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| author | Kevin O'Connor <kevin@koconnor.net> | 2014-09-24 15:58:12 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2014-10-11 13:41:53 -0400 |
| commit | eb88bf7db541aa2dd70cae869238cfb3003efb56 (patch) | |
| tree | 18fd9939a0dd8541da9b1c74d11a7d55253e419c /scripts | |
| parent | 9984b9df14a357b2c10972e8dbc17b627904c502 (diff) | |
| download | seabios-hppa-eb88bf7db541aa2dd70cae869238cfb3003efb56.zip seabios-hppa-eb88bf7db541aa2dd70cae869238cfb3003efb56.tar.gz seabios-hppa-eb88bf7db541aa2dd70cae869238cfb3003efb56.tar.bz2 | |
build: Support declaring 32bit C functions that must reside in the f-segment
Add support for a FUNCFSEG macro that will force a "32bit flat" C
function to be located in the f-segment. This is useful for 32bit
code with inline assembler that thunks to 16bit mode.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/layoutrom.py | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/scripts/layoutrom.py b/scripts/layoutrom.py index 2454920..dd770fe 100755 --- a/scripts/layoutrom.py +++ b/scripts/layoutrom.py @@ -197,11 +197,14 @@ def doLayout(sections, config, genreloc): textsections + rodatasections + datasections, sec16_start , segoffset=BUILD_BIOS_ADDR) - # Determine "fseg memory" data positions - sections32fseg = getSectionsCategory(sections, '32fseg') + # Determine 32bit "fseg memory" data positions + sections32textfseg = getSectionsCategory(sections, '32textfseg') + sec32textfseg_start, sec32textfseg_align = setSectionsStart( + sections32textfseg, sec32seg_start, 16) + sections32fseg = getSectionsCategory(sections, '32fseg') sec32fseg_start, sec32fseg_align = setSectionsStart( - sections32fseg, sec32seg_start, 16 + sections32fseg, sec32textfseg_start, 16 , segoffset=BUILD_BIOS_ADDR) # Determine 32flat runtime positions @@ -274,13 +277,14 @@ def doLayout(sections, config, genreloc): # Print statistics size16 = BUILD_BIOS_ADDR + BUILD_BIOS_SIZE - sec16_start size32seg = sec16_start - sec32seg_start - size32fseg = sec32seg_start - sec32fseg_start + size32textfseg = sec32seg_start - sec32textfseg_start + size32fseg = sec32textfseg_start - sec32fseg_start size32flat = sec32fseg_start - sec32flat_start size32init = sec32flat_start - sec32init_start sizelow = li.sec32low_end - li.sec32low_start print("16bit size: %d" % size16) print("32bit segmented size: %d" % size32seg) - print("32bit flat size: %d" % size32flat) + print("32bit flat size: %d" % (size32flat + size32textfseg)) print("32bit flat init size: %d" % size32init) print("Lowmem size: %d" % sizelow) print("f-segment var size: %d" % size32fseg) @@ -659,6 +663,8 @@ def main(): section.category = '32low' elif section.name.startswith('.data.varfseg.'): section.category = '32fseg' + elif section.name.startswith('.text.32fseg.'): + section.category = '32textfseg' elif section.name.startswith('.fixedaddr.'): section.category = 'fixed' elif section.fileid == '32flat' and section not in runtimesections: |