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authorPeter Maydell <peter.maydell@linaro.org>2021-06-17 13:16:28 +0100
committerPeter Maydell <peter.maydell@linaro.org>2021-06-21 17:12:52 +0100
commitd93a468d1302f29afcb1e368fb39da3fe024fc39 (patch)
tree8fc675bf353a29557f5298ceff549866c2b6f24c /target/arm/translate-mve.c
parent3e6d6e88d915d0fea1fbbf530801e2aec9df2d0d (diff)
downloadqemu-arm-d93a468d1302f29afcb1e368fb39da3fe024fc39.tar.gz
target/arm: Make VMOV scalar <-> gpreg beatwise for MVE
In a CPU with MVE, the VMOV (vector lane to general-purpose register) and VMOV (general-purpose register to vector lane) insns are not predicated, but they are subject to beatwise execution if they are not in an IT block. Since our implementation always executes all 4 beats in one tick, this means only that we need to handle PSR.ECI: * we must do the usual check for bad ECI state * we must advance ECI state if the insn succeeds * if ECI says we should not be executing the beat corresponding to the lane of the vector register being accessed then we should skip performing the move Note that if PSR.ECI is non-zero then we cannot be in an IT block. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210617121628.20116-45-peter.maydell@linaro.org
Diffstat (limited to 'target/arm/translate-mve.c')
-rw-r--r--target/arm/translate-mve.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index 04d84e8846..67462bdf27 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -57,7 +57,7 @@ static bool mve_check_qreg_bank(DisasContext *s, int qmask)
return qmask < 8;
}
-static bool mve_eci_check(DisasContext *s)
+bool mve_eci_check(DisasContext *s)
{
/*
* This is a beatwise insn: check that ECI is valid (not a
@@ -91,7 +91,7 @@ static void mve_update_eci(DisasContext *s)
}
}
-static void mve_update_and_store_eci(DisasContext *s)
+void mve_update_and_store_eci(DisasContext *s)
{
/*
* For insns which don't call a helper function that will call