aboutsummaryrefslogtreecommitdiff
path: root/gas/doc/c-sh.texi
diff options
context:
space:
mode:
authorRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
committerRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
commit252b5132c753830d5fd56823373aed85f2a0db63 (patch)
tree1af963bfd8d3e55167b81def4207f175eaff3a56 /gas/doc/c-sh.texi
downloadgdb-252b5132c753830d5fd56823373aed85f2a0db63.zip
gdb-252b5132c753830d5fd56823373aed85f2a0db63.tar.gz
gdb-252b5132c753830d5fd56823373aed85f2a0db63.tar.bz2
19990502 sourceware importbinu_ss_19990502
Diffstat (limited to 'gas/doc/c-sh.texi')
-rw-r--r--gas/doc/c-sh.texi272
1 files changed, 272 insertions, 0 deletions
diff --git a/gas/doc/c-sh.texi b/gas/doc/c-sh.texi
new file mode 100644
index 0000000..e20f554
--- /dev/null
+++ b/gas/doc/c-sh.texi
@@ -0,0 +1,272 @@
+@c Copyright (C) 1991, 92, 93, 94, 95, 1997 Free Software Foundation, Inc.
+@c This is part of the GAS manual.
+@c For copying conditions, see the file as.texinfo.
+@page
+@node SH-Dependent
+@chapter Hitachi SH Dependent Features
+
+@cindex SH support
+@menu
+* SH Options:: Options
+* SH Syntax:: Syntax
+* SH Floating Point:: Floating Point
+* SH Directives:: SH Machine Directives
+* SH Opcodes:: Opcodes
+@end menu
+
+@node SH Options
+@section Options
+
+@cindex SH options (none)
+@cindex options, SH (none)
+@code{@value{AS}} has no additional command-line options for the Hitachi
+SH family.
+
+@node SH Syntax
+@section Syntax
+
+@menu
+* SH-Chars:: Special Characters
+* SH-Regs:: Register Names
+* SH-Addressing:: Addressing Modes
+@end menu
+
+@node SH-Chars
+@subsection Special Characters
+
+@cindex line comment character, SH
+@cindex SH line comment character
+@samp{!} is the line comment character.
+
+@cindex line separator, SH
+@cindex statement separator, SH
+@cindex SH line separator
+You can use @samp{;} instead of a newline to separate statements.
+
+@cindex symbol names, @samp{$} in
+@cindex @code{$} in symbol names
+Since @samp{$} has no special meaning, you may use it in symbol names.
+
+@node SH-Regs
+@subsection Register Names
+
+@cindex SH registers
+@cindex registers, SH
+You can use the predefined symbols @samp{r0}, @samp{r1}, @samp{r2},
+@samp{r3}, @samp{r4}, @samp{r5}, @samp{r6}, @samp{r7}, @samp{r8},
+@samp{r9}, @samp{r10}, @samp{r11}, @samp{r12}, @samp{r13}, @samp{r14},
+and @samp{r15} to refer to the SH registers.
+
+The SH also has these control registers:
+
+@table @code
+@item pr
+procedure register (holds return address)
+
+@item pc
+program counter
+
+@item mach
+@itemx macl
+high and low multiply accumulator registers
+
+@item sr
+status register
+
+@item gbr
+global base register
+
+@item vbr
+vector base register (for interrupt vectors)
+@end table
+
+@node SH-Addressing
+@subsection Addressing Modes
+
+@cindex addressing modes, SH
+@cindex SH addressing modes
+@code{@value{AS}} understands the following addressing modes for the SH.
+@code{R@var{n}} in the following refers to any of the numbered
+registers, but @emph{not} the control registers.
+
+@table @code
+@item R@var{n}
+Register direct
+
+@item @@R@var{n}
+Register indirect
+
+@item @@-R@var{n}
+Register indirect with pre-decrement
+
+@item @@R@var{n}+
+Register indirect with post-increment
+
+@item @@(@var{disp}, R@var{n})
+Register indirect with displacement
+
+@item @@(R0, R@var{n})
+Register indexed
+
+@item @@(@var{disp}, GBR)
+@code{GBR} offset
+
+@item @@(R0, GBR)
+GBR indexed
+
+@item @var{addr}
+@itemx @@(@var{disp}, PC)
+PC relative address (for branch or for addressing memory). The
+@code{@value{AS}} implementation allows you to use the simpler form
+@var{addr} anywhere a PC relative address is called for; the alternate
+form is supported for compatibility with other assemblers.
+
+@item #@var{imm}
+Immediate data
+@end table
+
+@node SH Floating Point
+@section Floating Point
+
+@cindex floating point, SH (@sc{ieee})
+@cindex SH floating point (@sc{ieee})
+The SH family has no hardware floating point, but the @code{.float}
+directive generates @sc{ieee} floating-point numbers for compatibility
+with other development tools.
+
+@node SH Directives
+@section SH Machine Directives
+
+@cindex SH machine directives
+@cindex machine directives, SH
+@cindex @code{uaword} directive, SH
+@cindex @code{ualong} directive, SH
+
+@table @code
+@item uaword
+@itemx ualong
+@code{@value{AS}} will issue a warning when a misaligned @code{.word} or
+@code{.long} directive is used. You may use @code{.uaword} or
+@code{.ualong} to indicate that the value is intentionally misaligned.
+@end table
+
+@node SH Opcodes
+@section Opcodes
+
+@cindex SH opcode summary
+@cindex opcode summary, SH
+@cindex mnemonics, SH
+@cindex instruction summary, SH
+For detailed information on the SH machine instruction set, see
+@cite{SH-Microcomputer User's Manual} (Hitachi Micro Systems, Inc.).
+
+@code{@value{AS}} implements all the standard SH opcodes. No additional
+pseudo-instructions are needed on this family. Note, however, that
+because @code{@value{AS}} supports a simpler form of PC-relative
+addressing, you may simply write (for example)
+
+@example
+mov.l bar,r0
+@end example
+
+@noindent
+where other assemblers might require an explicit displacement to
+@code{bar} from the program counter:
+
+@example
+mov.l @@(@var{disp}, PC)
+@end example
+
+@ifset SMALL
+@c this table, due to the multi-col faking and hardcoded order, looks silly
+@c except in smallbook. See comments below "@set SMALL" near top of this file.
+
+Here is a summary of SH opcodes:
+
+@page
+@smallexample
+@i{Legend:}
+Rn @r{a numbered register}
+Rm @r{another numbered register}
+#imm @r{immediate data}
+disp @r{displacement}
+disp8 @r{8-bit displacement}
+disp12 @r{12-bit displacement}
+
+add #imm,Rn lds.l @@Rn+,PR
+add Rm,Rn mac.w @@Rm+,@@Rn+
+addc Rm,Rn mov #imm,Rn
+addv Rm,Rn mov Rm,Rn
+and #imm,R0 mov.b Rm,@@(R0,Rn)
+and Rm,Rn mov.b Rm,@@-Rn
+and.b #imm,@@(R0,GBR) mov.b Rm,@@Rn
+bf disp8 mov.b @@(disp,Rm),R0
+bra disp12 mov.b @@(disp,GBR),R0
+bsr disp12 mov.b @@(R0,Rm),Rn
+bt disp8 mov.b @@Rm+,Rn
+clrmac mov.b @@Rm,Rn
+clrt mov.b R0,@@(disp,Rm)
+cmp/eq #imm,R0 mov.b R0,@@(disp,GBR)
+cmp/eq Rm,Rn mov.l Rm,@@(disp,Rn)
+cmp/ge Rm,Rn mov.l Rm,@@(R0,Rn)
+cmp/gt Rm,Rn mov.l Rm,@@-Rn
+cmp/hi Rm,Rn mov.l Rm,@@Rn
+cmp/hs Rm,Rn mov.l @@(disp,Rn),Rm
+cmp/pl Rn mov.l @@(disp,GBR),R0
+cmp/pz Rn mov.l @@(disp,PC),Rn
+cmp/str Rm,Rn mov.l @@(R0,Rm),Rn
+div0s Rm,Rn mov.l @@Rm+,Rn
+div0u mov.l @@Rm,Rn
+div1 Rm,Rn mov.l R0,@@(disp,GBR)
+exts.b Rm,Rn mov.w Rm,@@(R0,Rn)
+exts.w Rm,Rn mov.w Rm,@@-Rn
+extu.b Rm,Rn mov.w Rm,@@Rn
+extu.w Rm,Rn mov.w @@(disp,Rm),R0
+jmp @@Rn mov.w @@(disp,GBR),R0
+jsr @@Rn mov.w @@(disp,PC),Rn
+ldc Rn,GBR mov.w @@(R0,Rm),Rn
+ldc Rn,SR mov.w @@Rm+,Rn
+ldc Rn,VBR mov.w @@Rm,Rn
+ldc.l @@Rn+,GBR mov.w R0,@@(disp,Rm)
+ldc.l @@Rn+,SR mov.w R0,@@(disp,GBR)
+ldc.l @@Rn+,VBR mova @@(disp,PC),R0
+lds Rn,MACH movt Rn
+lds Rn,MACL muls Rm,Rn
+lds Rn,PR mulu Rm,Rn
+lds.l @@Rn+,MACH neg Rm,Rn
+lds.l @@Rn+,MACL negc Rm,Rn
+@page
+nop stc VBR,Rn
+not Rm,Rn stc.l GBR,@@-Rn
+or #imm,R0 stc.l SR,@@-Rn
+or Rm,Rn stc.l VBR,@@-Rn
+or.b #imm,@@(R0,GBR) sts MACH,Rn
+rotcl Rn sts MACL,Rn
+rotcr Rn sts PR,Rn
+rotl Rn sts.l MACH,@@-Rn
+rotr Rn sts.l MACL,@@-Rn
+rte sts.l PR,@@-Rn
+rts sub Rm,Rn
+sett subc Rm,Rn
+shal Rn subv Rm,Rn
+shar Rn swap.b Rm,Rn
+shll Rn swap.w Rm,Rn
+shll16 Rn tas.b @@Rn
+shll2 Rn trapa #imm
+shll8 Rn tst #imm,R0
+shlr Rn tst Rm,Rn
+shlr16 Rn tst.b #imm,@@(R0,GBR)
+shlr2 Rn xor #imm,R0
+shlr8 Rn xor Rm,Rn
+sleep xor.b #imm,@@(R0,GBR)
+stc GBR,Rn xtrct Rm,Rn
+stc SR,Rn
+@end smallexample
+@end ifset
+
+@ifset Hitachi-all
+@ifclear GENERIC
+@raisesections
+@end ifclear
+@end ifset
+