mirror of
https://github.com/Mercury-Language/mercury.git
synced 2026-04-23 21:33:49 +00:00
d465fa53cb
Discussion of these changes can be found on the Mercury developers
mailing list archives from June 2018.
COPYING.LIB:
Add a special linking exception to the LGPL.
*:
Update references to COPYING.LIB.
Clean up some minor errors that have accumulated in copyright
messages.
100 lines
2.9 KiB
C
100 lines
2.9 KiB
C
/*
|
|
** Copyright (C) 1997, 2000 The University of Melbourne.
|
|
** Copyright (C) 2018 The Mercury team.
|
|
** This file is distributed under the terms specified in COPYING.LIB.
|
|
*/
|
|
#ifndef MR_MACHDEPS_M68K_REGS_H
|
|
#define MR_MACHDEPS_M68K_REGS_H
|
|
|
|
/*
|
|
** Machine registers MR_mr0 - MR_mr36 for the Motorola 68000 architecture.
|
|
*/
|
|
|
|
/*
|
|
** WARNING: THIS FILE IS COMPLETELY UNTESTED!
|
|
**
|
|
** We don't have a 68k machine to test it on.
|
|
** We'd be happy to accept donations, though...
|
|
**
|
|
** To enable the use of this file, add a case for it to `../regs.h'.
|
|
*/
|
|
|
|
/*
|
|
** Register a7 is the C stack pointer.
|
|
** Register a6 is the C frame pointer.
|
|
** Register a5 is the GOT (Global Offset Table) register used for
|
|
** position independent code.
|
|
** Registers d0, d1, a0, and a1 are callee-save.
|
|
** That leaves us registers a2-a4, and d2-d7 to play with.
|
|
**
|
|
** It's a pity that the m68k has separate address and data registers,
|
|
** it doesn't really suit our RISC-inspired virtual machine model.
|
|
** Oh well, I guess we'll just have to use the data registers and
|
|
** see what happens.
|
|
*/
|
|
|
|
#define MR_NUM_REAL_REGS 5
|
|
|
|
register MR_Word MR_mr0 __asm__("a2"); /* sp */
|
|
register MR_Word MR_mr1 __asm__("a3"); /* succip */
|
|
register MR_Word MR_mr2 __asm__("d2"); /* r1 */
|
|
register MR_Word MR_mr3 __asm__("d3"); /* r2 */
|
|
register MR_Word MR_mr4 __asm__("d4"); /* r3 */
|
|
|
|
#define MR_save_regs_to_mem(save_area) ( \
|
|
save_area[0] = MR_mr0, \
|
|
save_area[1] = MR_mr1, \
|
|
save_area[2] = MR_mr2, \
|
|
save_area[3] = MR_mr3, \
|
|
save_area[4] = MR_mr4, \
|
|
(void)0 \
|
|
)
|
|
|
|
#define MR_restore_regs_from_mem(save_area) ( \
|
|
MR_mr0 = save_area[0], \
|
|
MR_mr1 = save_area[1], \
|
|
MR_mr2 = save_area[2], \
|
|
MR_mr3 = save_area[3], \
|
|
MR_mr4 = save_area[4], \
|
|
(void)0 \
|
|
)
|
|
|
|
#define MR_save_transient_regs_to_mem(save_area) ((void)0)
|
|
#define MR_restore_transient_regs_from_mem(save_area) ((void)0)
|
|
|
|
#define MR_mr5 MR_fake_reg[5]
|
|
#define MR_mr6 MR_fake_reg[6]
|
|
#define MR_mr7 MR_fake_reg[7]
|
|
#define MR_mr8 MR_fake_reg[8]
|
|
#define MR_mr9 MR_fake_reg[9]
|
|
#define MR_mr10 MR_fake_reg[10]
|
|
#define MR_mr11 MR_fake_reg[11]
|
|
#define MR_mr12 MR_fake_reg[12]
|
|
#define MR_mr13 MR_fake_reg[13]
|
|
#define MR_mr14 MR_fake_reg[14]
|
|
#define MR_mr15 MR_fake_reg[15]
|
|
#define MR_mr16 MR_fake_reg[16]
|
|
#define MR_mr17 MR_fake_reg[17]
|
|
#define MR_mr18 MR_fake_reg[18]
|
|
#define MR_mr19 MR_fake_reg[19]
|
|
#define MR_mr20 MR_fake_reg[20]
|
|
#define MR_mr21 MR_fake_reg[21]
|
|
#define MR_mr22 MR_fake_reg[22]
|
|
#define MR_mr23 MR_fake_reg[23]
|
|
#define MR_mr24 MR_fake_reg[24]
|
|
#define MR_mr25 MR_fake_reg[25]
|
|
#define MR_mr26 MR_fake_reg[26]
|
|
#define MR_mr27 MR_fake_reg[27]
|
|
#define MR_mr28 MR_fake_reg[28]
|
|
#define MR_mr29 MR_fake_reg[29]
|
|
#define MR_mr30 MR_fake_reg[30]
|
|
#define MR_mr31 MR_fake_reg[31]
|
|
#define MR_mr32 MR_fake_reg[32]
|
|
#define MR_mr33 MR_fake_reg[33]
|
|
#define MR_mr34 MR_fake_reg[34]
|
|
#define MR_mr35 MR_fake_reg[35]
|
|
#define MR_mr36 MR_fake_reg[36]
|
|
#define MR_mr37 MR_fake_reg[37]
|
|
|
|
#endif /* not MR_MACHDEPS_M68K_REGS_H */
|