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tcg/arm: Drop support for armv4 and armv5 hosts

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Support for unaligned accesses is difficult for pre-v6 hosts.
While debian still builds for armv4, we cannot use a compile
time test, so test the architecture at runtime and error out.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-01-02 17:42:07 -08:00
parent 6f78c7b082
commit 01dfc0ed7f
1 changed files with 5 additions and 0 deletions
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5
tcg/arm/tcg-target.c.inc
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@ -2474,6 +2474,11 @@ static void tcg_target_init(TCGContext *s)
if (pl != NULL && pl[0] == 'v' && pl[1] >= '4' && pl[1] <= '9') { if (pl != NULL && pl[0] == 'v' && pl[1] >= '4' && pl[1] <= '9') {
arm_arch = pl[1] - '0'; arm_arch = pl[1] - '0';
} }
if (arm_arch < 6) {
error_report("TCG: ARMv%d is unsupported; exiting", arm_arch);
exit(EXIT_FAILURE);
}
} }
tcg_target_available_regs[TCG_TYPE_I32] = ALL_GENERAL_REGS; tcg_target_available_regs[TCG_TYPE_I32] = ALL_GENERAL_REGS;