diff options
Diffstat (limited to 'tcg/README')
| -rw-r--r-- | tcg/README | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/tcg/README b/tcg/README index cfdfd96d0..27846f1ea 100644 --- a/tcg/README +++ b/tcg/README @@ -141,7 +141,7 @@ Define label 'label' at the current program point. Jump to label. -* brcond_i32/i64 cond, t0, t1, label +* brcond_i32/i64 t0, t1, cond, label Conditional jump if t0 cond t1 is true. cond can be: TCG_COND_EQ @@ -301,12 +301,18 @@ This operation would be equivalent to ********* Conditional moves -* setcond_i32/i64 cond, dest, t1, t2 +* setcond_i32/i64 dest, t1, t2, cond dest = (t1 cond t2) Set DEST to 1 if (T1 cond T2) is true, otherwise set to 0. +* movcond_i32/i64 dest, c1, c2, v1, v2, cond + +dest = (c1 cond c2 ? v1 : v2) + +Set DEST to V1 if (C1 cond C2) is true, otherwise set to V2. + ********* Type conversions * ext_i32_i64 t0, t1 @@ -354,7 +360,7 @@ The following opcodes are internal to TCG. Thus they are to be implemented by 32-bit host code generators, but are not to be emitted by guest translators. They are emitted as needed by inline functions within "tcg-op.h". -* brcond2_i32 cond, t0_low, t0_high, t1_low, t1_high, label +* brcond2_i32 t0_low, t0_high, t1_low, t1_high, cond, label Similar to brcond, except that the 64-bit values T0 and T1 are formed from two 32-bit arguments. @@ -371,7 +377,7 @@ is returned in two 32-bit outputs. Similar to mul, except two 32-bit (unsigned) inputs T1 and T2 yielding the full 64-bit product T0. The later is returned in two 32-bit outputs. -* setcond2_i32 cond, dest, t1_low, t1_high, t2_low, t2_high +* setcond2_i32 dest, t1_low, t1_high, t2_low, t2_high, cond Similar to setcond, except that the 64-bit values T1 and T2 are formed from two 32-bit arguments. The result is a 32-bit value. @@ -386,7 +392,8 @@ Exit the current TB and return the value t0 (word type). Exit the current TB and jump to the TB index 'index' (constant) if the current TB was linked to this TB. Otherwise execute the next -instructions. +instructions. Only indices 0 and 1 are valid and tcg_gen_goto_tb may be issued +at most once with each slot index per TB. * qemu_ld8u t0, t1, flags qemu_ld8s t0, t1, flags |