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| author | Richard Henderson <richard.henderson@linaro.org> | 2021-02-02 09:40:22 -1000 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2021-06-19 11:08:00 -0700 |
| commit | 6eea04347eb667f1326cb9b68c5b8f3d737f565d (patch) | |
| tree | 138cbacf66b4dca26dee726df9c398bf12bf960e /tcg/tci | |
| parent | 650898891837a9772a5410e73c637a55d99e1e50 (diff) | |
| download | qemu-6eea04347eb667f1326cb9b68c5b8f3d737f565d.zip qemu-6eea04347eb667f1326cb9b68c5b8f3d737f565d.tar.gz qemu-6eea04347eb667f1326cb9b68c5b8f3d737f565d.tar.bz2 | |
tcg/tci: Implement goto_ptr
This operation is critical to staying within the interpretation
loop longer, which avoids the overhead of setup and teardown for
many TBs.
The check in tcg_prologue_init is disabled because TCI does
want to use NULL to indicate exit, as opposed to branching to
a real epilogue.
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg/tci')
| -rw-r--r-- | tcg/tci/tcg-target-con-set.h | 1 | ||||
| -rw-r--r-- | tcg/tci/tcg-target.c.inc | 16 | ||||
| -rw-r--r-- | tcg/tci/tcg-target.h | 2 |
3 files changed, 18 insertions, 1 deletions
diff --git a/tcg/tci/tcg-target-con-set.h b/tcg/tci/tcg-target-con-set.h index 316730f..ae2dc3b 100644 --- a/tcg/tci/tcg-target-con-set.h +++ b/tcg/tci/tcg-target-con-set.h @@ -9,6 +9,7 @@ * Each operand should be a sequence of constraint letters as defined by * tcg-target-con-str.h; the constraint combination is inclusive or. */ +C_O0_I1(r) C_O0_I2(r, r) C_O0_I3(r, r, r) C_O0_I4(r, r, r, r) diff --git a/tcg/tci/tcg-target.c.inc b/tcg/tci/tcg-target.c.inc index f74328d..fc73c19 100644 --- a/tcg/tci/tcg-target.c.inc +++ b/tcg/tci/tcg-target.c.inc @@ -27,6 +27,9 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op) { switch (op) { + case INDEX_op_goto_ptr: + return C_O0_I1(r); + case INDEX_op_ld8u_i32: case INDEX_op_ld8s_i32: case INDEX_op_ld16u_i32: @@ -263,6 +266,15 @@ static void tcg_out_op_p(TCGContext *s, TCGOpcode op, void *p0) tcg_out32(s, insn); } +static void tcg_out_op_r(TCGContext *s, TCGOpcode op, TCGReg r0) +{ + tcg_insn_unit insn = 0; + + insn = deposit32(insn, 0, 8, op); + insn = deposit32(insn, 8, 4, r0); + tcg_out32(s, insn); +} + static void tcg_out_op_v(TCGContext *s, TCGOpcode op) { tcg_out32(s, (uint8_t)op); @@ -565,6 +577,10 @@ static void tcg_out_op(TCGContext *s, TCGOpcode opc, set_jmp_reset_offset(s, args[0]); break; + case INDEX_op_goto_ptr: + tcg_out_op_r(s, opc, args[0]); + break; + case INDEX_op_br: tcg_out_op_l(s, opc, arg_label(args[0])); break; diff --git a/tcg/tci/tcg-target.h b/tcg/tci/tcg-target.h index c9cbe50..6ced928 100644 --- a/tcg/tci/tcg-target.h +++ b/tcg/tci/tcg-target.h @@ -87,7 +87,7 @@ #define TCG_TARGET_HAS_muls2_i32 0 #define TCG_TARGET_HAS_muluh_i32 0 #define TCG_TARGET_HAS_mulsh_i32 0 -#define TCG_TARGET_HAS_goto_ptr 0 +#define TCG_TARGET_HAS_goto_ptr 1 #define TCG_TARGET_HAS_direct_jump 0 #define TCG_TARGET_HAS_qemu_st8_i32 0 |