From: Yvan Roux <yvan.roux@foss.st.com>
Date: Wed, 15 Jun 2022 14:00:34 +0000 (+0200)
Subject: gdb/arm: Fetch initial sp value prior to compare
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=fe642a5b1411502000af9d169122522065dff9ca;p=binutils-gdb.git

gdb/arm: Fetch initial sp value prior to compare

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>
---

diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c
index fe62617d4bf..7c36133a091 100644
--- a/gdb/arm-tdep.c
+++ b/gdb/arm-tdep.c
@@ -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)
     {