On 08/08/14 21:48, Artyom Tarasenko wrote:
Implement Short Floating-Point Store Instructions as described
in the chapter 13.5.2 of UltraSPARC-IIi User's Manual.
Particularly this instructions are used by NetBSD 4.0.1+ /sparc64
Signed-off-by: Artyom Tarasenko <atar4q...@gmail.com>
---
With this patch applied on top of cmd646 patches it's possible to install
and boot NetBSD 6.1.4 /sparc64.
target-sparc/ldst_helper.c | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git a/target-sparc/ldst_helper.c b/target-sparc/ldst_helper.c
index 03bd9f9..ca65e8d 100644
--- a/target-sparc/ldst_helper.c
+++ b/target-sparc/ldst_helper.c
@@ -2154,7 +2154,6 @@ void helper_stf_asi(CPUSPARCState *env, target_ulong
addr, int asi, int size,
unsigned int i;
target_ulong val;
- helper_check_align(env, addr, 3);
addr = asi_address_mask(env, asi, addr);
switch (asi) {
@@ -2192,7 +2191,21 @@ void helper_stf_asi(CPUSPARCState *env, target_ulong
addr, int asi, int size,
}
return;
+ case 0xd2: /* 16-bit floating point load primary */
+ case 0xd3: /* 16-bit floating point load secondary */
+ case 0xda: /* 16-bit floating point load primary, LE */
+ case 0xdb: /* 16-bit floating point load secondary, LE */
+ helper_check_align(env, addr, 1);
+ /* Fall through */
+ case 0xd0: /* 8-bit floating point load primary */
+ case 0xd1: /* 8-bit floating point load secondary */
+ case 0xd8: /* 8-bit floating point load primary, LE */
+ case 0xd9: /* 8-bit floating point load secondary, LE */
+ val = env->fpr[rd/2].l.lower;
+ helper_st_asi(env, addr, val, asi & 0x8d, ((asi & 2) >> 1) + 1);
+ return;
default:
+ helper_check_align(env, addr, 3);
break;
}
Great work! I can confirm that this does indeed allow NetBSD SPARC64 to
boot in my tests here.
Tested-by: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk>
I'd be happy to take this through my qemu-sparc tree if Richard/Blue can
give a Reviewed-by.
ATB,
Mark.
