************************************************************************/
/* Data */
/*****************************************************************************/
/* Numeric codes for capabilities */
enum capability_t {
CAP_INVALID = -1,
CAP_CPU_HAS_BRA8 = 0, /* CPU has a BRA 8-bit instruction */
CAP_CPU_HAS_INA = 1, /* CPU has DEA/INA */
CAP_CPU_HAS_PUSHXY = 2, /* CPU has PHX/PHY/PLX/PLY */
CAP_CPU_HAS_ZPIND = 3, /* CPU has "(zp)" mode (no offset) */
CAP_CPU_HAS_STZ = 4, /* CPU has "store zero" (!) instruction */
};
typedef enum capability_t capability_t;
/*****************************************************************************/
/* Code */
/*****************************************************************************/
capability_t FindCapability (const char* Name);
/* Find the capability with the given name. Returns CAP_INVALID if there is no
** capability with the given name and a capability code >= 0 instead. The
** capability name is expected in upper case.
*/
/* End of capability.h */
#endif