#include "record-full.h"
#include <algorithm>
-#include "features/arm/arm-with-m.c"
-#include "features/arm/arm-with-m-fpa-layout.c"
-#include "features/arm/arm-with-m-vfp-d16.c"
-#include "features/arm/arm-with-iwmmxt.c"
-#include "features/arm/arm-with-vfpv2.c"
-#include "features/arm/arm-with-vfpv3.c"
-#include "features/arm/arm-with-neon.c"
-
#if GDB_SELF_TEST
#include "gdbsupport/selftest.h"
#endif
-static int arm_debug;
+static bool arm_debug;
/* Macros for setting and testing a bit in a minimal symbol that marks
it as Thumb function. The MSB of the minimal symbol's "info" field
/* Set to true if the 32-bit mode is in use. */
-int arm_apcs_32 = 1;
+bool arm_apcs_32 = true;
/* Return the bit mask in ARM_PS_REGNUM that indicates Thumb mode. */
struct obj_section *osect;
ALL_OBJFILE_OSECTIONS (objfile, osect)
- if (bfd_get_section_flags (objfile->obfd,
- osect->the_bfd_section) & SEC_ALLOC)
+ if (bfd_section_flags (osect->the_bfd_section) & SEC_ALLOC)
{
bfd_vma start, size;
- start = bfd_get_section_vma (objfile->obfd, osect->the_bfd_section);
- size = bfd_get_section_size (osect->the_bfd_section);
+ start = bfd_section_vma (osect->the_bfd_section);
+ size = bfd_section_size (osect->the_bfd_section);
if (start <= vma && vma < start + size)
return osect;
gdb::byte_vector exidx_data;
if (exidx)
{
- exidx_vma = bfd_section_vma (objfile->obfd, exidx);
- exidx_data.resize (bfd_get_section_size (exidx));
+ exidx_vma = bfd_section_vma (exidx);
+ exidx_data.resize (bfd_section_size (exidx));
if (!bfd_get_section_contents (objfile->obfd, exidx,
exidx_data.data (), 0,
gdb::byte_vector extab_data;
if (extab)
{
- extab_vma = bfd_section_vma (objfile->obfd, extab);
- extab_data.resize (bfd_get_section_size (extab));
+ extab_vma = bfd_section_vma (extab);
+ extab_data.resize (bfd_section_size (extab));
if (!bfd_get_section_contents (objfile->obfd, extab,
extab_data.data (), 0,
sec = arm_obj_section_from_vma (objfile, idx);
if (sec == NULL)
continue;
- idx -= bfd_get_section_vma (objfile->obfd, sec->the_bfd_section);
+ idx -= bfd_section_vma (sec->the_bfd_section);
/* Determine address of exception table entry. */
if (val == 1)
*pc = extract_unsigned_integer (buf, ARM_INT_REGISTER_SIZE, byte_order);
return 1;
}
+/* A call to cmse secure entry function "foo" at "a" is modified by
+ GNU ld as "b".
+ a) bl xxxx <foo>
+
+ <foo>
+ xxxx:
+
+ b) bl yyyy <__acle_se_foo>
+
+ section .gnu.sgstubs:
+ <foo>
+ yyyy: sg // secure gateway
+ b.w xxxx <__acle_se_foo> // original_branch_dest
+
+ <__acle_se_foo>
+ xxxx:
+
+ When the control at "b", the pc contains "yyyy" (sg address) which is a
+ trampoline and does not exist in source code. This function returns the
+ target pc "xxxx". For more details please refer to section 5.4
+ (Entry functions) and section 3.4.4 (C level development flow of secure code)
+ of "armv8-m-security-extensions-requirements-on-development-tools-engineering-specification"
+ document on www.developer.arm.com. */
+
+static CORE_ADDR
+arm_skip_cmse_entry (CORE_ADDR pc, const char *name, struct objfile *objfile)
+{
+ int target_len = strlen (name) + strlen ("__acle_se_") + 1;
+ char *target_name = (char *) alloca (target_len);
+ xsnprintf (target_name, target_len, "%s%s", "__acle_se_", name);
+
+ struct bound_minimal_symbol minsym
+ = lookup_minimal_symbol (target_name, NULL, objfile);
+
+ if (minsym.minsym != nullptr)
+ return BMSYMBOL_VALUE_ADDRESS (minsym);
+
+ return 0;
+}
+
+/* Return true when SEC points to ".gnu.sgstubs" section. */
+
+static bool
+arm_is_sgstubs_section (struct obj_section *sec)
+{
+ return (sec != nullptr
+ && sec->the_bfd_section != nullptr
+ && sec->the_bfd_section->name != nullptr
+ && streq (sec->the_bfd_section->name, ".gnu.sgstubs"));
+}
/* Recognize GCC and GNU ld's trampolines. If we are in a trampoline,
return the target PC. Otherwise return 0. */
return 0;
}
+ struct obj_section *section = find_pc_section (pc);
+
+ /* Check whether SECTION points to the ".gnu.sgstubs" section. */
+ if (arm_is_sgstubs_section (section))
+ return arm_skip_cmse_entry (pc, name, section->objfile);
+
return 0; /* not a stub */
}
data = arm_objfile_data_key.emplace (objfile,
objfile->obfd->section_count);
arm_mapping_symbol_vec &map
- = data->section_maps[bfd_get_section (sym)->index];
+ = data->section_maps[bfd_asymbol_section (sym)->index];
new_map_sym.value = sym->value;
new_map_sym.type = name[1];
bfd_target_elf_flavour,
arm_elf_osabi_sniffer);
- /* Initialize the standard target descriptions. */
- initialize_tdesc_arm_with_m ();
- initialize_tdesc_arm_with_m_fpa_layout ();
- initialize_tdesc_arm_with_m_vfp_d16 ();
- initialize_tdesc_arm_with_iwmmxt ();
- initialize_tdesc_arm_with_vfpv2 ();
- initialize_tdesc_arm_with_vfpv3 ();
- initialize_tdesc_arm_with_neon ();
-
/* Add root prefix command for all "set arm"/"show arm" commands. */
add_prefix_cmd ("arm", no_class, set_arm_command,
_("Various ARM-specific commands."),
projects / deliverable / binutils-gdb.git / blobdiff