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[Qemu-devel] [PATCH Risu 3/7] risu_ppc64le: implement sign extend for sm
From: |
Jose Ricardo Ziviani |
Subject: |
[Qemu-devel] [PATCH Risu 3/7] risu_ppc64le: implement sign extend for small neg constants |
Date: |
Sat, 4 Feb 2017 00:17:18 -0200 |
Signed-off-by: Jose Ricardo Ziviani <address@hidden>
---
risugen_ppc64.pm | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/risugen_ppc64.pm b/risugen_ppc64.pm
index 40f3d4f..561c17b 100644
--- a/risugen_ppc64.pm
+++ b/risugen_ppc64.pm
@@ -75,6 +75,13 @@ sub write_add_ri($$$)
insn32((0xe << 26) | ($rt << 21) | ($ra << 16) | ($imm & 0xffff));
}
+sub write_sxt32($$)
+{
+ my ($ra, $rs) = @_;
+
+ insn32((0x1f << 26) | ($rs << 21) | ($ra << 16) | 0x7b4);
+}
+
sub write_mov_ri($$)
{
# We always use a MOVW/MOVT pair, for simplicity.
@@ -87,10 +94,10 @@ sub write_mov_ri($$)
write_mov_ri16($rd, $imm);
}
- #if ($is_aarch64 && $imm < 0) {
+ if ($imm < 0) {
# sign extend to allow small negative imm constants
- # write_sxt32($rd, $rd);
- #}
+ write_sxt32($rd, $rd);
+ }
}
sub write_random_ppc64_fpdata()
--
2.7.4
- [Qemu-devel] [PATCH Risu 0/7] Risu PPC improvements, Jose Ricardo Ziviani, 2017/02/03
- [Qemu-devel] [PATCH Risu 3/7] risu_ppc64le: implement sign extend for small neg constants,
Jose Ricardo Ziviani <=
- [Qemu-devel] [PATCH Risu 2/7] risu_ppc64le: fix 32-bit mov immediate, Jose Ricardo Ziviani, 2017/02/03
- [Qemu-devel] [PATCH Risu 1/7] risu_ppc64le: improve xsrqpi[x] and xsrqpxp instructions, Jose Ricardo Ziviani, 2017/02/03
- [Qemu-devel] [PATCH Risu 4/7] risu_ppc64le: implement FP random data for test improvement, Jose Ricardo Ziviani, 2017/02/03
- [Qemu-devel] [PATCH Risu 5/7] risu_ppc64le: stop loading data to register 1 and 13, Jose Ricardo Ziviani, 2017/02/03
- [Qemu-devel] [PATCH Risu 6/7] risu_ppc64le: remove fancy shell character cont from messages, Jose Ricardo Ziviani, 2017/02/03
- [Qemu-devel] [PATCH Risu 7/7] risu_ppc64le: fix minor code style in assembly test code, Jose Ricardo Ziviani, 2017/02/03
- Re: [Qemu-devel] [PATCH Risu 0/7] Risu PPC improvements, Peter Maydell, 2017/02/07