[1/2] sim: ppc: implement 128-bit register read/writes with sim-endian APIs
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Commit Message
We have APIs in sim-endian for working with 128-bit values like this code
is already doing for 8/16/32/64-bit values. Switch over to that to make
it a bit simpler, and drop the WITH_ALTIVEC check. The code probably is
only used when altivec is enabled, but it doesn't add much to always
compile it in, and avoids #ifdef rot by not actually compiling it.
---
sim/ppc/psim.c | 34 ++++++++--------------------------
1 file changed, 8 insertions(+), 26 deletions(-)
@@ -796,6 +796,7 @@ psim_read_register(psim *system,
unsigned_2 unsigned_2;
unsigned_4 unsigned_4;
unsigned_8 unsigned_8;
+ unsigned_16 unsigned_16;
creg creg;
fpreg fpreg;
fpscreg fpscreg;
@@ -922,21 +923,12 @@ psim_read_register(psim *system,
case 8:
*(unsigned_8*)buf = H2T_8(cooked_buf.unsigned_8);
break;
-#ifdef WITH_ALTIVEC
case 16:
- if (HOST_BYTE_ORDER != CURRENT_TARGET_BYTE_ORDER)
- {
- union { vreg v; unsigned_8 d[2]; } h, t;
- memcpy(&h.v/*dest*/, cooked_buf.bytes/*src*/, description.size);
- { _SWAP_8(t.d[0] =, h.d[1]); }
- { _SWAP_8(t.d[1] =, h.d[0]); }
- memcpy(buf/*dest*/, &t/*src*/, description.size);
- break;
- }
- else
- memcpy(buf/*dest*/, cooked_buf.bytes/*src*/, description.size);
+ {
+ unsigned_16 v = H2T_16(cooked_buf.unsigned_16);
+ memcpy(buf/*dest*/, &v, description.size);
+ }
break;
-#endif
}
}
else {
@@ -965,6 +957,7 @@ psim_write_register(psim *system,
unsigned_2 unsigned_2;
unsigned_4 unsigned_4;
unsigned_8 unsigned_8;
+ unsigned_16 unsigned_16;
creg creg;
fpreg fpreg;
fpscreg fpscreg;
@@ -1014,20 +1007,9 @@ psim_write_register(psim *system,
case 8:
cooked_buf.unsigned_8 = T2H_8(*(unsigned_8*)buf);
break;
-#ifdef WITH_ALTIVEC
case 16:
- if (HOST_BYTE_ORDER != CURRENT_TARGET_BYTE_ORDER)
- {
- union { vreg v; unsigned_8 d[2]; } h, t;
- memcpy(&t.v/*dest*/, buf/*src*/, description.size);
- { _SWAP_8(h.d[0] =, t.d[1]); }
- { _SWAP_8(h.d[1] =, t.d[0]); }
- memcpy(cooked_buf.bytes/*dest*/, &h/*src*/, description.size);
- break;
- }
- else
- memcpy(cooked_buf.bytes/*dest*/, buf/*src*/, description.size);
-#endif
+ cooked_buf.unsigned_16 = T2H_16(*(unsigned_16*)buf);
+ break;
}
}
else {