[Bug binutils/31687] New: [avr] Output of avr-objdump -P mem-usage missing .rodata

[gjl at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=31687

            Bug ID: 31687
           Summary: [avr] Output of avr-objdump -P mem-usage missing
                    .rodata
           Product: binutils
           Version: 2.42
            Status: NEW
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: gjl at gcc dot gnu.org
  Target Milestone: ---

As is appears, objdump deas ot consider output section .rodata.

.rodata output section is only present on emulations avrtiny, avrxmega3,
avrxmega2_flmap and avrxmega4_flmap.

For example, for some avrxmega3 device with the following

$ avr-objdump -h foo.elf

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
  0 .data         0000001c  00802800  0000015f  00000213  2**0
                  CONTENTS, ALLOC, LOAD, DATA
  1 .text         00000158  00000000  00000000  000000b4  2**1
                  CONTENTS, ALLOC, LOAD, READONLY, CODE
  2 .rodata       00000007  00004158  00000158  0000020c  2**0
                  CONTENTS, ALLOC, LOAD, READONLY, DATA
  3 .bss          00000008  0080281c  0080281c  0000022f  2**0
                  ALLOC
  4 .noinit       00000001  00802824  00802824  0000022f  2**0
                  ALLOC

Which are the following sizes in decimal:

.data   = 28
.text   = 344
.rodata = 7
.bss    = 8
.noinit = 1

The expected flash consumption is .text + .data + .rodata = 379 bytes, and RAM
consumption is .data + .bss + .noinit = 37 bytes.

The report from avr-size is correct:

   text    data     bss     dec     hex filename
    351      28       9     388     184 foo.elf

but the report from avr-objdump -P mem-usage is not:

AVR Memory Usage
----------------
Device: atmega4808

Program:     372 bytes (0.8% Full)
(.text + .data + .bootloader)

Data:         37 bytes (0.6% Full)
(.data + .bss + .noinit)

The "Program" size is missing .rodata.

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