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| author | Richard Henderson <richard.henderson@linaro.org> | 2023-04-18 18:34:31 +0200 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-05-16 15:21:39 -0700 |
| commit | 81f004b22354857a9cad9619a466a9d7eaffa975 (patch) | |
| tree | b7406917ab84d292a65a9a7f08eeff52535a7891 /tcg | |
| parent | a0d99b3f47a4fa0ccd07a9a8280b272167d18c15 (diff) | |
| download | qemu-81f004b22354857a9cad9619a466a9d7eaffa975.zip qemu-81f004b22354857a9cad9619a466a9d7eaffa975.tar.gz qemu-81f004b22354857a9cad9619a466a9d7eaffa975.tar.bz2 | |
tcg/loongarch64: Check the host supports unaligned accesses
This should be true of all loongarch64 running Linux.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg')
| -rw-r--r-- | tcg/loongarch64/tcg-target.c.inc | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tcg/loongarch64/tcg-target.c.inc b/tcg/loongarch64/tcg-target.c.inc index e651ec5..33d8e67 100644 --- a/tcg/loongarch64/tcg-target.c.inc +++ b/tcg/loongarch64/tcg-target.c.inc @@ -30,6 +30,7 @@ */ #include "../tcg-ldst.c.inc" +#include <asm/hwcap.h> #ifdef CONFIG_DEBUG_TCG static const char * const tcg_target_reg_names[TCG_TARGET_NB_REGS] = { @@ -1674,6 +1675,14 @@ static void tcg_target_qemu_prologue(TCGContext *s) static void tcg_target_init(TCGContext *s) { + unsigned long hwcap = qemu_getauxval(AT_HWCAP); + + /* Server and desktop class cpus have UAL; embedded cpus do not. */ + if (!(hwcap & HWCAP_LOONGARCH_UAL)) { + error_report("TCG: unaligned access support required; exiting"); + exit(EXIT_FAILURE); + } + tcg_target_available_regs[TCG_TYPE_I32] = ALL_GENERAL_REGS; tcg_target_available_regs[TCG_TYPE_I64] = ALL_GENERAL_REGS; |