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authorAlec Roelke <alec.roelke@gmail.com>2018-06-10 18:41:34 -0400
committerAlec Roelke <alec.roelke@gmail.com>2018-07-28 18:49:16 +0000
commita27ce59a39ec8fa20a3c4e9fa53e9b3db1199e91 (patch)
treed230b106cca136fba2b559ceb8f17843798eaa69 /src/arch/arm/tlbi_op.hh
parent76e7aec54256696dfdc9567c7ea325fb07c48ef1 (diff)
downloadgem5-a27ce59a39ec8fa20a3c4e9fa53e9b3db1199e91.tar.xz
arch-riscv: Add xret instructions
This patch adds the uret, sret, and mret instructions for use with returning from user-, supervisor-, and machine-level code, respectively. These instructions read the STATUS register to determine the previous privilege level and modify it to re-enable interrupts at the old privilege level. These instructions can only be executed at the corresponding privilege level or higher. Change-Id: I6125c31cb2fdcc3f83eca86910519e81ffbbbfc9 Reviewed-on: https://gem5-review.googlesource.com/11136 Maintainer: Alec Roelke <alec.roelke@gmail.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Reviewed-by: Robert Scheffel <robert.scheffel1@tu-dresden.de>
Diffstat (limited to 'src/arch/arm/tlbi_op.hh')
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