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util/crossgcc/buildgcc: Compile RISC-V GCC with medany 

currently the HiFive Unmatched mainboard produces the following error:
```
util/crossgcc/xgcc/lib/gcc/riscv64-elf/13.2.0/rv64imafdc/lp64d/libgcc.a
(_clzsi2.o): in function `__clzdi2':
util/crossgcc/gcc-13.2.0/libgcc/libgcc2.c:690:(.text+0x1e): relocation
truncated to fit: R_RISCV_HI20 against symbol `__clz_tab' defined in
.rodata section in util/crossgcc/xgcc/lib/gcc/riscv64-elf/13.2.0/
rv64imafdc/lp64d/libgcc.a(_clz.o)
```

This is due to the fact that the libgcc.a library is compiled with the
medlow code model but the mainboards are compiled with the medany code
model.

Changing the code model of the GCC libraries to the medany code model
fixes the issue.

Signed-off-by: Maximilian Brune <maximilian.brune@9elements.com>
Change-Id: If5f07ce034686dd7fec160ea76838507c0ba7fa0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80139
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: ron minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Maximilian Brune 2024-01-18 18:15:17 +06:00 committed by Lean Sheng Tan
parent 8bbc07ef23
commit 732134932b
1 changed files with 6 additions and 1 deletions
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7
util/crossgcc/buildgcc
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@ -774,6 +774,11 @@ build_cross_GCC() {
[ -n "$CXX" ] && $CXX --version | grep clang >/dev/null 2>&1 && \
CLANGCXXFLAGS="-fbracket-depth=1024"
# standard code model is medlow but all mainboards are compiled with medany code model
if [ "${TARGETARCH}" = "riscv64-elf" ]; then
CFLAGS_FOR_TARGET_EXTRA="-mcmodel=medany"
fi
# GCC does not honor HOSTCFLAGS at all. CFLAGS are used for
# both target and host object files.
# There's a work-around called CFLAGS_FOR_BUILD and CFLAGS_FOR_TARGET
@ -783,7 +788,7 @@ build_cross_GCC() {
# using C++.
# shellcheck disable=SC2086
CC="$(hostcc target)" CXX="$(hostcxx target)" \
CFLAGS_FOR_TARGET="-O2 -Dinhibit_libc" \
CFLAGS_FOR_TARGET="${CFLAGS_FOR_TARGET_EXTRA} -O2 -Dinhibit_libc" \
CFLAGS="$HOSTCFLAGS $CLANGFLAGS" \
CFLAGS_FOR_BUILD="$HOSTCFLAGS $CLANGFLAGS" \
CXXFLAGS="$HOSTCFLAGS $CLANGCXXFLAGS" \