[v4,05/17] riscv: Introduce feature variables for holding RISC-V GNU properties
Checks
| Context |
Check |
Description |
| redhat-pt-bot/TryBot-apply_patch |
success
|
Patch applied to master at the time it was sent
|
| linaro-tcwg-bot/tcwg_glibc_build--master-arm |
success
|
Build passed
|
| linaro-tcwg-bot/tcwg_glibc_build--master-aarch64 |
success
|
Build passed
|
| linaro-tcwg-bot/tcwg_glibc_check--master-aarch64 |
success
|
Test passed
|
| linaro-tcwg-bot/tcwg_glibc_check--master-arm |
fail
|
Patch failed to apply
|
Commit Message
Member l_riscv_feature_1_and is added to struct link_map, which stores
the feature_1_and property information for each object.
New global _dl_riscv_feature_1 will be used to store what features are
finally enabled for this process.
---
sysdeps/riscv/dl-procruntime.c | 60 ++++++++++++++++++++++++++++++++++
sysdeps/riscv/link_map.h | 22 +++++++++++++
2 files changed, 82 insertions(+)
create mode 100644 sysdeps/riscv/dl-procruntime.c
create mode 100644 sysdeps/riscv/link_map.h
Comments
Reviewed-by: Deepak Gupta <debug@rivosinc.com>
On Mon, May 25, 2026 at 11:18 PM Jesse Huang <jesse.huang@sifive.com> wrote:
>
> Member l_riscv_feature_1_and is added to struct link_map, which stores
> the feature_1_and property information for each object.
>
> New global _dl_riscv_feature_1 will be used to store what features are
> finally enabled for this process.
> ---
> sysdeps/riscv/dl-procruntime.c | 60 ++++++++++++++++++++++++++++++++++
> sysdeps/riscv/link_map.h | 22 +++++++++++++
> 2 files changed, 82 insertions(+)
> create mode 100644 sysdeps/riscv/dl-procruntime.c
> create mode 100644 sysdeps/riscv/link_map.h
>
> diff --git a/sysdeps/riscv/dl-procruntime.c b/sysdeps/riscv/dl-procruntime.c
> new file mode 100644
> index 0000000000..06a582920e
> --- /dev/null
> +++ b/sysdeps/riscv/dl-procruntime.c
> @@ -0,0 +1,60 @@
> +/* Data for processor runtime information. RISC-V version.
> + Copyright (C) 2026 Free Software Foundation, Inc.
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +/* This information must be kept in sync with the _DL_HWCAP_COUNT,
> + HWCAP_PLATFORMS_START and HWCAP_PLATFORMS_COUNT definitions in
> + dl-hwcap.h.
> +
> + If anything should be added here check whether the size of each string
> + is still ok with the given array size.
> +
> + All the #ifdefs in the definitions are quite irritating but
> + necessary if we want to avoid duplicating the information. There
> + are three different modes:
> +
> + - PROCINFO_DECL is defined. This means we are only interested in
> + declarations.
> +
> + - PROCINFO_DECL is not defined:
> +
> + + if SHARED is defined the file is included in an array
> + initializer. The .element = { ... } syntax is needed.
> +
> + + if SHARED is not defined a normal array initialization is
> + needed.
> + */
> +
> +#ifndef PROCINFO_CLASS
> +# define PROCINFO_CLASS
> +#endif
> +
> +#if !IS_IN (ldconfig)
> +# if !defined PROCINFO_DECL && defined SHARED
> + ._dl_riscv_feature_1
> +# else
> +PROCINFO_CLASS unsigned int _dl_riscv_feature_1
> +# endif
> +# ifndef PROCINFO_DECL
> += 0
> +# endif
> +# if !defined SHARED || defined PROCINFO_DECL
> +;
> +# else
> +,
> +# endif
> +#endif
> diff --git a/sysdeps/riscv/link_map.h b/sysdeps/riscv/link_map.h
> new file mode 100644
> index 0000000000..4a6428bb24
> --- /dev/null
> +++ b/sysdeps/riscv/link_map.h
> @@ -0,0 +1,22 @@
> +/* Additional fields in struct link_map. Linux/RISC-V version.
> + Copyright (C) 2026 Free Software Foundation, Inc.
> + This file is part of the GNU C Library.
> +
> + The GNU C Library is free software; you can redistribute it and/or
> + modify it under the terms of the GNU Lesser General Public
> + License as published by the Free Software Foundation; either
> + version 2.1 of the License, or (at your option) any later version.
> +
> + The GNU C Library is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + Lesser General Public License for more details.
> +
> + You should have received a copy of the GNU Lesser General Public
> + License along with the GNU C Library; if not, see
> + <https://www.gnu.org/licenses/>. */
> +
> +/* GNU_PROPERTY_RISCV_FEATURE_1_AND of this object. */
> +unsigned int l_riscv_feature_1_and;
> +
> +#include <sysdeps/generic/link_map.h>
> --
> 2.43.7
>
new file mode 100644
@@ -0,0 +1,60 @@
+/* Data for processor runtime information. RISC-V version.
+ Copyright (C) 2026 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* This information must be kept in sync with the _DL_HWCAP_COUNT,
+ HWCAP_PLATFORMS_START and HWCAP_PLATFORMS_COUNT definitions in
+ dl-hwcap.h.
+
+ If anything should be added here check whether the size of each string
+ is still ok with the given array size.
+
+ All the #ifdefs in the definitions are quite irritating but
+ necessary if we want to avoid duplicating the information. There
+ are three different modes:
+
+ - PROCINFO_DECL is defined. This means we are only interested in
+ declarations.
+
+ - PROCINFO_DECL is not defined:
+
+ + if SHARED is defined the file is included in an array
+ initializer. The .element = { ... } syntax is needed.
+
+ + if SHARED is not defined a normal array initialization is
+ needed.
+ */
+
+#ifndef PROCINFO_CLASS
+# define PROCINFO_CLASS
+#endif
+
+#if !IS_IN (ldconfig)
+# if !defined PROCINFO_DECL && defined SHARED
+ ._dl_riscv_feature_1
+# else
+PROCINFO_CLASS unsigned int _dl_riscv_feature_1
+# endif
+# ifndef PROCINFO_DECL
+= 0
+# endif
+# if !defined SHARED || defined PROCINFO_DECL
+;
+# else
+,
+# endif
+#endif
new file mode 100644
@@ -0,0 +1,22 @@
+/* Additional fields in struct link_map. Linux/RISC-V version.
+ Copyright (C) 2026 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+/* GNU_PROPERTY_RISCV_FEATURE_1_AND of this object. */
+unsigned int l_riscv_feature_1_and;
+
+#include <sysdeps/generic/link_map.h>