diff options
Diffstat (limited to 'gcc/except.c')
| -rw-r--r-- | gcc/except.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/gcc/except.c b/gcc/except.c index 770ab98..673e9c3 100644 --- a/gcc/except.c +++ b/gcc/except.c @@ -1126,6 +1126,21 @@ sjlj_mark_call_sites (void) if (LABEL_P (insn)) last_call_site = -2; + /* If the function allocates dynamic stack space, the context must + be updated after every allocation/deallocation accordingly. */ + if (NOTE_P (insn) && NOTE_KIND (insn) == NOTE_INSN_UPDATE_SJLJ_CONTEXT) + { + rtx buf_addr; + + start_sequence (); + buf_addr = plus_constant (Pmode, XEXP (crtl->eh.sjlj_fc, 0), + sjlj_fc_jbuf_ofs); + expand_builtin_update_setjmp_buf (buf_addr); + p = get_insns (); + end_sequence (); + emit_insn_before (p, insn); + } + if (! INSN_P (insn)) continue; @@ -1495,6 +1510,18 @@ sjlj_build_landing_pads (void) sjlj_lp_call_site_index.release (); } +/* Update the sjlj function context. This function should be called + whenever we allocate or deallocate dynamic stack space. */ + +void +update_sjlj_context (void) +{ + if (!flag_exceptions) + return; + + emit_note (NOTE_INSN_UPDATE_SJLJ_CONTEXT); +} + /* After initial rtl generation, call back to finish generating exception support code. */ |