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Diff for /gforth/doc/gforth.ds between versions 1.215 and 1.216

version 1.215, 2010/04/10 14:36:34 version 1.216, 2010/04/10 15:19:27
Line 13046  directly encoded into the instruction mn Line 13046  directly encoded into the instruction mn
 and @code{^stm,}.  and @code{^stm,}.
   
 Addressing modes for load/store multiple are not encoded as  Addressing modes for load/store multiple are not encoded as
 instruction suffixes, but instead specified after the register that  instruction suffixes, but instead specified like an addressing mode,
 supplies the address.  Use one of @code{DA}, @code{IA}, @code{DB},  Use one of @code{DA}, @code{IA}, @code{DB}, @code{IB}, @code{DA!},
 @code{IB}, @code{DA!}, @code{IA!}, @code{DB!} or @code{IB!}.  @code{IA!}, @code{DB!} or @code{IB!}.
   
 The following table gives some examples:  The following table gives some examples:
   
 @example  @example
 Gforth                           normal assembler  Gforth                           normal assembler
 r4  @{ r0 r7 r8 @} ia  stm,        stmia    r4, @{r0,r7,r8@}  r4 ia  @{ r0 r7 r8 @}  stm,        stmia    r4, @{r0,r7,r8@}
 r4  @{ r0 r7 r8 @} db!  ldm,       ldmdb    r4!, @{r0,r7,r8@}  r4 db!  @{ r0 r7 r8 @}  ldm,       ldmdb    r4!, @{r0,r7,r8@}
 sp  @{ r0 r15 r-r @} ia!  ^ldm,    ldmfd    sp!, @{r0-r15@}^  sp ia!  @{ r0 r15 r-r @}  ^ldm,    ldmfd    sp!, @{r0-r15@}^
 @end example  @end example
   
 Control structure words typical for Forth assemblers are available:  Control structure words typical for Forth assemblers are available:
Line 13076  Example of a definition using the ARM as Line 13076  Example of a definition using the ARM as
 @example  @example
 abi-code my+ ( n1 n2 --  n3 )  abi-code my+ ( n1 n2 --  n3 )
    \ arm abi: r0=sp, r1=fp, r2, r3 saved by caller     \ arm abi: r0=sp, r1=fp, r2, r3 saved by caller
    r0  @{ r2 r3 @} IA!   ldm,     \ pop r2 = n2, r3 = n1     r0 IA!   @{ r2 r3 @}  ldm,     \ pop r2 = n2, r3 = n1
    r3   r2   r3        add,     \ r3 = n2+n1     r3   r2   r3        add,     \ r3 = n2+n1
    r3   r0 -4 #]!      str,     \ push r3     r3   r0 -4 #]!      str,     \ push r3
    pc   lr             mov,     \ return (r0=sp, r1=fp) to caller     pc   lr             mov,     \ return (r0=sp, r1=fp) to caller
Removed from v.1.215  
changed lines
  Added in v.1.216

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