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| author | Jeff Law <law@redhat.com> | 1996-04-06 00:21:35 +0000 |
|---|---|---|
| committer | Jeff Law <law@redhat.com> | 1996-04-06 00:21:35 +0000 |
| commit | e24146ec9529e0c028962910ac2efba45e42b9cf (patch) | |
| tree | d76ec6064bb5b32bb113de6327ac4ad449543132 /sim/h8300 | |
| parent | d2f6ce6ac289c14bc476306a303d8d27793dac06 (diff) | |
| download | gdb-e24146ec9529e0c028962910ac2efba45e42b9cf.zip gdb-e24146ec9529e0c028962910ac2efba45e42b9cf.tar.gz gdb-e24146ec9529e0c028962910ac2efba45e42b9cf.tar.bz2 | |
* compile.c (decode): Use "bit" to hold L_3 immediates instead
of holding them in "abs". Handle ABS8MEM memory references aka
8-bit area. Replace ABSMOV references with ABS8MEM.
So we've got a chance of simulating something like btst #0,@40:8 correctly.
hmse.
Diffstat (limited to 'sim/h8300')
| -rw-r--r-- | sim/h8300/ChangeLog | 11 | ||||
| -rw-r--r-- | sim/h8300/compile.c | 25 |
2 files changed, 32 insertions, 4 deletions
diff --git a/sim/h8300/ChangeLog b/sim/h8300/ChangeLog index b96f031..f573246 100644 --- a/sim/h8300/ChangeLog +++ b/sim/h8300/ChangeLog @@ -1,3 +1,14 @@ +Fri Apr 5 17:20:59 1996 Jeffrey A Law (law@cygnus.com) + + * compile.c (decode): Use "bit" to hold L_3 immediates instead + of holding them in "abs". Handle ABS8MEM memory references aka + 8-bit area. Replace ABSMOV references with ABS8MEM. + +Wed Mar 13 17:43:56 1996 Jeffrey A Law (law@cygnus.com) + + * compile.c (fetch): Handle accesses to the exception/function + vectors. + Mon Mar 11 09:53:25 1996 Doug Evans <dje@charmed.cygnus.com> * compile.c: #include "wait.h". diff --git a/sim/h8300/compile.c b/sim/h8300/compile.c index 2545b1d..f55249e 100644 --- a/sim/h8300/compile.c +++ b/sim/h8300/compile.c @@ -153,6 +153,7 @@ decode (addr, data, dst) int rdisp = 0; int abs = 0; int plen = 0; + int bit = 0; struct h8_opcode *q = h8_opcodes; int size = 0; @@ -286,7 +287,13 @@ decode (addr, data, dst) { abs = SEXTCHAR (data[len >> 1]); } - else + else if (looking_for & ABS8MEM) + { + plen = 8; + abs = h8300hmode ? ~0xff0000ff : ~0xffff00ff; + abs |= data[len >> 1] & 0xff ; + } + else { abs = data[len >> 1] & 0xff; } @@ -295,7 +302,7 @@ decode (addr, data, dst) { plen = 3; - abs = thisnib; + bit = thisnib; } else if (looking_for == E) { @@ -321,7 +328,12 @@ decode (addr, data, dst) p = &(dst->src); } - if (x & (IMM | KBIT | DBIT)) + if (x & (L_3)) + { + p->type = X (OP_IMM, size); + p->literal = bit; + } + else if (x & (IMM | KBIT | DBIT)) { p->type = X (OP_IMM, size); p->literal = abs; @@ -351,7 +363,7 @@ decode (addr, data, dst) p->reg = rn & 0x7; p->literal = 0; } - else if (x & (ABS | ABSJMP | ABSMOV)) + else if (x & (ABS | ABSJMP | ABS8MEM)) { p->type = X (OP_DISP, size); p->literal = abs; @@ -574,6 +586,11 @@ fetch (arg, n) t &= cpu.mask; return t; + case X (OP_MEM, SW): + t = GET_MEMORY_W (abs); + t &= cpu.mask; + return t; + default: abort (); |