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RISC-V: Fix minor bugs in .insn docs.

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This fixes some minor bugs in the docs for the .insn directive pointed out
by Frédéric Pétrot, and I added a few more cleanups since I was changing
the docs.

	gas/
	PR 26051
	* doc/c-riscv.texi (RISC-V-Formats): Add missing I format using
	simm12(rs1).  Correct S format to use simm12(rs1).  Drop SB and B
	formats using simm12(rs1).  Correct SB and B to use rs1 and rs2.
	Move B before SB.  Move J before UJ.
This commit is contained in:
Jim Wilson 2020-06-02 18:36:14 -07:00
parent 44730156af
commit bb7322c671
2 changed files with 15 additions and 7 deletions
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9
gas/ChangeLog
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@ -1,3 +1,12 @@
2020-06-02 Frédéric Pétrot <frederic.petrot@univ-grenoble-alpes.fr>
Jim Wilson <jimw@sifive.com>
PR 26051
* doc/c-riscv.texi (RISC-V-Formats): Add missing I format using
simm12(rs1). Correct S format to use simm12(rs1). Drop SB and B
formats using simm12(rs1). Correct SB and B to use rs1 and rs2.
Move B before SB. Move J before UJ.
2020-06-01 Alex Coplan <alex.coplan@arm.com>
* write.c (relax_segment): Fix handling of negative offset when

13
gas/doc/c-riscv.texi
View File

@ -497,6 +497,7 @@ with the @samp{.insn} pseudo directive:
@end verbatim
@item I type: .insn i opcode, func3, rd, rs1, simm12
@itemx I type: .insn i opcode, func3, rd, simm12(rs1)
@verbatim
+-------------+-----+-------+----+-------------+
| simm12 | rs1 | func3 | rd | opcode |
@ -504,7 +505,7 @@ with the @samp{.insn} pseudo directive:
31 20 15 12 7 0
@end verbatim
@item S type: .insn s opcode, func3, rd, rs1, simm12
@item S type: .insn s opcode, func3, rs2, simm12(rs1)
@verbatim
+--------------+-----+-----+-------+-------------+-------------+
| simm12[11:5] | rs2 | rs1 | func3 | simm12[4:0] | opcode |
@ -512,10 +513,8 @@ with the @samp{.insn} pseudo directive:
31 25 20 15 12 7 0
@end verbatim
@item SB type: .insn sb opcode, func3, rd, rs1, symbol
@itemx SB type: .insn sb opcode, func3, rd, simm12(rs1)
@itemx B type: .insn s opcode, func3, rd, rs1, symbol
@itemx B type: .insn s opcode, func3, rd, simm12(rs1)
@item B type: .insn s opcode, func3, rs1, rs2, symbol
@itemx SB type: .insn sb opcode, func3, rs1, rs2, symbol
@verbatim
+------------+--------------+-----+-----+-------+-------------+-------------+--------+
| simm12[12] | simm12[10:5] | rs2 | rs1 | func3 | simm12[4:1] | simm12[11]] | opcode |
@ -531,8 +530,8 @@ with the @samp{.insn} pseudo directive:
31 12 7 0
@end verbatim
@item UJ type: .insn uj opcode, rd, symbol
@itemx J type: .insn j opcode, rd, symbol
@item J type: .insn j opcode, rd, symbol
@itemx UJ type: .insn uj opcode, rd, symbol
@verbatim
+------------+--------------+------------+---------------+----+-------------+
| simm20[20] | simm20[10:1] | simm20[11] | simm20[19:12] | rd | opcode |