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Round TF_SIZE up to the stack alignment (16-bytes).

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The kernel adjusts the stack by TF_SIZE and the RISC-V ABI requires
that it remain 16-byte aligned.

Reported by:	CHERI, jrtc27
Reviewed by:	mhorne
Obtained from:	CheriBSD
Sponsored by:	DARPA
Differential Revision:	https://reviews.freebsd.org/D26328
This commit is contained in:
Brooks Davis 2020-09-04 21:55:22 +00:00
parent 29e1fceb73
commit 46b974a9db
1 changed files with 1 additions and 1 deletions
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2
sys/riscv/riscv/genassym.c
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@ -87,7 +87,7 @@ ASSYM(TD_FRAME, offsetof(struct thread, td_frame));
ASSYM(TD_MD, offsetof(struct thread, td_md));
ASSYM(TD_LOCK, offsetof(struct thread, td_lock));
ASSYM(TF_SIZE, sizeof(struct trapframe));
ASSYM(TF_SIZE, roundup2(sizeof(struct trapframe), STACKALIGNBYTES + 1));
ASSYM(TF_RA, offsetof(struct trapframe, tf_ra));
ASSYM(TF_SP, offsetof(struct trapframe, tf_sp));
ASSYM(TF_GP, offsetof(struct trapframe, tf_gp));