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gdb/arm: Update the value of active sp when base sp changes

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For Arm Cortex-M33 with security extensions, there are 4 different
stacks pointers (msp_s, msp_ns, psp_s, psp_ns).
When plain "sp" is updated during unwinding of the stack, the active
stack pointer of the 4 stack pointers needs to be kept in sync.

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
2022-06-24 17:16:54 +02:00
parent 9704b8b4bc
commit 10245fe817
1 changed files with 11 additions and 5 deletions
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12
gdb/arm-tdep.c
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@ -923,6 +923,7 @@ thumb_analyze_prologue (struct gdbarch *gdbarch,
CORE_ADDR start, CORE_ADDR limit, CORE_ADDR start, CORE_ADDR limit,
struct arm_prologue_cache *cache) struct arm_prologue_cache *cache)
{ {
arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (gdbarch);
enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
enum bfd_endian byte_order_for_code = gdbarch_byte_order_for_code (gdbarch); enum bfd_endian byte_order_for_code = gdbarch_byte_order_for_code (gdbarch);
int i; int i;
@ -1398,9 +1399,6 @@ thumb_analyze_prologue (struct gdbarch *gdbarch,
unrecognized_pc = start; unrecognized_pc = start;
} }
arm_gdbarch_tdep *tdep
= (arm_gdbarch_tdep *) gdbarch_tdep (gdbarch);
/* Make sure we are dealing with a target that supports ARMv8.1-m /* Make sure we are dealing with a target that supports ARMv8.1-m
PACBTI. */ PACBTI. */
if (cache != nullptr && tdep->have_pacbti if (cache != nullptr && tdep->have_pacbti
@ -1460,7 +1458,11 @@ thumb_analyze_prologue (struct gdbarch *gdbarch,
for (i = 0; i < gdbarch_num_regs (gdbarch); i++) for (i = 0; i < gdbarch_num_regs (gdbarch); i++)
if (stack.find_reg (gdbarch, i, &offset)) if (stack.find_reg (gdbarch, i, &offset))
{
cache->saved_regs[i].set_addr (offset); cache->saved_regs[i].set_addr (offset);
if (i == ARM_SP_REGNUM)
arm_cache_set_active_sp_value(cache, tdep, offset);
}
return unrecognized_pc; return unrecognized_pc;
} }
@ -2087,7 +2089,11 @@ arm_analyze_prologue (struct gdbarch *gdbarch,
for (regno = 0; regno < ARM_FPS_REGNUM; regno++) for (regno = 0; regno < ARM_FPS_REGNUM; regno++)
if (stack.find_reg (gdbarch, regno, &offset)) if (stack.find_reg (gdbarch, regno, &offset))
{
cache->saved_regs[regno].set_addr (offset); cache->saved_regs[regno].set_addr (offset);
if (regno == ARM_SP_REGNUM)
arm_cache_set_active_sp_value(cache, tdep, offset);
}
} }
arm_debug_printf ("Prologue scan stopped at %s", arm_debug_printf ("Prologue scan stopped at %s",