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Tested on x86_64-linux-gnu host for bpf-unknown-none target. gcc/ * config/bpf/bpf.h (PREFERRED_DEBUGGING_TYPE): Set to BTF_DEBUG. gcc/testsuite/ * gcc.target/bpf/bpf-debug-options-1.c: New test. * gcc.target/bpf/bpf-debug-options-2.c: Likewise. * gcc.target/bpf/bpf-debug-options-3.c: Likewise. * gcc.target/bpf/core-options-4.c: Likewise. --- gcc/config/bpf/bpf.h | 5 +++++ .../gcc.target/bpf/bpf-debug-options-1.c | 17 +++++++++++++++++ .../gcc.target/bpf/bpf-debug-options-2.c | 18 ++++++++++++++++++ .../gcc.target/bpf/bpf-debug-options-3.c | 14 ++++++++++++++ gcc/testsuite/gcc.target/bpf/core-options-4.c | 4 ++++ 5 files changed, 58 insertions(+) create mode 100644 gcc/testsuite/gcc.target/bpf/bpf-debug-options-1.c create mode 100644 gcc/testsuite/gcc.target/bpf/bpf-debug-options-2.c create mode 100644 gcc/testsuite/gcc.target/bpf/bpf-debug-options-3.c create mode 100644 gcc/testsuite/gcc.target/bpf/core-options-4.c diff --git a/gcc/config/bpf/bpf.h b/gcc/config/bpf/bpf.h index c67e17526bf..e163fbf688d 100644 --- a/gcc/config/bpf/bpf.h +++ b/gcc/config/bpf/bpf.h @@ -245,6 +245,11 @@ enum reg_class /**** Debugging Info ****/ +/* Use BTF debug info by default. */ + +#undef PREFERRED_DEBUGGING_TYPE +#define PREFERRED_DEBUGGING_TYPE BTF_DEBUG + /* In eBPF it is not possible to unwind frames. Disable CFA. */ #define DWARF2_FRAME_INFO 0 diff --git a/gcc/testsuite/gcc.target/bpf/bpf-debug-options-1.c b/gcc/testsuite/gcc.target/bpf/bpf-debug-options-1.c new file mode 100644 index 00000000000..409466c4ead --- /dev/null +++ b/gcc/testsuite/gcc.target/bpf/bpf-debug-options-1.c @@ -0,0 +1,17 @@ +/* Default to BTF debug info. */ +/* { dg-do compile } */ +/* { dg-options "-g -dA" }*/ + +struct A { + int x; + int y; +}; + +int +foo (struct A *a) +{ + return a->x; +} + +/* { dg-final { scan-assembler-not "DWARF version" } } */ +/* { dg-final { scan-assembler "btf_version" } } */ diff --git a/gcc/testsuite/gcc.target/bpf/bpf-debug-options-2.c b/gcc/testsuite/gcc.target/bpf/bpf-debug-options-2.c new file mode 100644 index 00000000000..03bde12315b --- /dev/null +++ b/gcc/testsuite/gcc.target/bpf/bpf-debug-options-2.c @@ -0,0 +1,18 @@ +/* -g defaults to BTF, which in turn implies -mco-re. */ +/* { dg-do compile } */ +/* { dg-options "-g -dA" }*/ + +struct A { + int x; + int y; +}; + +int +foo (struct A *a) +{ + return __builtin_preserve_access_index (a->x); +} + +/* { dg-final { scan-assembler-not "DWARF version" } } */ +/* { dg-final { scan-assembler "btf_version" } } */ +/* { dg-final { scan-assembler "btfext_version" } } */ diff --git a/gcc/testsuite/gcc.target/bpf/bpf-debug-options-3.c b/gcc/testsuite/gcc.target/bpf/bpf-debug-options-3.c new file mode 100644 index 00000000000..d41790e0928 --- /dev/null +++ b/gcc/testsuite/gcc.target/bpf/bpf-debug-options-3.c @@ -0,0 +1,14 @@ +/* Using -g does not incorrectly force CO-RE enabled. */ +/* { dg-do compile } */ +/* { dg-options "-g -dA -mno-co-re" }*/ + +struct A { + int x; + int y; +}; + +int +foo (struct A *a) +{ + return __builtin_preserve_access_index (a->x); /* { dg-error "BPF CO-RE is required" } */ +} diff --git a/gcc/testsuite/gcc.target/bpf/core-options-4.c b/gcc/testsuite/gcc.target/bpf/core-options-4.c new file mode 100644 index 00000000000..fde4195da42 --- /dev/null +++ b/gcc/testsuite/gcc.target/bpf/core-options-4.c @@ -0,0 +1,4 @@ +/* -g implies BTF, -gtoggle turns it off. CO-RE should not work. */ +/* { dg-do compile } */ +/* { dg-options "-g -mco-re -gtoggle" } */ +/* { dg-excess-errors "BPF CO-RE requires BTF debugging information" } */ -- 2.43.0