diff options
| author | Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr> | 2022-01-06 22:01:06 +0100 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2022-01-08 15:46:10 +1000 |
| commit | 961738ffea964daad464389b3f06dd5b245fdf3c (patch) | |
| tree | b2b43bc5ddc29f2960c4538bbc407b84d563d5a8 /target/riscv/helper.h | |
| parent | 2c64ab66c1cdb409ead121357b3e92f8f1800c03 (diff) | |
target/riscv: helper functions to wrap calls to 128-bit csr insns
Given the side effects they have, the csr instructions are realized as
helpers. We extend this existing infrastructure for 128-bit sized csr.
We return 128-bit values using the same approach as for div/rem.
Theses helpers all call a unique function that is currently a fallback
on the 64-bit version.
The trans_csrxx functions supporting 128-bit are yet to be implemented.
Signed-off-by: Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr>
Co-authored-by: Fabien Portas <fabien.portas@grenoble-inp.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20220106210108.138226-17-frederic.petrot@univ-grenoble-alpes.fr
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'target/riscv/helper.h')
| -rw-r--r-- | target/riscv/helper.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/target/riscv/helper.h b/target/riscv/helper.h index a8ee8a362a..6cf6d6ce98 100644 --- a/target/riscv/helper.h +++ b/target/riscv/helper.h @@ -96,6 +96,9 @@ DEF_HELPER_FLAGS_1(fclass_h, TCG_CALL_NO_RWG_SE, tl, i64) DEF_HELPER_2(csrr, tl, env, int) DEF_HELPER_3(csrw, void, env, int, tl) DEF_HELPER_4(csrrw, tl, env, int, tl, tl) +DEF_HELPER_2(csrr_i128, tl, env, int) +DEF_HELPER_4(csrw_i128, void, env, int, tl, tl) +DEF_HELPER_6(csrrw_i128, tl, env, int, tl, tl, tl, tl) #ifndef CONFIG_USER_ONLY DEF_HELPER_2(sret, tl, env, tl) DEF_HELPER_2(mret, tl, env, tl) |