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gdb/arm: Fetch initial sp value prior to compare

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For Arm Cortex-M33 with security extensions, there are 4 different
stack pointers (msp_s, msp_ns, psp_s, psp_ns).  In order to
identify the active one, compare the values of the different
stacks. The value of the initial sp register needs to be fetched to
perform this comparison.

Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
Signed-off-by: Yvan Roux <yvan.roux@foss.st.com>
This commit is contained in:
Yvan Roux
2022-06-15 16:00:34 +02:00
parent 75033d0841
commit fe642a5b14
1 changed files with 1 additions and 0 deletions
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gdb/arm-tdep.c
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@@ -341,6 +341,7 @@ arm_cache_init (struct arm_prologue_cache *cache, struct frame_info *frame)
arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (gdbarch);
arm_cache_init (cache, gdbarch);
cache->sp = get_frame_register_unsigned (frame, ARM_SP_REGNUM);
if (tdep->have_sec_ext)
{