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target/arm: Inform helpers whether a PAC instruction is 'combined'

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An instruction is a 'combined' Pointer Authentication instruction
if it does something in addition to PAC -- for instance, branching
to or loading an address from the authenticated pointer.

Knowing whether a PAC operation is 'combined' is needed to
implement FEAT_FPACCOMBINE.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Aaron Lindsay <aaron@os.amperecomputing.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230829232335.965414-9-richard.henderson@linaro.org
Message-Id: <20230609172324.982888-7-aaron@os.amperecomputing.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Aaron Lindsay 2023-08-29 16:23:31 -07:00 • committed by Peter Maydell
parent c7c807f6dd
commit 28b9dcb74b
3 changed files with 68 additions and 19 deletions
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4
target/arm/tcg/helper-a64.h
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@ -90,9 +90,13 @@ DEF_HELPER_FLAGS_3(pacda, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(pacdb, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(pacga, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(autia, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(autia_combined, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(autib, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(autib_combined, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(autda, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(autda_combined, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(autdb, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_3(autdb_combined, TCG_CALL_NO_WG, i64, env, i64, i64)
DEF_HELPER_FLAGS_2(xpaci, TCG_CALL_NO_RWG_SE, i64, env, i64)
DEF_HELPER_FLAGS_2(xpacd, TCG_CALL_NO_RWG_SE, i64, env, i64)