Commit Graph

6 Commits

Author SHA1 Message Date
Chen Gang
fec7daab3d target-tilegx: Support iret instruction and related special registers
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>
2015-10-07 20:24:04 +11:00
Richard Henderson
a0577d2aa9 target-tilegx: Use TILEGX_EXCP_SIGNAL instead of TILEGX_EXCP_SEGV
Consolidate signal handling under a single exception.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-10-07 20:03:15 +11:00
Chen Gang
dd8070d865 target-tilegx: Decode ill pseudo-instructions
Notice raise and bpt, decoding the constants embedded in the
nop addil instruction in the x0 slot.

[rth: Generalize TILEGX_EXCP_OPCODE_ILL to TILEGX_EXCP_SIGNAL.
Drop validation of signal values.]

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Message-Id: <1443243635-4886-1-git-send-email-gang.chen.5i5j@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-10-07 20:03:15 +11:00
Richard Henderson
0583b23323 target-tilegx: Handle atomic instructions
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15 07:45:34 -07:00
Richard Henderson
9b9dc7acec target-tilegx: Generate SEGV properly
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15 07:45:28 -07:00
Chen Gang
9f64170df2 target-tilegx: Add cpu basic features for linux-user
It implements minimized cpu features for linux-user.

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <BLU436-SMTP114819BB03D853801AA9C3CB9660@phx.gbl>
Signed-off-by: Richard Henderson <rth@twiddle.net>
2015-09-15 07:41:36 -07:00