Here is the ld -M output for the "bad" compile:
.data_nosave 0xc0376790 0x870 load address 0x00376790
0xc0377000 . = ALIGN (0x1000)
*fill* 0xc0376790 0x870 00
0xc0377000 __nosave_begin = .
*(.data.nosave)
0xc0377000 . = ALIGN (0x1000)
0xc0377000 __nosave_end = .
0xc0377000 . = ALIGN (0x1000)
0xc0377000 _edata = .
0xc0377000 PROVIDE (edata, .)
0xc0377000 . = ALIGN (0x0)
0xc0377000 __bss_start = .
0xc0377000 . = ALIGN (0x0)
.sbss 0xc0377000 0xad0 load address 0x00377000
Here is the ld -M output for a "good" compile (i.e. align before
the .data_nosave:
0xc0377000 . = ALIGN (0x1000)
.data_nosave 0xc0377000 0x0 load address 0x00377000
0xc0377000 __nosave_begin = .
*(.data.nosave)
0xc0377000 . = ALIGN (0x1000)
0xc0377000 __nosave_end = .
0xc0377000 . = ALIGN (0x1000)
0xc0377000 _edata = .
0xc0377000 PROVIDE (edata, .)
0xc0377000 . = ALIGN (0x0)
0xc0377000 __bss_start = .
0xc0377000 . = ALIGN (0x0)
.sbss 0xc0377000 0xad0 load address 0x00377000
It looks like putting the align before the .data.nosave puts all the
labels at the same address. Putting it *after* allows the .data_nosave
to be in a different page than the labels.
I can provide more info if needed. But it looks like everything is
nicely aligned, until the data_nosave, which needs the alignment. The
section before it is one of the few with stuff in it.
Cheers,
Sean
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