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Make linker fill alignment gaps with bkpt instruction #1305

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Make linker fill alignment gaps with bkpt instruction #1305

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4 changes: 4 additions & 0 deletions src/rp2_common/pico_standard_link/memmap_default.ld
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Original file line number Diff line number Diff line change
Expand Up @@ -86,6 +86,8 @@ SECTIONS
*(.eh_frame*)
. = ALIGN(4);
} > FLASH
/* bkpt has opcode 0xBE and one (ignored) immediate parameter, which we set to 0xBE, giving us 0xBEBE */
= 0xBEBE

.rodata : {
*(EXCLUDE_FILE(*libgcc.a: *libc.a:*lib_a-mem*.o *libm.a:) .rodata*)
Expand Down Expand Up @@ -125,11 +127,13 @@ SECTIONS
__data_start__ = .;
*(vtable)

FILL(0xBEBE)
*(.time_critical*)

/* remaining .text and .rodata; i.e. stuff we exclude above because we want it in RAM */
*(.text*)
. = ALIGN(4);
FILL(0)
*(.rodata*)
. = ALIGN(4);

Expand Down