From: Gustavo Romero <gustavo.romero@linaro.org>
To: gdb-patches@sourceware.org
Cc: luis.machado@arm.com, thiago.bauermann@linaro.org,
gustavo.romero@linaro.org
Subject: [PATCH v3 2/7] gdb: aarch64: Move MTE address check out of set_memtag
Date: Thu, 4 Apr 2024 06:48:14 +0000 [thread overview]
Message-ID: <20240404064819.2848899-3-gustavo.romero@linaro.org> (raw)
In-Reply-To: <20240404064819.2848899-1-gustavo.romero@linaro.org>
Move MTE address check out of set_memtag and add this check to the
upper layer, before set_memtag is called. This is a preparation for
using a target hook instead of a gdbarch hook MTE address checks.
Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org>
---
gdb/aarch64-linux-tdep.c | 4 ----
gdb/printcmd.c | 5 +++++
2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/gdb/aarch64-linux-tdep.c b/gdb/aarch64-linux-tdep.c
index 50055ac3f48..8e6e63d4dcb 100644
--- a/gdb/aarch64-linux-tdep.c
+++ b/gdb/aarch64-linux-tdep.c
@@ -2525,10 +2525,6 @@ aarch64_linux_set_memtags (struct gdbarch *gdbarch, struct value *address,
/* Remove the top byte. */
addr = gdbarch_remove_non_address_bits (gdbarch, addr);
- /* Make sure we are dealing with a tagged address to begin with. */
- if (!aarch64_linux_tagged_address_p (gdbarch, address))
- return false;
-
/* With G being the number of tag granules and N the number of tags
passed in, we can have the following cases:
diff --git a/gdb/printcmd.c b/gdb/printcmd.c
index cb0d32aa4bc..774e3ec74ae 100644
--- a/gdb/printcmd.c
+++ b/gdb/printcmd.c
@@ -3127,6 +3127,11 @@ memory_tag_set_allocation_tag_command (const char *args, int from_tty)
/* Parse the input. */
parse_set_allocation_tag_input (args, &val, &length, tags);
+ /* If the address is not in a region memory mapped with a memory tagging
+ flag, it is no use trying to manipulate its allocation tag. */
+ if (!gdbarch_tagged_address_p (current_inferior ()->arch (), val))
+ show_addr_not_tagged (value_as_address(val));
+
if (!gdbarch_set_memtags (current_inferior ()->arch (), val, length, tags,
memtag_type::allocation))
gdb_printf (_("Could not update the allocation tag(s).\n"));
--
2.34.1
next prev parent reply other threads:[~2024-04-04 6:48 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-04 6:48 [PATCH v3 0/7] Add another way to check tagged addresses on remote targets Gustavo Romero
2024-04-04 6:48 ` [PATCH v3 1/7] gdb: aarch64: Remove MTE address checking from get_memtag Gustavo Romero
2024-04-04 14:11 ` Luis Machado
2024-04-04 6:48 ` Gustavo Romero [this message]
2024-04-04 14:17 ` [PATCH v3 2/7] gdb: aarch64: Move MTE address check out of set_memtag Luis Machado
2024-04-06 23:07 ` Gustavo Romero
2024-04-04 6:48 ` [PATCH v3 3/7] gdb: aarch64: Remove MTE address checking from memtag_matches_p Gustavo Romero
2024-04-04 14:19 ` Luis Machado
2024-04-04 6:48 ` [PATCH v3 4/7] gdb: Use passed gdbarch instead of calling current_inferior Gustavo Romero
2024-04-04 14:20 ` Luis Machado
2024-04-04 6:48 ` [PATCH v3 5/7] gdb: Introduce is_address_tagged target hook Gustavo Romero
2024-04-04 15:45 ` Luis Machado
2024-04-04 16:12 ` Gustavo Romero
2024-04-04 16:20 ` Luis Machado
2024-04-08 20:47 ` Gustavo Romero
2024-04-04 6:48 ` [PATCH v3 6/7] gdb: Add qMemTagAddrCheck packet Gustavo Romero
2024-04-04 16:18 ` Luis Machado
2024-04-04 6:48 ` [PATCH v3 7/7] gdb: Document qMemTagCheckAddr packet Gustavo Romero
2024-04-04 7:40 ` Eli Zaretskii
2024-04-08 19:37 ` Tom Tromey
2024-04-09 13:23 ` Gustavo Romero
2024-04-09 15:33 ` Tom Tromey
2024-04-09 15:52 ` Luis Machado
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