pahole: Prep 1.21
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Arnaldo Carvalho de Melo
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commit
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@ -33,9 +33,9 @@ set(CMAKE_C_FLAGS_DEBUG "-Wall -Werror -ggdb -O0")
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set(CMAKE_C_FLAGS_RELEASE "-Wall -O2")
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# Just for grepping, DWARVES_VERSION isn't used anywhere anymore
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# add_definitions(-D_GNU_SOURCE -DDWARVES_VERSION="v1.20")
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# add_definitions(-D_GNU_SOURCE -DDWARVES_VERSION="v1.21")
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add_definitions(-D_GNU_SOURCE -DDWARVES_MAJOR_VERSION=1)
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add_definitions(-D_GNU_SOURCE -DDWARVES_MINOR_VERSION=20)
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add_definitions(-D_GNU_SOURCE -DDWARVES_MINOR_VERSION=21)
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find_package(DWARF REQUIRED)
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find_package(ZLIB REQUIRED)
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1
MANIFEST
1
MANIFEST
@ -51,6 +51,7 @@ changes-v1.17
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changes-v1.18
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changes-v1.19
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changes-v1.20
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changes-v1.21
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COPYING
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NEWS
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README
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20
NEWS
20
NEWS
@ -1,3 +1,23 @@
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v1.21:
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Fri Apr 9 2021
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ae0b7dde1fd50b12 dwarf_loader: Handle DWARF5 DW_OP_addrx properly
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9adb014930f31c66 dwarf_loader: Handle subprogram ret type with abstract_origin properly
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5752d1951d081a80 dwarf_loader: Check .notes section for LTO build info
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209e45424ff4a22d dwarf_loader: Check .debug_abbrev for cross-CU references
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39227909db3cc2c2 dwarf_loader: Permit merging all DWARF CU's for clang LTO built binary
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763475ca1101ccfe dwarf_loader: Factor out common code to initialize a cu
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d0d3fbd4744953e8 dwarf_loader: Permit a flexible HASHTAGS__BITS
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ffe0ef4d73906c18 btf: Add --btf_gen_all flag
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de708b33114d42c2 btf: Add support for the floating-point types
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4b7f8c04d009942b fprintf: Honour conf_fprintf.hex when printing enumerations
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f2889ff163726336 Avoid warning when building with NDEBUG
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8e1f8c904e303d5d btf_encoder: Match ftrace addresses within ELF functions
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9fecc77ed82d429f dwarf_loader: Use a better hashing function, from libbpf
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0125de3a4c055cdf btf_encoder: Funnel ELF error reporting through a macro
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7d8e829f636f47ab btf_encoder: Sanitize non-regular int base type
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v1.20:
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Tue Feb 2 2021
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70
changes-v1.21
Normal file
70
changes-v1.21
Normal file
@ -0,0 +1,70 @@
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DWARF loader:
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- Handle DWARF5 DW_OP_addrx properly
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Part of the effort to support the subset of DWARF5 that is generated when building the kernel.
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- Handle subprogram ret type with abstract_origin properly
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Adds a second pass to resolve abstract origin DWARF description of functions to aid
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the BTF encoder in getting the right return type.
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- Check .notes section for LTO build info
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When LTO is used, currently only with clang, we need to do extra steps to handle references
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from one object (compile unit, aka CU) to another, a way for DWARF to avoid duplicating
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information.
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- Check .debug_abbrev for cross-CU references
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When the kernel build process doesn't add an ELF note in vmlinux indicating that LTO was
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used and thus intra-CU references are present and thus we need to use a more expensive
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way to resolve types and (again) thus to encode BTF, we need to look at DWARF's .debug_abbrev
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ELF section to figure out if such intra-CU references are present.
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- Permit merging all DWARF CU's for clang LTO built binary
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Allow not trowing away previously supposedly self contained compile units
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(objects, aka CU, aka Compile Units) as they have type descriptions that will
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be used in later CUs.
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- Permit a flexible HASHTAGS__BITS
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So that we can use a more expensive algorithm when we need to keep previously processed
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compile units that will then be referenced by later ones to resolve types.
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- Use a better hashing function, from libbpf
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Enabling patch to combine compile units when using LTO.
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BTF encoder:
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- Add --btf_gen_all flag
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A new command line to allow asking for the generation of all BTF encodings, so that we
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can stop adding new command line options to enable new encodings in the kernel Makefile.
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- Match ftrace addresses within ELF functions
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To cope with differences in how DWARF and ftrace describes function boundaries.
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- Funnel ELF error reporting through a macro
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To use libelf's elf_error() function, improving error messages.
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- Sanitize non-regular int base type
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Cope with clang with dwarf5 non-regular int base types, tricky stuff, see yhs
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full explanation in the relevant cset.
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- Add support for the floating-point types
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S/390 has floats'n'doubles in its arch specific linux headers, cope with that.
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Pretty printer:
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- Honour conf_fprintf.hex when printing enumerations
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If the user specifies --hex in the command line, honour it when printing enumerations.
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Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -2,7 +2,7 @@
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%define libver 1
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Name: dwarves
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Version: 1.20
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Version: 1.21
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Release: 1%{?dist}
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License: GPLv2
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Summary: Debugging Information Manipulation Tools (pahole & friends)
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@ -79,7 +79,7 @@ rm -Rf %{buildroot}
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%files
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%doc README.ctracer
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%doc README.btf
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%doc changes-v1.20
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%doc changes-v1.21
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%doc NEWS
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%{_bindir}/btfdiff
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%{_bindir}/codiff
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@ -134,7 +134,27 @@ rm -Rf %{buildroot}
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%{_libdir}/%{libname}_reorganize.so
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%changelog
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* Tue Feb 2 2021 Arnaldo Carvalho de Melo <acme@redhat.com> - 1.20-1
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* Fri Apr 9 2021 Arnaldo Carvalho de Melo <acme@redhat.com> - 1.21-1
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- New release: v1.21
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- DWARF loader:
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- Handle DWARF5 DW_OP_addrx properly
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- Handle subprogram ret type with abstract_origin properly
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- Check .notes section for LTO build info
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- Check .debug_abbrev for cross-CU references
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- Permit merging all DWARF CU's for clang LTO built binary
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- Factor out common code to initialize a cu
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- Permit a flexible HASHTAGS__BITS
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- Use a better hashing function, from libbpf
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- btf_encoder:
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- Add --btf_gen_all flag
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- Match ftrace addresses within ELF functions
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- Funnel ELF error reporting through a macro
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- Sanitize non-regular int base type
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- Add support for the floating-point types
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- Pretty printer:
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- Honour conf_fprintf.hex when printing enumerations
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* Tue Feb 2 2021 Arnaldo Carvalho de Melo <acme@redhat.com> - 1.20-1
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- New release: v1.20
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- btf_encoder:
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- Improve ELF error reporting using elf_errmsg(elf_errno())
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