The branch stable/13 has been updated by mhorne: URL: https://cgit.FreeBSD.org/src/commit/?id=2d0ad402a075d2c4ef8e47f11c1b3776f7eca666
commit 2d0ad402a075d2c4ef8e47f11c1b3776f7eca666 Author: Mitchell Horne <[email protected]> AuthorDate: 2021-03-04 00:14:42 +0000 Commit: Mitchell Horne <[email protected]> CommitDate: 2021-04-21 13:20:33 +0000 arm: implement kdb watchpoint functions Implement wrappers around the existing debug_monitor interface, to be consumed by MI kernel debugger code. For now, the various db_printf() calls in this code remain. In the future, they could be converted to printf() or removed altogether, to properly decouple the DDB and GDB options. Reviewed by: jhb, kib, markj Sponsored by: NetApp, Inc. Sponsored by: Klara, Inc. (cherry picked from commit 5a2933d0bf9fb0018349b67a39fa85cbb3740779) --- sys/arm/arm/debug_monitor.c | 37 ++++++++++++++++++++++++++++++++++--- sys/arm/include/kdb.h | 2 ++ 2 files changed, 36 insertions(+), 3 deletions(-) diff --git a/sys/arm/arm/debug_monitor.c b/sys/arm/arm/debug_monitor.c index ddf3e8e67b25..55b5f70b2397 100644 --- a/sys/arm/arm/debug_monitor.c +++ b/sys/arm/arm/debug_monitor.c @@ -326,6 +326,35 @@ kdb_cpu_clear_singlestep(void) } } +int +kdb_cpu_set_watchpoint(vm_offset_t addr, size_t size, int access) +{ + enum dbg_access_t dbg_access; + + switch (access) { + case KDB_DBG_ACCESS_R: + dbg_access = HW_WATCHPOINT_R; + break; + case KDB_DBG_ACCESS_W: + dbg_access = HW_WATCHPOINT_W; + break; + case KDB_DBG_ACCESS_RW: + dbg_access = HW_WATCHPOINT_RW; + break; + default: + return (EINVAL); + } + + return (dbg_setup_watchpoint(addr, size, (enum dbg_access_t)access)); +} + +int +kdb_cpu_clr_watchpoint(vm_offset_t addr, size_t size) +{ + + return (dbg_remove_watchpoint(addr, size)); +} + int dbg_setup_watchpoint(db_expr_t addr, db_expr_t size, enum dbg_access_t access) { @@ -624,7 +653,7 @@ dbg_setup_xpoint(struct dbg_wb_conf *conf) if (i == ~0U) { db_printf("Can not find slot for %s, max %d slots supported\n", typestr, dbg_watchpoint_num); - return (ENXIO); + return (EBUSY); } } @@ -645,7 +674,8 @@ dbg_setup_xpoint(struct dbg_wb_conf *conf) cr_size = DBG_WB_CTRL_LEN_8; break; default: - db_printf("Unsupported address size for %s\n", typestr); + db_printf("Unsupported address size for %s: %zu\n", typestr, + conf->size); return (EINVAL); } @@ -667,7 +697,8 @@ dbg_setup_xpoint(struct dbg_wb_conf *conf) cr_access = DBG_WB_CTRL_LOAD | DBG_WB_CTRL_STORE; break; default: - db_printf("Unsupported exception level for %s\n", typestr); + db_printf("Unsupported access type for %s: %d\n", + typestr, conf->access); return (EINVAL); } diff --git a/sys/arm/include/kdb.h b/sys/arm/include/kdb.h index 42677499ed78..728bf211dc62 100644 --- a/sys/arm/include/kdb.h +++ b/sys/arm/include/kdb.h @@ -41,6 +41,8 @@ extern void kdb_cpu_clear_singlestep(void); extern void kdb_cpu_set_singlestep(void); boolean_t kdb_cpu_pc_is_singlestep(db_addr_t); +int kdb_cpu_set_watchpoint(vm_offset_t addr, size_t size, int access); +int kdb_cpu_clr_watchpoint(vm_offset_t addr, size_t size); static __inline void kdb_cpu_sync_icache(unsigned char *addr, size_t size) _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/dev-commits-src-all To unsubscribe, send any mail to "[email protected]"
