Deprecate PT_RISCV_ATTRIBUTES

Author: MaskRay

riscv-elf.adoc

@@ -1092,6 +1092,26 @@ The defined processor-specific section types are listed in <<rv-section-type>>.
 +++.riscv.jvt+++ is a linker-created section to store table jump
 target addresses. The minimum alignment of this section is 64 bytes.
 
+=== Program Header Table
+
+The defined processor-specific segment types are listed in <<rv-seg-type>>.
+
+[[rv-seg-type]]
+.RISC-V-specific segment types
+[cols="3,2,3"]
+[width=80%]
+|===
+| Name                 | Value       | Meaning
+
+| PT_RISCV_ATTRIBUTES  | 0x70000003  | RISC-V ELF attribute section.
+|===
+
+`PT_RISCV_ATTRIBUTES` describes the location of RISC-V ELF attribute section.
+
+WARNING: `PT_RISCV_ATTRIBUTES` is deprecated. The build attributes section does
+not contain the `SHF_ALLOC` flag. Dynamic loaders cannot assume that the region
+described by `PT_RISCV_ATTRIBUTES` is present.
+
 === Note Sections
 
 There are no RISC-V specific definitions relating to ELF note sections.