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target-tilegx: Support iret instruction and related special registers

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EX_CONTEXT_0_0 is used for jumping address, and EX_CONTEXT_0_1 is for
INTERRUPT_CRITICAL_SECTION, which should only be 0 or 1 in user mode, or
it will cause target SIGILL (and the patch doesn't support system mode).

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Chen Gang 2015-10-04 17:41:14 +08:00 • committed by Richard Henderson
parent 77b3adc001
commit fec7daab3d
4 changed files with 38 additions and 1 deletions
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1
target-tilegx/helper.h
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@ -1,4 +1,5 @@
DEF_HELPER_2(exception, noreturn, env, i32)
DEF_HELPER_1(ext01_ics, void, env)
DEF_HELPER_FLAGS_1(cntlz, TCG_CALL_NO_RWG_SE, i64, i64)
DEF_HELPER_FLAGS_1(cnttz, TCG_CALL_NO_RWG_SE, i64, i64)
DEF_HELPER_FLAGS_1(pcnt, TCG_CALL_NO_RWG_SE, i64, i64)