Date: Tue, 24 May 2016 13:59:14 +0000 (UTC) From: Ruslan Bukin <br@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r300614 - head/sys/riscv/riscv Message-ID: <201605241359.u4ODxE5a000967@repo.freebsd.org>
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Author: br Date: Tue May 24 13:59:13 2016 New Revision: 300614 URL: https://svnweb.freebsd.org/changeset/base/300614 Log: Store the original value of stack pointer to the exception frame (the value we had before supervisor exception occurred). This helps consumers (e.g. DTrace) to not proceed additional calculations. Sponsored by: DARPA, AFRL Sponsored by: HEIF5 Modified: head/sys/riscv/riscv/exception.S Modified: head/sys/riscv/riscv/exception.S ============================================================================== --- head/sys/riscv/riscv/exception.S Tue May 24 13:58:07 2016 (r300613) +++ head/sys/riscv/riscv/exception.S Tue May 24 13:59:13 2016 (r300614) @@ -93,7 +93,9 @@ __FBSDID("$FreeBSD$"); .if \el == 1 /* Store kernel sp */ - sd sp, (TF_SP)(sp) + li t1, TF_SIZE + add t0, sp, t1 + sd t0, (TF_SP)(sp) .else /* Store user sp */ csrr t0, sscratchhome | help
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