Hi, It turns out that x32 needs R_X86_64_64. One major reason is the displacement range of x32 is -2G to +2G. It isn't a problem for compiler since only small model is required for x32.
However, to address 0 to 4G directly in assembly code, we have to use R_X86_64_64 with movabs. I am checking the follow patch into x32 psABI to allow R_X86_64_64. -- H.J. diff --git a/object-files.tex b/object-files.tex index 3c9b9c6..7f0fd14 100644 --- a/object-files.tex +++ b/object-files.tex @@ -451,7 +451,7 @@ or \texttt{Elf32_Rel} relocation. \multicolumn{1}{c}{Calculation} \\ \hline \texttt{R_X86_64_NONE} & 0 & none & none \\ - \texttt{R_X86_64_64} $^\dagger$ & 1 & \textit{word64} & \texttt{S + A} \\ + \texttt{R_X86_64_64} & 1 & \textit{word64} & \texttt{S + A} \\ \texttt{R_X86_64_PC32} & 2 & \textit{word32} & \texttt{S + A - P} \\ \texttt{R_X86_64_GOT32} & 3 & \textit{word32} & \texttt{G + A} \\ \texttt{R_X86_64_PLT32} & 4 & \textit{word32} & \texttt{L + A - P} \\