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From: Yvan Roux <yroux@sourceware.org> To: gdb-cvs@sourceware.org Subject: [binutils-gdb] gdb/arm: Fetch initial sp value prior to compare Date: Wed, 15 Jun 2022 14:09:34 +0000 (GMT) [thread overview] Message-ID: <20220615140934.C12F83858D32@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=fe642a5b1411502000af9d169122522065dff9ca commit fe642a5b1411502000af9d169122522065dff9ca Author: Yvan Roux <yvan.roux@foss.st.com> Date: Wed Jun 15 16:00:34 2022 +0200 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: --- gdb/arm-tdep.c | 1 + 1 file changed, 1 insertion(+) 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) {
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