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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

76 lines
1.5 KiB
C

#ifndef S12Z_H
#define S12Z_H
/* This byte is used to prefix instructions in "page 2" of the opcode
space. */
#define PAGE2_PREBYTE (0x1b)
struct reg
{
char *name; /* The canonical name of the register. */
int bytes; /* its size, in bytes. */
};
/* How many registers do we have. Actually there are only 13,
because CCL and CCH are the low and high bytes of CCW. But
for assemnbly / disassembly purposes they are considered
distinct registers. */
#define S12Z_N_REGISTERS 15
extern const struct reg registers[S12Z_N_REGISTERS];
/* Solaris defines REG_Y in sys/regset.h; undef it here to avoid
breaking compilation when this target is enabled. */
#undef REG_Y
enum
{
REG_D2 = 0,
REG_D3,
REG_D4,
REG_D5,
REG_D0,
REG_D1,
REG_D6,
REG_D7,
REG_X,
REG_Y,
REG_S,
REG_P,
REG_CCH,
REG_CCL,
REG_CCW
};
/* Any of the registers d0, d1, ... d7. */
#define REG_BIT_Dn \
((0x1U << REG_D2) | \
(0x1U << REG_D3) | \
(0x1U << REG_D4) | \
(0x1U << REG_D5) | \
(0x1U << REG_D6) | \
(0x1U << REG_D7) | \
(0x1U << REG_D0) | \
(0x1U << REG_D1))
/* Any of the registers x, y or z. */
#define REG_BIT_XYS \
((0x1U << REG_X) | \
(0x1U << REG_Y) | \
(0x1U << REG_S))
/* Any of the registers x, y, z or p. */
#define REG_BIT_XYSP \
((0x1U << REG_X) | \
(0x1U << REG_Y) | \
(0x1U << REG_S) | \
(0x1U << REG_P))
/* The x register or the y register. */
#define REG_BIT_XY \
((0x1U << REG_X) | \
(0x1U << REG_Y))
#endif