From: Torbjorn SVENSSON <torbjorn.svensson@foss.st.com>
To: Luis Machado <luis.machado@arm.com>, <gdb-patches@sourceware.org>
Subject: Re: [PATCH v2] gdb/arm: Include FType bit in EXC_RETURN pattern on v8m
Date: Wed, 23 Nov 2022 14:17:34 +0100 [thread overview]
Message-ID: <6110fde2-6d13-daf8-eeec-ce114181f50c@foss.st.com> (raw)
In-Reply-To: <486f9e2a-bc89-290a-b08a-1c90785c125d@arm.com>
On 2022-11-23 13:46, Luis Machado wrote:
> On 11/23/22 12:17, Torbjörn SVENSSON wrote:
>> For v8m, the EXC_RETURN pattern, without security extension, consists of
>> FType, Mode and SPSEL. These are the same bits that are used in v7m.
>> This patch extends the list of patterns to include also the FType bit
>> and not just Mode and SPSEL bits for v8m targets without security
>> extension.
>>
>> Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
>> ---
>> gdb/arm-tdep.c | 19 +++++++++++++------
>> 1 file changed, 13 insertions(+), 6 deletions(-)
>>
>> diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c
>> index a839f957440..f466b5938e4 100644
>> --- a/gdb/arm-tdep.c
>> +++ b/gdb/arm-tdep.c
>> @@ -828,13 +828,17 @@ arm_m_addr_is_lockup (CORE_ADDR addr)
>> For more details see "B1.5.8 Exception return behavior"
>> in both ARMv6-M and ARMv7-M Architecture Reference Manuals.
>> - In the ARMv8-M Architecture Technical Reference also adds
>> - for implementations without the Security Extension:
>> + From ARMv8-M Architecture Technical Reference, D1.2.95
>> + FType, Mode and SPSEL bits are to be considerd when Security
>> Extension is
>
> considerd -> considered
> when -> when the
>
>> + not implemented.
>> - EXC_RETURN Condition
>> - 0xFFFFFFB0 Return to Handler mode.
>> - 0xFFFFFFB8 Return to Thread mode using the main stack.
>> - 0xFFFFFFBC Return to Thread mode using the process stack. */
>> + EXC_RETURN Return To Return Stack Frame Type
>> + 0xFFFFFFA0 Handler mode Main Extended
>> + 0xFFFFFFA8 Thread mode Main Extended
>> + 0xFFFFFFAC Thread mode Process Extended
>> + 0xFFFFFFB0 Handler mode Main Standard
>> + 0xFFFFFFB8 Thread mode Main Standard
>> + 0xFFFFFFBC Thread mode Process Standard */
>> static int
>> arm_m_addr_is_magic (struct gdbarch *gdbarch, CORE_ADDR addr)
>> @@ -859,6 +863,9 @@ arm_m_addr_is_magic (struct gdbarch *gdbarch,
>> CORE_ADDR addr)
>> switch (addr)
>> {
>> /* Values from ARMv8-M Architecture Technical Reference. */
>> + case 0xffffffa0:
>> + case 0xffffffa8:
>> + case 0xffffffac:
>> case 0xffffffb0:
>> case 0xffffffb8:
>> case 0xffffffbc:
>
> OK with the above addressed.
Pushed.
prev parent reply other threads:[~2022-11-23 13:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-23 12:17 Torbjörn SVENSSON
2022-11-23 12:46 ` Luis Machado
2022-11-23 13:17 ` Torbjorn SVENSSON [this message]
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