uclibc/gcc combined with elf2flt riscv linker file fully resolve the
PC relative __global_pointer$ value at compile time and do not generate
a relocation entry to set a runtime gp value. As a result, if the
flatbin loader introduces a gap between the text and data sections, the
gp value becomes incorrect and prevent correct execution of a flatbin
executable.
Avoid this problem by enabling CONFIG_BINFMT_FLAT_NO_TEXT_DATA_GAP
automatically when CONFIG_RISCV is enabled and CONFIG_MMU disabled.
Signed-off-by: Damien Le Moal <damien.lem...@wdc.com>
Acked-by: Palmer Dabbelt <palmerdabb...@google.com>
---
arch/riscv/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 0d0cf67359cb..6a85fbbd056e 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -33,6 +33,7 @@ config RISCV
select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
select ARCH_WANT_FRAME_POINTERS
select ARCH_WANT_HUGE_PMD_SHARE if 64BIT
+ select BINFMT_FLAT_NO_TEXT_DATA_GAP if !MMU
select CLONE_BACKWARDS
select CLINT_TIMER if !MMU
select COMMON_CLK
--
2.30.2
