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Diffstat (limited to 'erts/emulator/beam/ops.tab')
| -rw-r--r-- | erts/emulator/beam/ops.tab | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/erts/emulator/beam/ops.tab b/erts/emulator/beam/ops.tab index c3e71ff77a..349034e8ac 100644 --- a/erts/emulator/beam/ops.tab +++ b/erts/emulator/beam/ops.tab @@ -1167,6 +1167,38 @@ bs_context_to_binary Y=y => move Y x | bs_context_to_binary x bs_context_to_binary x +# Gets a bitstring from the tail of a context. +bs_get_tail xy d t + +# New bs_start_match variant for contexts with external position storage. +# +# bs_get/set_position is used to save positions into registers instead of +# "slots" in the context itself, which lets us continue matching even after +# we've passed it off to another function. + +%if ARCH_64 +bs_start_match3 Fail Bin Live Ctx | bs_get_position Ctx Pos=x Ignored => \ + i_bs_start_match3_gp Bin Live Fail Ctx Pos +i_bs_start_match3_gp xy t f d x +%endif + +bs_start_match3 Fail=f ica Live Dst => jump Fail +bs_start_match3 Fail Bin Live Dst => i_bs_start_match3 Bin Live Fail Dst + +i_bs_start_match3 xy t f d + +# Match context position instructions. 64-bit assumes that all positions can +# fit into an unsigned small. + +%if ARCH_64 + bs_get_position Src Dst Live => i_bs_get_position Src Dst + i_bs_get_position xy xy + bs_set_position xy xy +%else + bs_get_position xy d t? + bs_set_position xy xy +%endif + # # Utf8/utf16/utf32 support. (R12B-5) # |