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authorAndy Wingo <wingo@pobox.com>2018-08-12 15:57:53 +0200
committerAndy Wingo <wingo@pobox.com>2018-08-12 15:57:53 +0200
commita20feea43e3a8cf2460c254fb65d5e3aed6bd756 (patch)
tree0db0ea0e21515d6eddc3055c4ad4a5b1613c4904 /libguile/throw.c
parent939b1ae23f680365fb6fd0a78653a281aaed95b6 (diff)
downloadguile-a20feea43e3a8cf2460c254fb65d5e3aed6bd756.tar.gz
Continuations capture machine code address
* libguile/continuations.c (scm_i_continuation_to_frame): Adapt to vra field renaming. (scm_i_reinstate_continuation, grow_stack, copy_stack_and_call) (scm_dynthrow): Take mra of continuation. Set on the vp before the longjmp. * libguile/continuations.h: Update scm_i_reinstate_continuation prototype. * libguile/dynstack.h: * libguile/control.c (scm_suspendable_continuation_p): * libguile/dynstack.c (PROMPT_WORDS, PROMPT_VRA, PROMPT_MRA): (PROMPT_JMPBUF, scm_dynstack_push_prompt, scm_dynstack_find_prompt) (scm_dynstack_wind_prompt): Store both virtual and machine return addresses on the dynstack, for prompts. * libguile/eval.c (eval): Pass NULL for mra. * libguile/intrinsics.c (push_prompt): Add mra arg, and pass it to the dynstack. * libguile/intrinsics.h: Update prototypes so that continuation-related intrinsics can save and restore the MRA. * libguile/jit.h: * libguile/jit.c: Return VRA when JIT code needs to tier down. * libguile/stacks.c (find_prompt, scm_make_stack) * libguile/throw.c (catch): Adapt find-prompt calls. * libguile/vm-engine.c (instrument-entry, instrument-loop): Add logic to continue with vcode after the mcode finishes. (compose-continuation, capture-continuation, abort, prompt): Add logic to pass NULL as captured MRA, but continue with mcode from new continuations, if appropriate. * libguile/vm.c (scm_i_vm_cont_to_frame, capture_stack) (scm_i_capture_current_stack, reinstate_continuation_x) (capture_continuation, compose_continuation_inner, compose_continuation) (capture_delimited_continuation, abort_to_prompt): Adapt to plumb around machine code continuations. (scm_call_n): Check "mra_after_abort" field for machine code continuation, if any. * libguile/vm.h (struct scm_vm): Add "mra_after_abort" field. (struct scm_vm_cont): Rename "ra" field to "vra" and add "mra" field.
Diffstat (limited to 'libguile/throw.c')
-rw-r--r--libguile/throw.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libguile/throw.c b/libguile/throw.c
index f1f854015..e0149dfef 100644
--- a/libguile/throw.c
+++ b/libguile/throw.c
@@ -88,6 +88,7 @@ catch (SCM tag, SCM thunk, SCM handler, SCM pre_unwind_handler)
jmp_buf registers;
jmp_buf *prev_registers;
ptrdiff_t saved_stack_depth;
+ uint8_t *mra = NULL;
if (!scm_is_eq (tag, SCM_BOOL_T) && !scm_is_symbol (tag))
scm_wrong_type_arg ("catch", 1, tag);
@@ -119,6 +120,7 @@ catch (SCM tag, SCM thunk, SCM handler, SCM pre_unwind_handler)
t->vm.stack_top - t->vm.fp,
saved_stack_depth,
t->vm.ip,
+ mra,
&registers);
scm_dynstack_push_fluid (dynstack, exception_handler_fluid, eh,
dynamic_state);