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riscv(interp): add DWARF info

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gns 2024-03-06 09:42:05 +08:00 committed by gns
parent bd6f9fcdb1
commit 6a2c877aa8
1 changed files with 131 additions and 1 deletions
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132
src/vm_riscv64.dasc
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@ -4680,5 +4680,135 @@ static int build_backend(BuildCtx *ctx)
/* Emit pseudo frame-info for all assembler functions. */
static void emit_asm_debug(BuildCtx *ctx)
{
int fcofs = (int)((uint8_t *)ctx->glob[GLOB_vm_ffi_call] - ctx->code);
int i;
switch (ctx->mode) {
case BUILD_elfasm:
fprintf(ctx->fp, "\t.section .debug_frame,\"\",@progbits\n");
fprintf(ctx->fp,
".Lframe0:\n"
"\t.4byte .LECIE0-.LSCIE0\n"
".LSCIE0:\n"
"\t.4byte 0xffffffff\n"
"\t.byte 0x1\n"
"\t.string \"\"\n"
"\t.uleb128 0x1\n"
"\t.sleb128 -4\n"
"\t.byte 1\n" /* Return address is in ra. */
"\t.byte 0xc\n\t.uleb128 2\n\t.uleb128 0\n" /* def_cfa sp 0 */
"\t.align 3\n"
".LECIE0:\n\n");
fprintf(ctx->fp,
".LSFDE0:\n"
"\t.4byte .LEFDE0-.LASFDE0\n"
".LASFDE0:\n"
"\t.4byte .Lframe0\n"
"\t.8byte .Lbegin\n"
"\t.8byte %d\n"
"\t.byte 0xe\n\t.uleb128 %d\n"
"\t.byte 0x81\n\t.uleb128 2*6\n" /* offset ra */,
fcofs, CFRAME_SIZE);
for (i = 27; i >= 18; i--) /* offset x27-x18 (s11-s2) */
fprintf(ctx->fp, "\t.byte %d\n\t.uleb128 %d\n", 0x80+i, 2*(27-i+7));
fprintf(ctx->fp,
"\t.byte 0x89\n\t.uleb128 2*17\n" /* offset x9 (s1) */
"\t.byte 0x88\n\t.uleb128 2*18\n" /* offset x8 (s0/fp) */);
for (i = 27; i >= 18; i--) /* offset f31-f18 */
fprintf(ctx->fp, "\t.byte %d\n\t.uleb128 %d\n", 0x80+32+i, 2*(27-i+19));
fprintf(ctx->fp,
"\t.byte 0x89+32\n\t.uleb128 2*29\n" /* offset f9 (fs1) */
"\t.byte 0x88+32\n\t.uleb128 2*30\n" /* offset f8 (fs0) */
"\t.align 3\n"
".LEFDE0:\n\n");
#if LJ_HASFFI
fprintf(ctx->fp,
".LSFDE1:\n"
"\t.4byte .LEFDE1-.LASFDE1\n"
".LASFDE1:\n"
"\t.4byte .Lframe0\n"
"\t.4byte lj_vm_ffi_call\n"
"\t.4byte %d\n"
"\t.byte 0x81\n\t.uleb128 2*1\n" /* offset ra */
"\t.byte 0x92\n\t.uleb128 2*2\n" /* offset x18 */
"\t.byte 0xd\n\t.uleb128 0x12\n"
"\t.align 3\n"
".LEFDE1:\n\n", (int)ctx->codesz - fcofs);
#endif
#if !LJ_NO_UNWIND
fprintf(ctx->fp, "\t.section .eh_frame,\"a\",@progbits\n");
fprintf(ctx->fp,
".Lframe1:\n"
"\t.4byte .LECIE1-.LSCIE1\n"
".LSCIE1:\n"
"\t.4byte 0\n"
"\t.byte 0x1\n"
"\t.string \"zPR\"\n"
"\t.uleb128 0x1\n"
"\t.sleb128 -4\n"
"\t.byte 1\n" /* Return address is in ra. */
"\t.uleb128 6\n" /* augmentation length */
"\t.byte 0x1b\n"
"\t.4byte lj_err_unwind_dwarf-.\n"
"\t.byte 0x1b\n"
"\t.byte 0xc\n\t.uleb128 2\n\t.uleb128 0\n" /* def_cfa sp 0 */
"\t.align 2\n"
".LECIE1:\n\n");
fprintf(ctx->fp,
".LSFDE2:\n"
"\t.4byte .LEFDE2-.LASFDE2\n"
".LASFDE2:\n"
"\t.4byte .LASFDE2-.Lframe1\n"
"\t.4byte .Lbegin-.\n"
"\t.4byte %d\n"
"\t.uleb128 0\n" /* augmentation length */
"\t.byte 0xe\n\t.uleb128 %d\n"
"\t.byte 0x81\n\t.uleb128 2*6\n", /* offset ra */
fcofs, CFRAME_SIZE);
for (i = 27; i >= 18; i--) /* offset x27-x18 (s11-s2) */
fprintf(ctx->fp, "\t.byte %d\n\t.uleb128 %d\n", 0x80+i, 2*(27-i+7));
fprintf(ctx->fp,
"\t.byte 0x89\n\t.uleb128 2*17\n" /* offset x9 (s1) */
"\t.byte 0x88\n\t.uleb128 2*18\n" /* offset x8 (s0/fp) */);
for (i = 27; i >= 18; i--) /* offset f31-f18 */
fprintf(ctx->fp, "\t.byte %d\n\t.uleb128 %d\n", 0x80+32+i, 2*(27-i+19));
fprintf(ctx->fp,
"\t.byte 0x89+32\n\t.uleb128 2*29\n" /* offset f9 (fs1) */
"\t.byte 0x88+32\n\t.uleb128 2*30\n" /* offset f8 (fs0) */
"\t.align 2\n"
".LEFDE2:\n\n");
#if LJ_HASFFI
fprintf(ctx->fp,
".Lframe2:\n"
"\t.4byte .LECIE2-.LSCIE2\n"
".LSCIE2:\n"
"\t.4byte 0\n"
"\t.byte 0x1\n"
"\t.string \"zR\"\n"
"\t.uleb128 0x1\n"
"\t.sleb128 -4\n"
"\t.byte 1\n" /* Return address is in ra. */
"\t.uleb128 1\n" /* augmentation length */
"\t.byte 0x1b\n"
"\t.byte 0xc\n\t.uleb128 2\n\t.uleb128 0\n" /* def_cfa sp 0 */
"\t.align 2\n"
".LECIE2:\n\n");
fprintf(ctx->fp,
".LSFDE3:\n"
"\t.4byte .LEFDE3-.LASFDE3\n"
".LASFDE3:\n"
"\t.4byte .LASFDE3- .Lframe2\n"
"\t.4byte lj_vm_ffi_call-.\n"
"\t.4byte %d\n"
"\t.uleb128 0\n" /* augmentation length */
"\t.byte 0x81\n\t.uleb128 2*1\n" /* offset ra */
"\t.byte 0x92\n\t.uleb128 2*2\n" /* offset x18 */
"\t.byte 0xd\n\t.uleb128 0x12\n"
"\t.align 2\n"
".LEFDE3:\n\n", (int)ctx->codesz - fcofs);
#endif
#endif
break;
default:
break;
}
}