mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-15 04:31:49 +08:00
493ffac5aa
My original implementation for LDI32 pseudo does not conform to the TI ABI. I wrongly documented my TI PRU ELF object files inspection, which got propagated into my binutils implementation. Issue was exposed when running the GCC ABI testsuite against TI toolchain. According to TI ABI, LDI32 must use first LDI instruction to load the MSB 16bits, and second LDI instruction for the LSB 16bits. This patch will break binary compatibility with previously released binutils versions for PRU. Still, I think it is better to fix binutils to conform to the chip vendor ABI. bfd * elf32-pru.c (pru_elf32_do_ldi32_relocate): Make LDI32 relocation conformant to TI ABI. (pru_elf32_relax_section): Likewise. (pru_elf_relax_delete_bytes): Fix offsets for new LDI32 code. * elf32-pru.c (pru_elf32_do_ldi32_relocate): Ignore addend. (pru_elf32_pmem_relocate): Trap - should not get here. (pru_elf32_relocate_section): Add support for REL relocations. (elf_info_to_howto_rel): Enable REL. (elf_backend_may_use_rel_p): Likewise. (elf_backend_may_use_rela_p): Likewise. (elf_backend_default_use_rela_p): Likewise. gas * config/tc-pru.c (md_apply_fix): Make LDI32 relocation conformant to TI ABI. (pru_assemble_arg_i): Likewise. (output_insn_ldi32): Likewise. * testsuite/gas/pru/ldi.d: Update test for the now fixed LDI32. * gas/config/tc-pru.c (pru_assemble_arg_b): Check imm8 operand range. * gas/testsuite/gas/pru/illegal2.l: New test. * gas/testsuite/gas/pru/illegal2.s: New test. * gas/testsuite/gas/pru/pru.exp: Register new illegal2 test. ld * scripttempl/pru.sc: Add LD sections to allow linking TI toolchain object files. * scripttempl/pru.sc: Switch to init_array. * testsuite/ld-pru/ldi32.d: Update LDI32 test to conform to TI ABI. * testsuite/ld-pru/norelax_ldi32-data.d: Likewise. * testsuite/ld-pru/norelax_ldi32-dis.d: Likewise. * testsuite/ld-pru/relax_ldi32-data.d: Likewise. * testsuite/ld-pru/relax_ldi32-dis.d: Likewise.
191 lines
5.9 KiB
Python
191 lines
5.9 KiB
Python
cat <<EOF
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OUTPUT_FORMAT("${OUTPUT_FORMAT}","${OUTPUT_FORMAT}","${OUTPUT_FORMAT}")
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OUTPUT_ARCH(${ARCH})
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MEMORY
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{
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imem (x) : ORIGIN = $TEXT_ORIGIN, LENGTH = $TEXT_LENGTH
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dmem (rw!x) : ORIGIN = $DATA_ORIGIN, LENGTH = $DATA_LENGTH
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}
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__HEAP_SIZE = DEFINED(__HEAP_SIZE) ? __HEAP_SIZE : 32;
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__STACK_SIZE = DEFINED(__STACK_SIZE) ? __STACK_SIZE : 512;
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${RELOCATING+ PROVIDE (_stack_top = ORIGIN(dmem) + LENGTH(dmem)) ; }
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${RELOCATING+ENTRY (_start)}
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SECTIONS
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{
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/* Read-only sections, merged into text segment: */
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${TEXT_DYNAMIC+${DYNAMIC}}
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.hash ${RELOCATING-0} : { *(.hash) }
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.dynsym ${RELOCATING-0} : { *(.dynsym) }
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.dynstr ${RELOCATING-0} : { *(.dynstr) }
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.gnu.version ${RELOCATING-0} : { *(.gnu.version) }
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.gnu.version_d ${RELOCATING-0} : { *(.gnu.version_d) }
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.gnu.version_r ${RELOCATING-0} : { *(.gnu.version_r) }
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.rel.init ${RELOCATING-0} : { *(.rel.init) }
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.rela.init ${RELOCATING-0} : { *(.rela.init) }
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.rel.text ${RELOCATING-0} :
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{
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*(.rel.text)
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${RELOCATING+*(.rel.text.*)}
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${RELOCATING+*(.rel.text:*)}
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${RELOCATING+*(.rel.gnu.linkonce.t*)}
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}
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.rela.text ${RELOCATING-0} :
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{
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*(.rela.text)
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${RELOCATING+*(.rela.text.*)}
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${RELOCATING+*(.rela.text:*)}
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${RELOCATING+*(.rela.gnu.linkonce.t*)}
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}
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.rel.fini ${RELOCATING-0} : { *(.rel.fini) }
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.rela.fini ${RELOCATING-0} : { *(.rela.fini) }
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.rel.rodata ${RELOCATING-0} :
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{
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*(.rel.rodata)
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${RELOCATING+*(.rel.rodata.*)}
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${RELOCATING+*(.rel.rodata:*)}
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${RELOCATING+*(.rel.gnu.linkonce.r*)}
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}
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.rela.rodata ${RELOCATING-0} :
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{
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*(.rela.rodata)
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${RELOCATING+*(.rela.rodata.*)}
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${RELOCATING+*(.rela.rodata:*)}
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${RELOCATING+*(.rela.gnu.linkonce.r*)}
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}
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.rel.data ${RELOCATING-0} :
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{
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*(.rel.data)
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${RELOCATING+*(.rel.data.*)}
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${RELOCATING+*(.rel.data:*)}
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${RELOCATING+*(.rel.gnu.linkonce.d*)}
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}
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.rela.data ${RELOCATING-0} :
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{
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*(.rela.data)
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${RELOCATING+*(.rela.data.*)}
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${RELOCATING+*(.rela.data:*)}
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${RELOCATING+*(.rela.gnu.linkonce.d*)}
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}
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.rel.init_array ${RELOCATING-0} : { *(.rel.init_array) }
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.rela.init_array ${RELOCATING-0} : { *(.rela.init_array) }
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.rel.fini_array ${RELOCATING-0} : { *(.rel.fini_array) }
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.rela.fini_array ${RELOCATING-0} : { *(.rela.fini_array) }
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.rel.got ${RELOCATING-0} : { *(.rel.got) }
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.rela.got ${RELOCATING-0} : { *(.rela.got) }
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.rel.bss ${RELOCATING-0} : { *(.rel.bss) }
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.rela.bss ${RELOCATING-0} : { *(.rela.bss) }
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.rel.plt ${RELOCATING-0} : { *(.rel.plt) }
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.rela.plt ${RELOCATING-0} : { *(.rela.plt) }
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/* Internal text space. */
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.text ${RELOCATING-0} :
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{
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${RELOCATING+ _text_start = . ; }
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${RELOCATING+. = ALIGN(4);}
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${RELOCATING+*(.init0) /* Start here after reset. */}
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${RELOCATING+KEEP (*(.init0))}
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${RELOCATING+. = ALIGN(4);}
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*(.text)
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${RELOCATING+. = ALIGN(4);}
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${RELOCATING+*(.text.*)}
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${RELOCATING+. = ALIGN(4);}
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${RELOCATING+*(.text:*)}
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${RELOCATING+. = ALIGN(4);}
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${RELOCATING+*(.gnu.linkonce.t*)}
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${RELOCATING+. = ALIGN(4);}
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${RELOCATING+ _text_end = . ; }
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} ${RELOCATING+ > imem}
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.data ${RELOCATING-0} :
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{
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/* Optional variable that user is prepared to have NULL address. */
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${RELOCATING+ *(.data.atzero*)}
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/* CRT is prepared for constructor/destructor table to have
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a "valid" NULL address. */
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${CONSTRUCTING+ __init_array_begin = . ; }
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${CONSTRUCTING+ KEEP (*(SORT_BY_INIT_PRIORITY(.init_array.*)))}
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${CONSTRUCTING+ KEEP (*(.init_array))}
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${CONSTRUCTING+ __init_array_end = . ; }
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${CONSTRUCTING+ __fini_array_begin = . ; }
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${CONSTRUCTING+ KEEP (*(SORT_BY_INIT_PRIORITY(.fini_array.*)))}
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${CONSTRUCTING+ KEEP (*(.fini_array))}
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${CONSTRUCTING+ __fini_array_end = . ; }
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/* DATA memory starts at address 0. So to avoid placing a valid static
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variable at the invalid NULL address, we introduce the .data.atzero
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section. If CRT can make some use of it - great. Otherwise skip a
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word. In all cases .data/.bss sections must start at non-zero. */
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. += (. == 0 ? 4 : 0);
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${RELOCATING+ PROVIDE (_data_start = .) ; }
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*(.data)
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${RELOCATING+ *(.data*)}
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${RELOCATING+ *(.data:*)}
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${RELOCATING+ *(.rodata) /* We need to include .rodata here if gcc is used. */}
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${RELOCATING+ *(.rodata.*) /* with -fdata-sections. */}
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${RELOCATING+ *(.rodata:*)}
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${RELOCATING+*(.gnu.linkonce.d*)}
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${RELOCATING+*(.gnu.linkonce.r*)}
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${RELOCATING+. = ALIGN(4);}
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${RELOCATING+ PROVIDE (_data_end = .) ; }
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} ${RELOCATING+ > dmem }
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.resource_table ${RELOCATING-0} :
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{
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*(.resource_table)
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KEEP (*(.resource_table))
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} > dmem
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.bss ${RELOCATING-0} :
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{
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${RELOCATING+ PROVIDE (_bss_start = .) ; }
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*(.bss)
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${RELOCATING+ *(.bss.*)}
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${RELOCATING+ *(.bss:*)}
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${RELOCATING+*(.gnu.linkonce.b*)}
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*(COMMON)
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${RELOCATING+ PROVIDE (_bss_end = .) ; }
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} ${RELOCATING+ > dmem}
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/* Global data not cleared after reset. */
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.noinit ${RELOCATING-0}:
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{
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${RELOCATING+ PROVIDE (_noinit_start = .) ; }
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*(.noinit)
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${RELOCATING+ PROVIDE (_noinit_end = .) ; }
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${RELOCATING+ PROVIDE (_heap_start = .) ; }
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${RELOCATING+ . += __HEAP_SIZE ; }
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/* Stack is not here really. It will be put at the end of DMEM.
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But we take into account its size here, in order to allow
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for MEMORY overflow checking during link time. */
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${RELOCATING+ . += __STACK_SIZE ; }
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} ${RELOCATING+ > dmem}
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/* Stabs debugging sections. */
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.stab 0 : { *(.stab) }
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.stabstr 0 : { *(.stabstr) }
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.stab.excl 0 : { *(.stab.excl) }
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.stab.exclstr 0 : { *(.stab.exclstr) }
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.stab.index 0 : { *(.stab.index) }
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.stab.indexstr 0 : { *(.stab.indexstr) }
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.comment 0 : { *(.comment) }
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.note.gnu.build-id : { *(.note.gnu.build-id) }
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EOF
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. $srcdir/scripttempl/DWARF.sc
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cat <<EOF
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}
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EOF
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