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repair pb loading for big-endian architectures #741

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merged 2 commits into from
Oct 23, 2023
Merged

repair pb loading for big-endian architectures #741

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77ac1c2
configure: fix detection of ppc32osx
mflatt Oct 22, 2023
131719f
repair pb loading for big-endian architectures
mflatt Oct 22, 2023
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7 changes: 4 additions & 3 deletions c/fasl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2159,9 +2159,10 @@ void S_swap_dounderflow_header_endian(ptr co)
/* The `dounderflow` library entry starts with a header, so
it does not have a `pb_adr` instruction before. We need
to finish swapping the header's `ptr`-sized values, but
the mv-return address is already linked, so the only
thing to fix turns out to be the first `ptr`. */
uint32_t *code = (uint32_t *)&CODEIT(co, 0);
the mv-return address is already linked, and the live mask
and frame size are 0, so the only thing to fix turns out
to be the toplink `uptr`. */
uint32_t *code = (uint32_t *)&RPHEADERTOPLINK(TO_PTR(&CODEIT(co, 0)));
uint32_t a = code[0];
uint32_t b = code[1];
code[0] = b;
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4 changes: 2 additions & 2 deletions configure
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Expand Up @@ -144,8 +144,8 @@ case "${CONFIG_UNAME}" in
m64=arm64osx
tm64=tarm64osx
elif uname -m | egrep 'Power' > /dev/null 2>&1 ; then
m64=ppc32osx
tm64=tppc32osx
m32=ppc32osx
tm32=tppc32osx
pbendian=b
default_warning_flags=""
fi
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