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4ba2ef8fbe
bfd/ * elf32-arm.c (CMSE_PREFIX): Define macro. (elf32_arm_stub_cmse_branch_thumb_only): Define stub sequence. (cmse_branch_thumb_only): Declare stub. (struct elf32_arm_link_hash_table): Define cmse_stub_sec field. (elf32_arm_get_plt_info): Add globals parameter. Use it to return FALSE if there is no PLT. (arm_type_of_stub): Adapt to new elf32_arm_get_plt_info signature. (elf32_arm_final_link_relocate): Likewise. (elf32_arm_gc_sweep_hook): Likewise. (elf32_arm_gc_mark_extra_sections): Mark sections holding ARMv8-M secure entry functions. (arm_stub_is_thumb): Add case for arm_stub_cmse_branch_thumb_only. (arm_dedicated_stub_output_section_required): Change to a switch case and add a case for arm_stub_cmse_branch_thumb_only. (arm_dedicated_stub_output_section_required_alignment): Likewise. (arm_stub_dedicated_output_section_name): Likewise. (arm_stub_dedicated_input_section_ptr): Likewise and remove ATTRIBUTE_UNUSED for htab parameter. (arm_stub_required_alignment): Likewise. (arm_stub_sym_claimed): Likewise. (arm_dedicated_stub_section_padding): Likewise. (cmse_scan): New function. (elf32_arm_size_stubs): Call cmse_scan for ARM M profile targets. Set stub_changed to TRUE if such veneers were created. (elf32_arm_swap_symbol_in): Add detection code for CMSE special symbols. include/ * arm.h (ARM_GET_SYM_CMSE_SPCL): Define macro. (ARM_SET_SYM_CMSE_SPCL): Likewise. ld/ * ld.texinfo (Placement of SG veneers): New concept entry. * testsuite/ld-arm/arm-elf.exp (Secure gateway veneers: no .gnu.sgstubs section): New test. (Secure gateway veneers: wrong entry functions): Likewise. (Secure gateway veneers (ARMv8-M Baseline)): Likewise. (Secure gateway veneers (ARMv8-M Mainline)): Likewise. * testsuite/ld-arm/cmse-veneers.s: New file. * testsuite/ld-arm/cmse-veneers.d: Likewise. * testsuite/ld-arm/cmse-veneers.rd: Likewise. * testsuite/ld-arm/cmse-veneers.sd: Likewise. * testsuite/ld-arm/cmse-veneers-no-gnu_sgstubs.out: Likewise. * testsuite/ld-arm/cmse-veneers-wrong-entryfct.out: Likewise.
98 lines
2.2 KiB
ArmAsm
98 lines
2.2 KiB
ArmAsm
.syntax unified
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.thumb
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.file "foo.c"
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.text
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.macro decltype name, type
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.ifc \type,object
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.data
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.else
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.thumb
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.thumb_func
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.endif
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.type \name, %\type
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.endm
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.macro entry name, type, vis, typespc, visspc, entry_fct
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.align 2
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.ifb \visspc
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.\vis __acle_se_\name
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.else
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.\visspc __acle_se_\name
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.endif
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.\vis \name
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.thumb
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.thumb_func
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.ifb \typespc
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decltype __acle_se_\name, \type
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.else
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decltype __acle_se_\name, \typespc
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.endif
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decltype \name, \type
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__acle_se_\name:
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\entry_fct
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\name:
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.ifc \type,object
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.word 42
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.else
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nop
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.endif
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.size \name, .-\name
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.size __acle_se_\name, .-__acle_se_\name
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.endm
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.ifndef CHECK_ERRORS
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@ Valid setups for veneer generation
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entry glob_entry_veneer1, function, global
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entry weak_entry_veneer1, function, weak
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entry glob_entry_veneer2, function, global, visspc=weak
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entry weak_entry_veneer2, function, weak, visspc=global
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@ Valid setup for entry function without SG veneer
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entry glob_entry_fct, function, global, entry_fct=nop
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.else
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@ Invalid setups for veneer generation (visibility)
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entry loc_entry_veneer1, function, local
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entry loc_entry_veneer2, function, global, visspc=local
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entry loc_entry_veneer3, function, local, visspc=global
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entry loc_entry_veneer4, function, weak, visspc=local
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entry loc_entry_veneer5, function, local, visspc=weak
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@ Invalid setups for veneer generation (absent standard symbol)
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.align 2
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.global __acle_se_fake_entry_veneer1
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.thumb
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.thumb_func
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.type __acle_se_fake_entry_veneer1, %function
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__acle_se_fake_entry_veneer1:
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nop
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.size __acle_se_fake_entry_veneer1, .-__acle_se_fake_entry_veneer1
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@ Invalid setups for veneer generation (type)
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entry obj_entry_veneer1, object, global, typespc=function
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entry obj_entry_veneer2, function, global, typespc=object
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@ Invalid setup for veneer generation (sections)
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.section .text.sub1
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.align 2
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.thumb
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.thumb_func
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.global __acle_se_fake_entry_veneer2
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.type __acle_se_fake_entry_veneer2, %function
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__acle_se_fake_entry_veneer2:
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nop
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.size __acle_se_fake_entry_veneer2, .-__acle_se_fake_entry_veneer2
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.section .text.sub2
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.align 2
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.thumb
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.thumb_func
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.global fake_entry_veneer2
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.type fake_entry_veneer2, %function
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fake_entry_veneer2:
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nop
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.size fake_entry_veneer2, .-fake_entry_veneer2
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.endif
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