Date: Mon, 1 Mar 2021 14:08:23 GMT From: Mitchell Horne <mhorne@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: e152c882738f - main - arm64: add definition for IS_SSTEP_TRAP() Message-ID: <202103011408.121E8NSR040558@gitrepo.freebsd.org>
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The branch main has been updated by mhorne: URL: https://cgit.FreeBSD.org/src/commit/?id=e152c882738ffe26a2f52e420e2a92c014943207 commit e152c882738ffe26a2f52e420e2a92c014943207 Author: Mitchell Horne <mhorne@FreeBSD.org> AuthorDate: 2021-03-01 14:01:25 +0000 Commit: Mitchell Horne <mhorne@FreeBSD.org> CommitDate: 2021-03-01 14:04:23 +0000 arm64: add definition for IS_SSTEP_TRAP() arm64 has a distinct exception code for single-step, so we can use this to detect when an unexpected SS trap is encountered, or when an expected one is not. See db_stop_at_pc(). Reviewed by: markj, jhb MFC after: 5 days Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D28942 --- sys/arm64/include/db_machdep.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/arm64/include/db_machdep.h b/sys/arm64/include/db_machdep.h index 61b58415e41c..105e8e507ce3 100644 --- a/sys/arm64/include/db_machdep.h +++ b/sys/arm64/include/db_machdep.h @@ -38,6 +38,7 @@ #include <machine/trap.h> #define T_BREAKPOINT (EXCP_BRK) +#define T_SINGLESTEP (EXCP_SOFTSTP_EL1) #define T_WATCHPOINT (EXCP_WATCHPT_EL1) typedef vm_offset_t db_addr_t; @@ -58,6 +59,7 @@ typedef long db_expr_t; #define db_set_single_step kdb_cpu_set_singlestep #define IS_BREAKPOINT_TRAP(type, code) (type == T_BREAKPOINT) +#define IS_SSTEP_TRAP(type, code) (type == T_SINGLESTEP) #define IS_WATCHPOINT_TRAP(type, code) (type == T_WATCHPOINT) #define inst_trap_return(ins) (0)
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