Revision bd497938 target-sparc/translate.c
| b/target-sparc/translate.c | ||
|---|---|---|
| 2 | 2 |
SPARC translation |
| 3 | 3 |
|
| 4 | 4 |
Copyright (C) 2003 Thomas M. Ogrisegg <tom@fnord.at> |
| 5 |
Copyright (C) 2003 Fabrice Bellard |
|
| 5 | 6 |
|
| 6 | 7 |
This library is free software; you can redistribute it and/or |
| 7 | 8 |
modify it under the terms of the GNU Lesser General Public |
| ... | ... | |
| 19 | 20 |
*/ |
| 20 | 21 |
|
| 21 | 22 |
/* |
| 22 |
SPARC has two pitfalls: Delay slots and (a)nullification. |
|
| 23 |
This is currently solved as follows: |
|
| 24 |
|
|
| 25 |
'call' instructions simply execute the delay slot before the actual |
|
| 26 |
control transfer instructions. |
|
| 27 |
|
|
| 28 |
'jmpl' instructions execute calculate the destination, then execute |
|
| 29 |
the delay slot and then do the control transfer. |
|
| 30 |
|
|
| 31 |
(conditional) branch instructions are the most difficult ones, as the |
|
| 32 |
delay slot may be nullified (ie. not executed). This happens when a |
|
| 33 |
conditional branch is not executed (thus no control transfer happens) |
|
| 34 |
and the 'anull' bit in the branch instruction opcode is set. This is |
|
| 35 |
currently solved by doing a jump after the delay slot instruction. |
|
| 36 |
|
|
| 37 | 23 |
TODO-list: |
| 38 | 24 |
|
| 39 |
Register window overflow/underflow check
|
|
| 25 |
NPC/PC static optimisations (use JUMP_TB when possible)
|
|
| 40 | 26 |
FPU-Instructions |
| 41 |
Coprocessor-Instructions |
|
| 42 |
Check signedness issues |
|
| 43 | 27 |
Privileged instructions |
| 28 |
Coprocessor-Instructions |
|
| 44 | 29 |
Optimize synthetic instructions |
| 45 | 30 |
Optional alignment and privileged instruction check |
| 46 |
|
|
| 47 |
-- TMO, 09/03/03 |
|
| 48 |
*/ |
|
| 31 |
*/ |
|
| 49 | 32 |
|
| 50 | 33 |
#include <stdarg.h> |
| 51 | 34 |
#include <stdlib.h> |
| ... | ... | |
| 87 | 70 |
|
| 88 | 71 |
static void disas_sparc_insn(DisasContext * dc); |
| 89 | 72 |
|
| 90 |
typedef void (GenOpFunc) (void); |
|
| 91 |
typedef void (GenOpFunc1) (long); |
|
| 92 |
typedef void (GenOpFunc2) (long, long); |
|
| 93 |
typedef void (GenOpFunc3) (long, long, long); |
|
| 94 |
|
|
| 95 | 73 |
static GenOpFunc *gen_op_movl_TN_reg[2][32] = {
|
| 96 | 74 |
{
|
| 97 | 75 |
gen_op_movl_g0_T0, |
Also available in: Unified diff