Tweak e_flags section

riscv-elf.adoc

@@ -142,9 +142,11 @@ EM_RISCV (243) for RISC-V ELF files.  We only support RISC-V v2 family ISAs,
 this support is implicit.
 
 e_flags:: Describes the format of this ELF file.  These flags are used by the
-linker to disallow linking ELF files with incompatible ABIs together.
+linker to disallow linking ELF files with incompatible ABIs together,
+<<e-flags-layout>> shows the layout of e_flags, and flag details are listed
+below.
 +
-
+[[e-flags-layout]]
 .Layout of e_flags
 [cols="1,2,1,1,3,5"]
 [width=80%]
@@ -154,6 +156,8 @@ linker to disallow linking ELF files with incompatible ABIs together.
 | RVC   | Float ABI  | RVE   | TSO   | *Reserved*  | *Non-standard extensions*
 |===
 
++
+--
   EF_RISCV_RVC (0x0001)::: This bit is set when the binary targets the C ABI,
   which allows instructions to be aligned to 16-bit boundaries (the base RV32
   and RV64 ISAs only allow 32-bit instruction alignment).  When linking
@@ -181,18 +185,19 @@ linker to disallow linking ELF files with incompatible ABIs together.
 
   EF_RISCV_TSO (0x0010)::: This bit is set when the binary requires the RVTSO
   memory consistency model.
-+
+
 Until such a time that the *Reserved* bits (0x00ffffe0) are allocated by future
 versions of this specification, they shall not be set by standard software.
 Non-standard extensions are free to use bits 24-31 for any purpose. This many
 conflict with other non-standard extensions.
-+
+
 NOTE: There is no provision for compatibility between conflicting uses of the
 e_flags bits reserved for non-standard extensions, and many standard RISC-V
 tools will ignore them. Do not use them unless you control both the toolchain
 and the operating system, and the ABI differences are so significant they
 cannot be done with a .RISCV.attributes tag nor an ELF note, such as using a
 different syscall ABI.
+--
 
 === Sections
 
@@ -211,7 +216,6 @@ the ABI in use.
 +
 The defined processor-specific `st_other` flags are listed in <<rv-st-other>>.
 +
-
 [[rv-st-other]]
 .RISC-V-specific `st_other` flags
 [cols="3,1"]