diff options
author | David Faust <david.faust@oracle.com> | 2024-04-24 15:01:02 -0700 |
---|---|---|
committer | David Faust <david.faust@oracle.com> | 2024-04-25 11:53:29 -0700 |
commit | 1604f7cebc49220e47d584615bcd91b1fdc1267f (patch) | |
tree | e94f19baf19347d6e9a495f20ba150cfcecd96c6 | |
parent | f541757ba4632e204169dd08a5f10c782199af42 (diff) | |
download | gcc-1604f7cebc49220e47d584615bcd91b1fdc1267f.zip gcc-1604f7cebc49220e47d584615bcd91b1fdc1267f.tar.gz gcc-1604f7cebc49220e47d584615bcd91b1fdc1267f.tar.bz2 |
bpf: set PREFERRED_DEBUGGING_TYPE to BTF_DEBUG
BTF is the standard debug info used with BPF programs, so it makes sense
to default to BTF rather than DWARF.
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.
-rw-r--r-- | gcc/config/bpf/bpf.h | 5 | ||||
-rw-r--r-- | gcc/testsuite/gcc.target/bpf/bpf-debug-options-1.c | 17 | ||||
-rw-r--r-- | gcc/testsuite/gcc.target/bpf/bpf-debug-options-2.c | 18 | ||||
-rw-r--r-- | gcc/testsuite/gcc.target/bpf/bpf-debug-options-3.c | 14 | ||||
-rw-r--r-- | gcc/testsuite/gcc.target/bpf/core-options-4.c | 4 |
5 files changed, 58 insertions, 0 deletions
diff --git a/gcc/config/bpf/bpf.h b/gcc/config/bpf/bpf.h index c67e175..e163fbf 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 0000000..409466c --- /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 0000000..03bde12 --- /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 0000000..d41790e --- /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 0000000..fde4195 --- /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" } */ |