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Fix remaining unwind values on vm frames

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Despite unwind working for vm frames, the change sent before was not
fully correct. By analysing the DWARF code with
"readelf --debug-dump=frames luajit" I noticed it was not well formated.
This commit is contained in:
Gustavo Serra Scalet 2017-09-04 10:51:51 -03:00
parent 13b769e3ad
commit 1401cfb2b3
1 changed files with 21 additions and 20 deletions
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41
src/vm_ppc64.dasc
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@ -4390,39 +4390,40 @@ static void emit_asm_debug(BuildCtx *ctx)
"\t.long 0xffffffff\n" /* CIE_Id */ "\t.long 0xffffffff\n" /* CIE_Id */
"\t.byte 0x1\n" /* Version */ "\t.byte 0x1\n" /* Version */
"\t.string \"\"\n" /* augmentation */ "\t.string \"\"\n" /* augmentation */
"\t.uleb128 0x1\n" /* code_alignment_factor */ "\t.uleb128 4\n" /* code_alignment_factor */
"\t.sleb128 -8\n" /* data_alignment_factor */ "\t.sleb128 -8\n" /* data_alignment_factor */
"\t.byte 65\n" /* return_address_register (LR) */ "\t.byte 65\n" /* return_address_register (LR) */
"\t.byte 0xc\n\t.uleb128 1\n\t.uleb128 %d\n" /* DW_CFA_def_cfa */ /* DW_CFA_def_cfa */
"\t.align 2\n" "\t.byte 0xc\n\t.uleb128 1\n\t.uleb128 0\n"
".LECIE0:\n\n", "\t.align 3\n"
CFRAME_SIZE); ".LECIE0:\n\n");
fprintf(ctx->fp, fprintf(ctx->fp,
".LSFDE0:\n" /* Frame Description Entry (FDE) */ ".LSFDE0:\n" /* Frame Description Entry (FDE) */
"\t.long .LEFDE0-.LASFDE0\n" /* length */ "\t.long .LEFDE0-.LASFDE0\n" /* length */
".LASFDE0:\n" ".LASFDE0:\n"
"\t.long .Lframe0\n" /* CIE_ptr */ "\t.long .Lframe0\n" /* CIE_ptr */
"\t.long .Lbegin\n" /* initial_location */ "\t.quad .Lbegin\n" /* initial_location */
"\t.long %d\n" /* address_range */ "\t.quad %d\n" /* address_range */
"\t.byte 0xe\n\t.uleb128 %d\n" /* DW_CFA_def_cfa_offset */
/* DW_CFA_offset_extended_sf (TOC) */
"\t.byte 0x11\n\t.uleb128 2\n\t.sleb128 %d\n"
/* DW_CFA_val_expression of size 9 for LR register */ /* DW_CFA_def_cfa_offset */
"\t.byte 0x16\n\t.uleb128 65\n\t.uleb128 9\n" "\t.byte 0xe\n\t.uleb128 %d\n"
"\t.byte 0x70\n\t.uleb128 1\n\t.sleb128 0\n" /* DW_OP_breg */
"\t.byte 0x06\n" /* DW_OP_deref */ /* DW_CFA_offset_extended_sf $lr */
"\t.byte 0x11\n\t.sleb128 16\n" /* DW_OP_consts */ "\t.byte 0x11\n\t.uleb128 65\n\t.sleb128 %d\n"
"\t.byte 0x22\n" /* DW_OP_plus */
"\t.byte 0x06\n", /* DW_OP_deref */ /* DW_CFA_offset (TOC) */
(int)ctx->codesz, CFRAME_SIZE, 24 / -8); "\t.byte 0x82\n\t.uleb128 %d\n",
(int)ctx->codesz, CFRAME_SIZE, 16/-8, (24-400)/-8);
for (i = 14; i <= 31; i++) for (i = 14; i <= 31; i++)
fprintf(ctx->fp, fprintf(ctx->fp,
"\t.byte %d\n\t.uleb128 %d\n" /* DW_CFA_offset from r14 to r31 */ "\t.byte %d\n\t.uleb128 %d\n" /* DW_CFA_offset from r14 to r31 */
"\t.byte %d\n\t.uleb128 %d\n", /* DW_CFA_offset from f14 to f31 */ "\t.byte %d\n\t.uleb128 %d\n", /* DW_CFA_offset from f14 to f31 */
0x80+i, 38+2*(31-i), 0x80+32+i, 2+2*(31-i)); // SAVE_GPR_ SAVE_FPR_
0x80+i, (112-400)/-8 + 14-i, 0x80+32+i, (256-400)/-8 + 14-i);
fprintf(ctx->fp, fprintf(ctx->fp,
"\t.align 2\n" "\t.align 3\n"
".LEFDE0:\n\n"); ".LEFDE0:\n\n");
break; break;
default: default: