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Remove cfi directives (undoing revs 1e0743dc, 5ec78a31, etc)

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Presumptive fix for lp#2071545 though I couldn't confirm
This commit is contained in:
Douglas Katzman 2024-06-30 23:17:37 -04:00
parent 686798965a
commit 39d2bb9aaa
1 changed files with 0 additions and 13 deletions
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13
src/runtime/x86-64-assem.S
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@ -121,7 +121,6 @@ GNAME(funcall1_switching_stack):
* anyway */
.align align_16byte,0x90
.cfi_startproc
GNAME(call_into_lisp_first_time_):
GNAME(lspmain): # so much easier to type 'b lspmain' in gdb
push %rbp # Save old frame pointer.
@ -157,8 +156,6 @@ Lstack:
push %r15
mov %rax,%r15
#endif
.cfi_def_cfa rbp, 16
.cfi_offset rbp, -16
/* FIXME x86 saves FPU state here */
push %rbx # these regs are callee-saved according to C
push %r12 # so must be preserved and restored when
@ -195,15 +192,6 @@ Lzero:
push %rbp # Dummy for return address
push %rbp # fp in save location S1
mov %rsp,%rbp # The current sp marks start of new frame.
#ifndef LISP_FEATURE_DARWIN
# This call frame info is valid but it makes macOS print a warning
# that I'm tired of seeing. I can't even remember why this helps.
# Inform unwinder that the new frame has not been entered yet.
# The CFA is what it was (old RBP+16) before the preceding mov.
# This sequence encodes DW_CFA_def_cfa_expression
# DW_OP_breg6 (rbp): 0 / DW_OP_deref / DW_OP_lit16 / DW_OP_plus
.cfi_escape 0x0f, 5, 0x76, 0, 6, 0x40, 0x22
#endif
Lcall:
LOAD_PIC_VAR(gc_card_mark, CARD_TABLE_REG)
call *CLOSURE_FUN_OFFSET(%rax)
@ -232,7 +220,6 @@ LsingleValue:
leave
#endif
ret
.cfi_endproc
SIZE(GNAME(call_into_lisp_))
.text