0001-binutils-crosssdk-Generate-relocatable-SDKs.patch 2.7 KB

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  1. From a0ac147aec127c66c9e38292faa50bb56d3c2a19 Mon Sep 17 00:00:00 2001
  2. From: Khem Raj <raj.khem@gmail.com>
  3. Date: Mon, 2 Mar 2015 01:58:54 +0000
  4. Subject: [PATCH] binutils-crosssdk: Generate relocatable SDKs
  5. This patch will modify the ELF linker scripts so that the crosssdk
  6. linker will generate binaries with a 4096 bytes PT_INTERP section. When the binaries
  7. will be relocated, at SDK install time, the interpreter path can be easily
  8. changed by the relocating script.
  9. generate larger .interp section for gold linker as well
  10. Upstream-Status: Inappropriate [SDK specific]
  11. Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com>
  12. Signed-off-by: Khem Raj <raj.khem@gmail.com>
  13. ---
  14. gold/layout.cc | 2 +-
  15. ld/genscripts.sh | 3 +++
  16. ld/scripttempl/elf.sc | 4 ++--
  17. 3 files changed, 6 insertions(+), 3 deletions(-)
  18. diff --git a/gold/layout.cc b/gold/layout.cc
  19. index 3efe8d98ae9..9cc389664a6 100644
  20. --- a/gold/layout.cc
  21. +++ b/gold/layout.cc
  22. @@ -5033,7 +5033,7 @@ Layout::create_interp(const Target* target)
  23. gold_assert(interp != NULL);
  24. }
  25. - size_t len = strlen(interp) + 1;
  26. + size_t len = 4096;
  27. Output_section_data* odata = new Output_data_const(interp, len, 1);
  28. diff --git a/ld/genscripts.sh b/ld/genscripts.sh
  29. index 278f212bdad..0c52ebee4d0 100755
  30. --- a/ld/genscripts.sh
  31. +++ b/ld/genscripts.sh
  32. @@ -304,6 +304,7 @@ DATA_ALIGNMENT_u="${DATA_ALIGNMENT_u-${DATA_ALIGNMENT_r}}"
  33. LD_FLAG=r
  34. DATA_ALIGNMENT=${DATA_ALIGNMENT_r}
  35. DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
  36. +PARTIAL_LINKING=" "
  37. ( echo "/* Script for -r */"
  38. source_sh ${CUSTOMIZER_SCRIPT}
  39. source_sh ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
  40. @@ -312,10 +313,12 @@ DEFAULT_DATA_ALIGNMENT="ALIGN(${SEGMENT_SIZE})"
  41. LD_FLAG=u
  42. DATA_ALIGNMENT=${DATA_ALIGNMENT_u}
  43. CONSTRUCTING=" "
  44. +PARTIAL_LINKING=" "
  45. ( echo "/* Script for -Ur */"
  46. source_sh ${CUSTOMIZER_SCRIPT}
  47. source_sh ${srcdir}/scripttempl/${SCRIPT_NAME}.sc
  48. ) | sed -e '/^ *$/d;s/[ ]*$//' > ldscripts/${EMULATION_NAME}.xu
  49. +unset PARTIAL_LINKING
  50. DATA_ALIGNMENT=${DATA_ALIGNMENT_}
  51. RELOCATING=" "
  52. diff --git a/ld/scripttempl/elf.sc b/ld/scripttempl/elf.sc
  53. index bf2268bb0ad..b1811ef130f 100644
  54. --- a/ld/scripttempl/elf.sc
  55. +++ b/ld/scripttempl/elf.sc
  56. @@ -148,8 +148,8 @@ if test -z "$DATA_SEGMENT_ALIGN"; then
  57. DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (${SEPARATE_GOTPLT-0}, .);"
  58. fi
  59. fi
  60. -if test -z "${INITIAL_READONLY_SECTIONS}${CREATE_SHLIB}"; then
  61. - INITIAL_READONLY_SECTIONS=".interp ${RELOCATING-0} : { *(.interp) }"
  62. +if test -z "${INITIAL_READONLY_SECTIONS}${CREATE_SHLIB}${PARTIAL_LINKING}"; then
  63. + INITIAL_READONLY_SECTIONS=".interp ${RELOCATING-0} : { *(.interp); . = 0x1000; }"
  64. fi
  65. if test -z "$PLT"; then
  66. IPLT=".iplt ${RELOCATING-0} : { *(.iplt) }"