From: Christophe Lyon <christophe.lyon@foss.st.com>
To: <gdb-patches@sourceware.org>
Cc: <torbjorn.svensson@st.com>,
Christophe Lyon <christophe.lyon@foss.st.com>
Subject: [PATCH v2 4/5] gdb/arm: Add support for multiple stack pointers on Cortex-M
Date: Thu, 27 Jan 2022 14:32:26 +0100 [thread overview]
Message-ID: <20220127133247.440019-4-christophe.lyon@foss.st.com> (raw)
In-Reply-To: <20220127133247.440019-1-christophe.lyon@foss.st.com>
V8-M architecture with Security extension features four stack pointers
to handle Secure and Non-secure modes.
This patch adds support to switch between them as needed during
unwinding, and replaces all updates of cache->prev_sp with calls to
arm_cache_set_prev_sp.
Co-Authored-By: Torbjorn Svensson <torbjorn.svensson@st.com>
---
gdb/arm-tdep.c | 257 +++++++++++++++++++++++++++++---
gdb/arm-tdep.h | 11 +-
gdb/features/arm/arm-secext.c | 17 +++
gdb/features/arm/arm-secext.xml | 15 ++
4 files changed, 279 insertions(+), 21 deletions(-)
create mode 100644 gdb/features/arm/arm-secext.c
create mode 100644 gdb/features/arm/arm-secext.xml
diff --git a/gdb/arm-tdep.c b/gdb/arm-tdep.c
index 18b7c18d3cc..db8316ea970 100644
--- a/gdb/arm-tdep.c
+++ b/gdb/arm-tdep.c
@@ -275,7 +275,21 @@ struct arm_prologue_cache
/* The stack pointer at the time this frame was created; i.e. the
caller's stack pointer when this function was called. It is used
to identify this frame. */
- CORE_ADDR prev_sp;
+ CORE_ADDR sp;
+
+ /* Additional stack pointers used by M-profile with Security extension. */
+ /* Use msp_s / psp_s to hold the values of msp / psp when there is
+ no Security extension. */
+ CORE_ADDR msp_s;
+ CORE_ADDR msp_ns;
+ CORE_ADDR psp_s;
+ CORE_ADDR psp_ns;
+
+ /* Active stack pointer. */
+ int active_sp_regnum;
+
+ bool have_sec_ext;
+ bool is_m;
/* The frame base for this frame is just prev_sp - frame size.
FRAMESIZE is the distance from the frame pointer to the
@@ -293,6 +307,10 @@ struct arm_prologue_cache
static void
arm_cache_init (struct arm_prologue_cache *cache, struct gdbarch *gdbarch)
{
+ cache->have_sec_ext = false;
+ cache->is_m = false;
+ cache->active_sp_regnum = ARM_SP_REGNUM;
+
cache->framesize = 0;
cache->framereg = 0;
cache->saved_regs = trad_frame_alloc_saved_regs (gdbarch);
@@ -302,9 +320,131 @@ static void
arm_cache_init (struct arm_prologue_cache *cache, struct frame_info *frame)
{
struct gdbarch *gdbarch = get_frame_arch (frame);
- cache->prev_sp = get_frame_register_unsigned (frame, ARM_SP_REGNUM);
+ arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (gdbarch);
+ cache->sp = get_frame_register_unsigned (frame, ARM_SP_REGNUM);
arm_cache_init (cache, gdbarch);
+
+ cache->have_sec_ext = tdep->have_sec_ext;
+ cache->is_m = tdep->is_m;
+
+ /* Initialize stack pointers, and flag the active one. */
+#define INIT_ARM_CACHE_SP(regnum, member) do { \
+ CORE_ADDR val = get_frame_register_unsigned (frame, (regnum)); \
+ if (val == cache->sp) \
+ { \
+ cache->active_sp_regnum = (regnum); \
+ } \
+ (member) = val; \
+ } while (0)
+
+ if (tdep->have_sec_ext)
+ {
+ INIT_ARM_CACHE_SP (tdep->m_profile_msp_s_regnum, cache->msp_s);
+ INIT_ARM_CACHE_SP (tdep->m_profile_psp_s_regnum, cache->psp_s);
+ INIT_ARM_CACHE_SP (tdep->m_profile_msp_ns_regnum, cache->msp_ns);
+ INIT_ARM_CACHE_SP (tdep->m_profile_psp_ns_regnum, cache->psp_ns);
+ /* Use MSP_S as default stack pointer. */
+ if (cache->active_sp_regnum == ARM_SP_REGNUM)
+ cache->active_sp_regnum = tdep->m_profile_msp_s_regnum;
+ }
+ else if (tdep->is_m)
+ {
+ INIT_ARM_CACHE_SP (tdep->m_profile_msp_regnum, cache->msp_s);
+ INIT_ARM_CACHE_SP (tdep->m_profile_psp_regnum, cache->psp_s);
+ }
+ else
+ {
+ INIT_ARM_CACHE_SP (ARM_SP_REGNUM, cache->msp_s);
+ }
+ #undef INIT_ARM_CACHE_SP
+}
+
+static gdb::optional<CORE_ADDR>
+arm_cache_get_sp_register (struct arm_prologue_cache *cache, arm_gdbarch_tdep *tdep, int regnum)
+{
+ if (cache->have_sec_ext)
+ {
+ if (regnum == tdep->m_profile_msp_s_regnum)
+ return cache->msp_s;
+ if (regnum == tdep->m_profile_msp_ns_regnum)
+ return cache->msp_ns;
+ if (regnum == tdep->m_profile_psp_s_regnum)
+ return cache->psp_s;
+ if (regnum == tdep->m_profile_psp_ns_regnum)
+ return cache->psp_ns;
+ if (regnum == ARM_SP_REGNUM)
+ return cache->sp;
+ }
+ else if (cache->is_m)
+ {
+ if (regnum == tdep->m_profile_msp_regnum)
+ return cache->msp_s;
+ if (regnum == tdep->m_profile_psp_regnum)
+ return cache->psp_s;
+ if (regnum == ARM_SP_REGNUM)
+ return cache->sp;
+ }
+ else
+ {
+ if (regnum == ARM_SP_REGNUM)
+ return cache->sp;
+ }
+ return {};
+}
+
+static CORE_ADDR
+arm_cache_get_prev_sp (struct arm_prologue_cache *cache, arm_gdbarch_tdep *tdep)
+{
+ gdb::optional<CORE_ADDR> val
+ = arm_cache_get_sp_register (cache, tdep, cache->active_sp_regnum);
+ if (val.has_value ())
+ return *val;
+
+ gdb_assert_not_reached ("Invalid SP selection");
+ return 0;
+}
+
+static void
+arm_cache_set_prev_sp (struct arm_prologue_cache *cache, arm_gdbarch_tdep *tdep, CORE_ADDR val)
+{
+ if (cache->have_sec_ext)
+ {
+ if (cache->active_sp_regnum == tdep->m_profile_msp_s_regnum)
+ cache->msp_s = val;
+ else if (cache->active_sp_regnum == tdep->m_profile_msp_ns_regnum)
+ cache->msp_ns = val;
+ else if (cache->active_sp_regnum == tdep->m_profile_psp_s_regnum)
+ cache->psp_s = val;
+ else if (cache->active_sp_regnum == tdep->m_profile_psp_ns_regnum)
+ cache->psp_ns = val;
+ else if (cache->active_sp_regnum == ARM_SP_REGNUM)
+ cache->sp = val;
+
+ return;
+ }
+ else if (cache->is_m)
+ {
+ if (cache->active_sp_regnum == tdep->m_profile_msp_regnum)
+ cache->msp_s = val;
+ else if (cache->active_sp_regnum == tdep->m_profile_psp_regnum)
+ cache->psp_s = val;
+ else if (cache->active_sp_regnum == ARM_SP_REGNUM)
+ cache->sp = val;
+
+ return;
+ }
+ else
+ {
+ switch (cache->active_sp_regnum)
+ {
+ case ARM_SP_REGNUM:
+ cache->sp = val;
+ return;
+ }
+ }
+
+ gdb_assert_not_reached ("Invalid SP selection");
}
namespace {
@@ -1951,14 +2091,17 @@ arm_make_prologue_cache (struct frame_info *this_frame)
if (unwound_fp == 0)
return cache;
- cache->prev_sp = unwound_fp + cache->framesize;
+ gdbarch *arch = get_frame_arch (this_frame);
+ arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (arch);
+
+ arm_cache_set_prev_sp (cache, tdep, unwound_fp + cache->framesize);
/* Calculate actual addresses of saved registers using offsets
determined by arm_scan_prologue. */
for (reg = 0; reg < gdbarch_num_regs (get_frame_arch (this_frame)); reg++)
if (cache->saved_regs[reg].is_addr ())
cache->saved_regs[reg].set_addr (cache->saved_regs[reg].addr ()
- + cache->prev_sp);
+ + arm_cache_get_prev_sp (cache, tdep));
return cache;
}
@@ -1984,7 +2127,7 @@ arm_prologue_unwind_stop_reason (struct frame_info *this_frame,
return UNWIND_OUTERMOST;
/* If we've hit a wall, stop. */
- if (cache->prev_sp == 0)
+ if (arm_cache_get_prev_sp (cache, tdep) == 0)
return UNWIND_OUTERMOST;
return UNWIND_NO_REASON;
@@ -2006,6 +2149,9 @@ arm_prologue_this_id (struct frame_info *this_frame,
*this_cache = arm_make_prologue_cache (this_frame);
cache = (struct arm_prologue_cache *) *this_cache;
+ gdbarch *arch = get_frame_arch (this_frame);
+ arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (arch);
+
/* Use function start address as part of the frame ID. If we cannot
identify the start address (due to missing symbol information),
fall back to just using the current PC. */
@@ -2014,7 +2160,7 @@ arm_prologue_this_id (struct frame_info *this_frame,
if (!func)
func = pc;
- id = frame_id_build (cache->prev_sp, func);
+ id = frame_id_build (arm_cache_get_prev_sp (cache, tdep), func);
*this_id = id;
}
@@ -2024,6 +2170,7 @@ arm_prologue_prev_register (struct frame_info *this_frame,
int prev_regnum)
{
struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (gdbarch);
struct arm_prologue_cache *cache;
if (*this_cache == NULL)
@@ -2048,7 +2195,8 @@ arm_prologue_prev_register (struct frame_info *this_frame,
identified by the next frame's stack pointer at the time of the call.
The value was already reconstructed into PREV_SP. */
if (prev_regnum == ARM_SP_REGNUM)
- return frame_unwind_got_constant (this_frame, prev_regnum, cache->prev_sp);
+ return frame_unwind_got_constant (this_frame, prev_regnum,
+ arm_cache_get_prev_sp (cache, tdep));
/* The CPSR may have been changed by the call instruction and by the
called function. The only bit we can reconstruct is the T bit,
@@ -2686,7 +2834,9 @@ arm_exidx_fill_cache (struct frame_info *this_frame, gdb_byte *entry)
= vsp - get_frame_register_unsigned (this_frame, cache->framereg);
/* We already got the previous SP. */
- cache->prev_sp = vsp;
+ struct gdbarch *gdbarch = get_frame_arch (this_frame);
+ arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (gdbarch);
+ arm_cache_set_prev_sp (cache, tdep, vsp);
return cache;
}
@@ -2809,14 +2959,16 @@ arm_make_epilogue_frame_cache (struct frame_info *this_frame)
arm_scan_prologue (this_frame, cache);
/* Since we are in epilogue, the SP has been restored. */
- cache->prev_sp = get_frame_register_unsigned (this_frame, ARM_SP_REGNUM);
+ gdbarch *arch = get_frame_arch (this_frame);
+ arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (arch);
+ arm_cache_set_prev_sp (cache, tdep, get_frame_register_unsigned (this_frame, ARM_SP_REGNUM));
/* Calculate actual addresses of saved registers using offsets
determined by arm_scan_prologue. */
for (reg = 0; reg < gdbarch_num_regs (get_frame_arch (this_frame)); reg++)
if (cache->saved_regs[reg].is_addr ())
cache->saved_regs[reg].set_addr (cache->saved_regs[reg].addr ()
- + cache->prev_sp);
+ + arm_cache_get_prev_sp (cache, tdep));
return cache;
}
@@ -2844,7 +2996,9 @@ arm_epilogue_frame_this_id (struct frame_info *this_frame,
if (func == 0)
func = pc;
- (*this_id) = frame_id_build (cache->prev_sp, pc);
+ gdbarch *arch = get_frame_arch (this_frame);
+ arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (arch);
+ (*this_id) = frame_id_build (arm_cache_get_prev_sp (cache, tdep), pc);
}
/* Implementation of function hook 'prev_register' in
@@ -2966,7 +3120,9 @@ arm_make_stub_cache (struct frame_info *this_frame)
cache = FRAME_OBSTACK_ZALLOC (struct arm_prologue_cache);
arm_cache_init (cache, this_frame);
- cache->prev_sp = get_frame_register_unsigned (this_frame, ARM_SP_REGNUM);
+ gdbarch *arch = get_frame_arch (this_frame);
+ arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (arch);
+ arm_cache_set_prev_sp (cache, tdep, get_frame_register_unsigned (this_frame, ARM_SP_REGNUM));
return cache;
}
@@ -2984,7 +3140,9 @@ arm_stub_this_id (struct frame_info *this_frame,
*this_cache = arm_make_stub_cache (this_frame);
cache = (struct arm_prologue_cache *) *this_cache;
- *this_id = frame_id_build (cache->prev_sp, get_frame_pc (this_frame));
+ gdbarch *arch = get_frame_arch (this_frame);
+ arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (arch);
+ *this_id = frame_id_build (arm_cache_get_prev_sp (cache, tdep), get_frame_pc (this_frame));
}
static int
@@ -3105,12 +3263,12 @@ arm_m_exception_cache (struct frame_info *this_frame)
cache->saved_regs[ARM_FPSCR_REGNUM].set_addr (unwound_sp + 0x60);
/* Offset 0x64 is reserved. */
- cache->prev_sp = unwound_sp + 0x68;
+ arm_cache_set_prev_sp (cache, tdep, unwound_sp + 0x68);
}
else
{
/* Standard stack frame type used. */
- cache->prev_sp = unwound_sp + 0x20;
+ arm_cache_set_prev_sp (cache, tdep, unwound_sp + 0x20);
}
/* Check EXC_RETURN bit S if Secure or Non-secure stack used. */
@@ -3132,7 +3290,7 @@ arm_m_exception_cache (struct frame_info *this_frame)
previous context's stack pointer. */
if (safe_read_memory_integer (unwound_sp + 28, 4, byte_order, &xpsr)
&& (xpsr & (1 << 9)) != 0)
- cache->prev_sp += 4;
+ arm_cache_set_prev_sp (cache, tdep, arm_cache_get_prev_sp (cache, tdep) + 4);
return cache;
}
@@ -3152,7 +3310,9 @@ arm_m_exception_this_id (struct frame_info *this_frame,
cache = (struct arm_prologue_cache *) *this_cache;
/* Our frame ID for a stub frame is the current SP and LR. */
- *this_id = frame_id_build (cache->prev_sp,
+ gdbarch *arch = get_frame_arch (this_frame);
+ arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (arch);
+ *this_id = frame_id_build (arm_cache_get_prev_sp (cache, tdep),
get_frame_pc (this_frame));
}
@@ -3171,9 +3331,11 @@ arm_m_exception_prev_register (struct frame_info *this_frame,
cache = (struct arm_prologue_cache *) *this_cache;
/* The value was already reconstructed into PREV_SP. */
+ gdbarch *arch = get_frame_arch (this_frame);
+ arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (arch);
if (prev_regnum == ARM_SP_REGNUM)
return frame_unwind_got_constant (this_frame, prev_regnum,
- cache->prev_sp);
+ arm_cache_get_prev_sp (cache, tdep));
return trad_frame_get_prev_register (this_frame, cache->saved_regs,
prev_regnum);
@@ -3218,7 +3380,9 @@ arm_normal_frame_base (struct frame_info *this_frame, void **this_cache)
*this_cache = arm_make_prologue_cache (this_frame);
cache = (struct arm_prologue_cache *) *this_cache;
- return cache->prev_sp - cache->framesize;
+ gdbarch *arch = get_frame_arch (this_frame);
+ arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (arch);
+ return arm_cache_get_prev_sp (cache, tdep) - cache->framesize;
}
struct frame_base arm_normal_base = {
@@ -9084,6 +9248,7 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
tdesc_arch_data_up tdesc_data;
int i;
bool is_m = false;
+ bool have_sec_ext = false;
int vfp_register_count = 0;
bool have_s_pseudos = false, have_q_pseudos = false;
bool have_wmmx_registers = false;
@@ -9097,6 +9262,10 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
bool have_m_profile_sp = false;
int m_profile_msp_regnum = -1;
int m_profile_psp_regnum = -1;
+ int m_profile_msp_ns_regnum = -1;
+ int m_profile_psp_ns_regnum = -1;
+ int m_profile_msp_s_regnum = -1;
+ int m_profile_psp_s_regnum = -1;
/* If we have an object to base this architecture on, try to determine
its ABI. */
@@ -9469,6 +9638,43 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
if (have_vfp)
have_q_pseudos = true;
}
+
+ /* Do we have the Security extension? */
+ feature = tdesc_find_feature (tdesc,
+ "org.gnu.gdb.arm.secext");
+ if (feature != nullptr)
+ {
+ /* Secure/Non-secure stack pointers. */
+ /* MSP_NS */
+ valid_p = tdesc_numbered_register (feature, tdesc_data.get (),
+ register_count, "msp_ns");
+ if (valid_p)
+ m_profile_msp_ns_regnum = register_count++;
+
+ /* PSP_NS */
+ valid_p = tdesc_numbered_register (feature, tdesc_data.get (),
+ register_count, "psp_ns");
+ if (valid_p)
+ m_profile_psp_ns_regnum = register_count++;
+
+ /* MSP_S */
+ valid_p = tdesc_numbered_register (feature, tdesc_data.get (),
+ register_count, "msp_s");
+ if (valid_p)
+ m_profile_msp_s_regnum = register_count++;
+
+ /* PSP_S */
+ valid_p = tdesc_numbered_register (feature, tdesc_data.get (),
+ register_count, "psp_s");
+ if (valid_p)
+ m_profile_psp_s_regnum = register_count++;
+
+ if (!valid_p)
+ return nullptr;
+
+ have_sec_ext = true;
+ }
+
}
}
@@ -9510,6 +9716,7 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
tdep->arm_abi = arm_abi;
tdep->fp_model = fp_model;
tdep->is_m = is_m;
+ tdep->have_sec_ext = have_sec_ext;
tdep->have_fpa_registers = have_fpa_registers;
tdep->have_wmmx_registers = have_wmmx_registers;
gdb_assert (vfp_register_count == 0
@@ -9532,6 +9739,10 @@ arm_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
{
tdep->m_profile_msp_regnum = m_profile_msp_regnum;
tdep->m_profile_psp_regnum = m_profile_psp_regnum;
+ tdep->m_profile_msp_ns_regnum = m_profile_msp_ns_regnum;
+ tdep->m_profile_psp_ns_regnum = m_profile_psp_ns_regnum;
+ tdep->m_profile_msp_s_regnum = m_profile_msp_s_regnum;
+ tdep->m_profile_psp_s_regnum = m_profile_psp_s_regnum;
}
arm_register_g_packet_guesses (gdbarch);
@@ -9810,6 +10021,14 @@ arm_dump_tdep (struct gdbarch *gdbarch, struct ui_file *file)
tdep->m_profile_msp_regnum);
fprintf_unfiltered (file, _("arm_dump_tdep: m_profile_psp_regnum = %i\n"),
tdep->m_profile_psp_regnum);
+ fprintf_unfiltered (file, _("arm_dump_tdep: m_profile_msp_ns_regnum = %i\n"),
+ tdep->m_profile_msp_ns_regnum);
+ fprintf_unfiltered (file, _("arm_dump_tdep: m_profile_psp_ns_regnum = %i\n"),
+ tdep->m_profile_psp_ns_regnum);
+ fprintf_unfiltered (file, _("arm_dump_tdep: m_profile_msp_s_regnum = %i\n"),
+ tdep->m_profile_msp_s_regnum);
+ fprintf_unfiltered (file, _("arm_dump_tdep: m_profile_psp_s_regnum = %i\n"),
+ tdep->m_profile_psp_s_regnum);
fprintf_unfiltered (file, _("arm_dump_tdep: Lowest pc = 0x%lx\n"),
(unsigned long) tdep->lowest_pc);
}
diff --git a/gdb/arm-tdep.h b/gdb/arm-tdep.h
index 420af43a1fe..9019955c7d4 100644
--- a/gdb/arm-tdep.h
+++ b/gdb/arm-tdep.h
@@ -119,10 +119,17 @@ struct arm_gdbarch_tdep : gdbarch_tdep
int mve_pseudo_base = 0; /* Number of the first MVE pseudo register. */
int mve_pseudo_count = 0; /* Total number of MVE pseudo registers. */
- int m_profile_msp_regnum = 0; /* M-profile MSP register number. */
- int m_profile_psp_regnum = 0; /* M-profile PSP register number. */
+ int m_profile_msp_regnum = ARM_SP_REGNUM; /* M-profile MSP register number. */
+ int m_profile_psp_regnum = ARM_SP_REGNUM; /* M-profile PSP register number. */
+
+ /* Secure and Non-secure stack pointers with security extension. */
+ int m_profile_msp_ns_regnum = ARM_SP_REGNUM; /* M-profile MSP_NS register number. */
+ int m_profile_psp_ns_regnum = ARM_SP_REGNUM; /* M-profile PSP_NS register number. */
+ int m_profile_msp_s_regnum = ARM_SP_REGNUM; /* M-profile MSP_S register number. */
+ int m_profile_psp_s_regnum = ARM_SP_REGNUM; /* M-profile PSP_S register number. */
bool is_m = false; /* Does the target follow the "M" profile. */
+ bool have_sec_ext = false; /* Do we have secure extensions? */
CORE_ADDR lowest_pc = 0; /* Lowest address at which instructions
will appear. */
diff --git a/gdb/features/arm/arm-secext.c b/gdb/features/arm/arm-secext.c
new file mode 100644
index 00000000000..39ef4afb05f
--- /dev/null
+++ b/gdb/features/arm/arm-secext.c
@@ -0,0 +1,17 @@
+/* THIS FILE IS GENERATED. -*- buffer-read-only: t -*- vi:set ro:
+ Original: arm-secext.xml */
+
+#include "gdbsupport/tdesc.h"
+
+static int
+create_feature_arm_arm_m_system (struct target_desc *result, long regnum)
+{
+ struct tdesc_feature *feature;
+
+ feature = tdesc_create_feature (result, "org.gnu.gdb.arm.secext");
+ tdesc_create_reg (feature, "msp_ns", regnum++, 1, NULL, 32, "data_ptr");
+ tdesc_create_reg (feature, "psp_ns", regnum++, 1, NULL, 32, "data_ptr");
+ tdesc_create_reg (feature, "msp_s", regnum++, 1, NULL, 32, "data_ptr");
+ tdesc_create_reg (feature, "psp_s", regnum++, 1, NULL, 32, "data_ptr");
+ return regnum;
+}
diff --git a/gdb/features/arm/arm-secext.xml b/gdb/features/arm/arm-secext.xml
new file mode 100644
index 00000000000..52b2c20a982
--- /dev/null
+++ b/gdb/features/arm/arm-secext.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2022 Free Software Foundation, Inc.
+
+ Copying and distribution of this file, with or without modification,
+ are permitted in any medium without royalty provided the copyright
+ notice and this notice are preserved. -->
+
+<!DOCTYPE feature SYSTEM "gdb-target.dtd">
+<feature name="org.gnu.gdb.arm.secext">
+ <!-- We have 4 stack pointers with the security extension. -->
+ <reg name="msp_ns" bitsize="32" type="data_ptr"/>
+ <reg name="psp_ns" bitsize="32" type="data_ptr"/>
+ <reg name="msp_s" bitsize="32" type="data_ptr"/>
+ <reg name="psp_s" bitsize="32" type="data_ptr"/>
+</feature>
--
2.25.1
next prev parent reply other threads:[~2022-01-27 13:34 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-27 13:32 [PATCH v2 1/5] gdb/arm: Fix prologue analysis to support vpush Christophe Lyon
2022-01-27 13:32 ` [PATCH v2 2/5] gdb/arm: Define MSP and PSP registers for M-Profile Christophe Lyon
2022-02-06 15:41 ` Joel Brobecker
2022-01-27 13:32 ` [PATCH v2 3/5] gdb/arm: Introduce arm_cache_init Christophe Lyon
2022-02-06 15:52 ` Joel Brobecker
2022-01-27 13:32 ` Christophe Lyon [this message]
2022-02-06 16:07 ` [PATCH v2 4/5] gdb/arm: Add support for multiple stack pointers on Cortex-M Joel Brobecker
2022-01-27 13:32 ` [PATCH v2 5/5] gdb/arm: Extend arm_m_addr_is_magic to support FNC_RETURN, add unwind-ns-to-s command Christophe Lyon
2022-02-06 16:18 ` Joel Brobecker
2022-02-06 16:41 ` Eli Zaretskii
2022-02-06 15:30 ` [PATCH v2 1/5] gdb/arm: Fix prologue analysis to support vpush Joel Brobecker
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