[Bug binutils/19158] New: GNURL78: Incorrect disassembler output generated by objdump for SFR registers.

[vinay.g at kpit dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19158

            Bug ID: 19158
           Summary: GNURL78: Incorrect disassembler output generated by
                    objdump for SFR registers.
           Product: binutils
           Version: 2.25
            Status: NEW
          Severity: critical
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: vinay.g at kpit dot com
  Target Milestone: ---

SFR registers are not visble in the disassembly generated by objdump utility.

//test.s
.text
.set sfr, 0xffff8
        mov     a, sfr
        mov     sfr, a
        mov     sfr, #123
        xch     a, sfr
.set sfrp, 0xffff8
        movw    ax, sfrp
        movw    sfrp, ax
        movw    sfrp, #0x1234

$rl78-elf-as test.s -o test.o -aln=test.lst
$rl78-elf-objdump -d test.o

Disassembly of section .text:

00000000 <.text>:
0:   8e f8                           mov     a, 0xffff8 
2:   9e f8                           mov     0xffff8, a 
4:   ce f8 7b                        mov     0xffff8, #123
7:   61 ab fa                        xch     a, 0xffffa
a:   ae f8                           movw    ax, sp
c:   be f8                           movw    sp, ax
e:   cb f8 34 12                     movw    0xffff8, #0x1234

Expected

Disassembly of section .text:

00000000 <.text>:
   0:   8e f8                           mov     a, spl
   2:   9e f8                           mov     spl, a
   4:   ce f8 7b                        mov     spl, #123
   7:   61 ab fa                        xch     a, psw
   a:   ae f8                           movw    ax, sp
   c:   be f8                           movw    sp, ax
   e:   cb f8 34 12                     movw    sp, #0x1234

For example,
the instruction "mov 0xffffa, a" was disassembled as "mov 0xffffa, a", here
"0xffffa" should have been replaced by "psw".

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