lol

1 files changed, 2176 insertions, 0 deletions

diff --git a/tinycc/tccdbg.c b/tinycc/tccdbg.c
new file mode 100644
index 0000000..18c2cb1
--- /dev/null
+++ b/tinycc/tccdbg.c
@@ -0,0 +1,2176 @@
+/*
+ *  TCC - Tiny C Compiler
+ *
+ *  Copyright (c) 2001-2004 Fabrice Bellard
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "tcc.h"
+
+/* stab debug support */
+
+static const struct {
+  int type;
+  int size;
+  int encoding;
+  const char *name;
+} default_debug[] = {
+    {   VT_INT, 4, DW_ATE_signed, "int:t1=r1;-2147483648;2147483647;" },
+    {   VT_BYTE, 1, DW_ATE_signed_char, "char:t2=r2;0;127;" },
+#if LONG_SIZE == 4
+    {   VT_LONG | VT_INT, 4, DW_ATE_signed, "long int:t3=r3;-2147483648;2147483647;" },
+#else
+    {   VT_LLONG | VT_LONG, 8, DW_ATE_signed, "long int:t3=r3;-9223372036854775808;9223372036854775807;" },
+#endif
+    {   VT_INT | VT_UNSIGNED, 4, DW_ATE_unsigned, "unsigned int:t4=r4;0;037777777777;" },
+#if LONG_SIZE == 4
+    {   VT_LONG | VT_INT | VT_UNSIGNED, 4, DW_ATE_unsigned, "long unsigned int:t5=r5;0;037777777777;" },
+#else
+    /* use octal instead of -1 so size_t works (-gstabs+ in gcc) */
+    {   VT_LLONG | VT_LONG | VT_UNSIGNED, 8, DW_ATE_unsigned, "long unsigned int:t5=r5;0;01777777777777777777777;" },
+#endif
+    {   VT_QLONG, 16, DW_ATE_signed, "__int128:t6=r6;0;-1;" },
+    {   VT_QLONG | VT_UNSIGNED, 16, DW_ATE_unsigned, "__int128 unsigned:t7=r7;0;-1;" },
+    {   VT_LLONG, 8, DW_ATE_signed, "long long int:t8=r8;-9223372036854775808;9223372036854775807;" },
+    {   VT_LLONG | VT_UNSIGNED, 8, DW_ATE_unsigned, "long long unsigned int:t9=r9;0;01777777777777777777777;" },
+    {   VT_SHORT, 2, DW_ATE_signed, "short int:t10=r10;-32768;32767;" },
+    {   VT_SHORT | VT_UNSIGNED, 2, DW_ATE_unsigned, "short unsigned int:t11=r11;0;65535;" },
+    {   VT_BYTE | VT_DEFSIGN, 1, DW_ATE_signed_char, "signed char:t12=r12;-128;127;" },
+    {   VT_BYTE | VT_DEFSIGN | VT_UNSIGNED, 1, DW_ATE_unsigned_char, "unsigned char:t13=r13;0;255;" },
+    {   VT_FLOAT, 4, DW_ATE_float, "float:t14=r1;4;0;" },
+    {   VT_DOUBLE, 8, DW_ATE_float, "double:t15=r1;8;0;" },
+#ifdef TCC_USING_DOUBLE_FOR_LDOUBLE
+    {   VT_DOUBLE | VT_LONG, 8, DW_ATE_float, "long double:t16=r1;8;0;" },
+#else
+    {   VT_LDOUBLE, 16, DW_ATE_float, "long double:t16=r1;16;0;" },
+#endif
+    {   -1, -1, -1, "_Float32:t17=r1;4;0;" },
+    {   -1, -1, -1, "_Float64:t18=r1;8;0;" },
+    {   -1, -1, -1, "_Float128:t19=r1;16;0;" },
+    {   -1, -1, -1, "_Float32x:t20=r1;8;0;" },
+    {   -1, -1, -1, "_Float64x:t21=r1;16;0;" },
+    {   -1, -1, -1, "_Decimal32:t22=r1;4;0;" },
+    {   -1, -1, -1, "_Decimal64:t23=r1;8;0;" },
+    {   -1, -1, -1, "_Decimal128:t24=r1;16;0;" },
+    /* if default char is unsigned */
+    {   VT_BYTE | VT_UNSIGNED, 1, DW_ATE_unsigned_char, "unsigned char:t25=r25;0;255;" },
+    /* boolean type */
+    {   VT_BOOL, 1, DW_ATE_boolean, "bool:t26=r26;0;255;" },
+#if LONG_SIZE == 4
+    {   VT_VOID, 1, DW_ATE_unsigned_char, "void:t27=27" },
+#else 
+    /* bitfields use these */
+    {   VT_LONG | VT_INT, 8, DW_ATE_signed, "long int:t27=r27;-9223372036854775808;9223372036854775807;" },
+    {   VT_LONG | VT_INT | VT_UNSIGNED, 8, DW_ATE_unsigned, "long unsigned int:t28=r28;0;01777777777777777777777;" },
+    {   VT_VOID, 1, DW_ATE_unsigned_char, "void:t29=29" },
+#endif
+};
+
+#define	N_DEFAULT_DEBUG	(sizeof (default_debug) / sizeof (default_debug[0]))
+
+/* dwarf debug */
+
+#define	DWARF_LINE_BASE				-5
+#define	DWARF_LINE_RANGE			14
+#define	DWARF_OPCODE_BASE			13
+
+#if defined TCC_TARGET_ARM64
+#define	DWARF_MIN_INSTR_LEN			4
+#elif defined TCC_TARGET_ARM
+#define	DWARF_MIN_INSTR_LEN			2
+#else
+#define	DWARF_MIN_INSTR_LEN			1
+#endif
+
+#define	DWARF_ABBREV_COMPILE_UNIT		1
+#define	DWARF_ABBREV_BASE_TYPE			2
+#define	DWARF_ABBREV_VARIABLE_EXTERNAL		3
+#define	DWARF_ABBREV_VARIABLE_STATIC		4
+#define	DWARF_ABBREV_VARIABLE_LOCAL		5
+#define	DWARF_ABBREV_FORMAL_PARAMETER		6
+#define	DWARF_ABBREV_POINTER			7
+#define	DWARF_ABBREV_ARRAY_TYPE			8
+#define	DWARF_ABBREV_SUBRANGE_TYPE		9
+#define	DWARF_ABBREV_TYPEDEF			10
+#define	DWARF_ABBREV_ENUMERATOR_SIGNED		11
+#define	DWARF_ABBREV_ENUMERATOR_UNSIGNED	12
+#define	DWARF_ABBREV_ENUMERATION_TYPE		13
+#define	DWARF_ABBREV_MEMBER			14
+#define	DWARF_ABBREV_MEMBER_BF			15
+#define	DWARF_ABBREV_STRUCTURE_TYPE		16
+#define	DWARF_ABBREV_STRUCTURE_EMPTY_TYPE	17
+#define	DWARF_ABBREV_UNION_TYPE			18
+#define	DWARF_ABBREV_UNION_EMPTY_TYPE		19
+#define	DWARF_ABBREV_SUBPROGRAM_EXTERNAL	20
+#define	DWARF_ABBREV_SUBPROGRAM_STATIC		21
+#define	DWARF_ABBREV_LEXICAL_BLOCK		22
+#define	DWARF_ABBREV_LEXICAL_EMPTY_BLOCK	23
+#define	DWARF_ABBREV_SUBROUTINE_TYPE		24
+#define	DWARF_ABBREV_SUBROUTINE_EMPTY_TYPE	25
+#define	DWARF_ABBREV_FORMAL_PARAMETER2		26
+
+/* all entries should have been generated with dwarf_uleb128 except
+   has_children. All values are currently below 128 so this currently
+   works.  */
+static const unsigned char dwarf_abbrev_init[] = {
+    DWARF_ABBREV_COMPILE_UNIT, DW_TAG_compile_unit, 1,
+          DW_AT_producer, DW_FORM_strp,
+          DW_AT_language, DW_FORM_data1,
+          DW_AT_name, DW_FORM_line_strp,
+          DW_AT_comp_dir, DW_FORM_line_strp,
+          DW_AT_low_pc, DW_FORM_addr,
+#if PTR_SIZE == 4
+          DW_AT_high_pc, DW_FORM_data4,
+#else
+          DW_AT_high_pc, DW_FORM_data8,
+#endif
+          DW_AT_stmt_list, DW_FORM_sec_offset,
+          0, 0,
+    DWARF_ABBREV_BASE_TYPE, DW_TAG_base_type, 0,
+          DW_AT_byte_size, DW_FORM_udata,
+          DW_AT_encoding, DW_FORM_data1,
+          DW_AT_name, DW_FORM_strp,
+          0, 0,
+    DWARF_ABBREV_VARIABLE_EXTERNAL, DW_TAG_variable, 0,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_decl_file, DW_FORM_udata,
+          DW_AT_decl_line, DW_FORM_udata,
+          DW_AT_type, DW_FORM_ref4,
+          DW_AT_external, DW_FORM_flag,
+          DW_AT_location, DW_FORM_exprloc,
+          0, 0,
+    DWARF_ABBREV_VARIABLE_STATIC, DW_TAG_variable, 0,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_decl_file, DW_FORM_udata,
+          DW_AT_decl_line, DW_FORM_udata,
+          DW_AT_type, DW_FORM_ref4,
+          DW_AT_location, DW_FORM_exprloc,
+          0, 0,
+    DWARF_ABBREV_VARIABLE_LOCAL, DW_TAG_variable, 0,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_type, DW_FORM_ref4,
+          DW_AT_location, DW_FORM_exprloc,
+          0, 0,
+    DWARF_ABBREV_FORMAL_PARAMETER, DW_TAG_formal_parameter, 0,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_type, DW_FORM_ref4,
+          DW_AT_location, DW_FORM_exprloc,
+          0, 0,
+    DWARF_ABBREV_POINTER, DW_TAG_pointer_type, 0,
+          DW_AT_byte_size, DW_FORM_data1,
+          DW_AT_type, DW_FORM_ref4,
+          0, 0,
+    DWARF_ABBREV_ARRAY_TYPE, DW_TAG_array_type, 1,
+          DW_AT_type, DW_FORM_ref4,
+          DW_AT_sibling, DW_FORM_ref4,
+          0, 0,
+    DWARF_ABBREV_SUBRANGE_TYPE, DW_TAG_subrange_type, 0,
+          DW_AT_type, DW_FORM_ref4,
+          DW_AT_upper_bound, DW_FORM_udata,
+          0, 0,
+    DWARF_ABBREV_TYPEDEF, DW_TAG_typedef, 0,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_decl_file, DW_FORM_udata,
+          DW_AT_decl_line, DW_FORM_udata,
+          DW_AT_type, DW_FORM_ref4,
+          0, 0,
+    DWARF_ABBREV_ENUMERATOR_SIGNED, DW_TAG_enumerator, 0,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_const_value, DW_FORM_sdata,
+          0, 0,
+    DWARF_ABBREV_ENUMERATOR_UNSIGNED, DW_TAG_enumerator, 0,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_const_value, DW_FORM_udata,
+          0, 0,
+    DWARF_ABBREV_ENUMERATION_TYPE, DW_TAG_enumeration_type, 1,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_encoding, DW_FORM_data1,
+          DW_AT_byte_size, DW_FORM_data1,
+          DW_AT_type, DW_FORM_ref4,
+          DW_AT_decl_file, DW_FORM_udata,
+          DW_AT_decl_line, DW_FORM_udata,
+          DW_AT_sibling, DW_FORM_ref4,
+          0, 0,
+    DWARF_ABBREV_MEMBER, DW_TAG_member, 0,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_decl_file, DW_FORM_udata,
+          DW_AT_decl_line, DW_FORM_udata,
+          DW_AT_type, DW_FORM_ref4,
+          DW_AT_data_member_location, DW_FORM_udata,
+          0, 0,
+    DWARF_ABBREV_MEMBER_BF, DW_TAG_member, 0,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_decl_file, DW_FORM_udata,
+          DW_AT_decl_line, DW_FORM_udata,
+          DW_AT_type, DW_FORM_ref4,
+          DW_AT_bit_size, DW_FORM_udata,
+          DW_AT_data_bit_offset, DW_FORM_udata,
+          0, 0,
+    DWARF_ABBREV_STRUCTURE_TYPE, DW_TAG_structure_type, 1,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_byte_size, DW_FORM_udata,
+          DW_AT_decl_file, DW_FORM_udata,
+          DW_AT_decl_line, DW_FORM_udata,
+          DW_AT_sibling, DW_FORM_ref4,
+          0, 0,
+    DWARF_ABBREV_STRUCTURE_EMPTY_TYPE, DW_TAG_structure_type, 0,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_byte_size, DW_FORM_udata,
+          DW_AT_decl_file, DW_FORM_udata,
+          DW_AT_decl_line, DW_FORM_udata,
+          0, 0,
+    DWARF_ABBREV_UNION_TYPE, DW_TAG_union_type, 1,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_byte_size, DW_FORM_udata,
+          DW_AT_decl_file, DW_FORM_udata,
+          DW_AT_decl_line, DW_FORM_udata,
+          DW_AT_sibling, DW_FORM_ref4,
+          0, 0,
+    DWARF_ABBREV_UNION_EMPTY_TYPE, DW_TAG_union_type, 0,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_byte_size, DW_FORM_udata,
+          DW_AT_decl_file, DW_FORM_udata,
+          DW_AT_decl_line, DW_FORM_udata,
+          0, 0,
+    DWARF_ABBREV_SUBPROGRAM_EXTERNAL, DW_TAG_subprogram, 1,
+          DW_AT_external, DW_FORM_flag,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_decl_file, DW_FORM_udata,
+          DW_AT_decl_line, DW_FORM_udata,
+          DW_AT_type, DW_FORM_ref4,
+          DW_AT_low_pc, DW_FORM_addr,
+#if PTR_SIZE == 4
+          DW_AT_high_pc, DW_FORM_data4,
+#else
+          DW_AT_high_pc, DW_FORM_data8,
+#endif
+          DW_AT_sibling, DW_FORM_ref4,
+	  DW_AT_frame_base, DW_FORM_exprloc,
+          0, 0,
+    DWARF_ABBREV_SUBPROGRAM_STATIC, DW_TAG_subprogram, 1,
+          DW_AT_name, DW_FORM_strp,
+          DW_AT_decl_file, DW_FORM_udata,
+          DW_AT_decl_line, DW_FORM_udata,
+          DW_AT_type, DW_FORM_ref4,
+          DW_AT_low_pc, DW_FORM_addr,
+#if PTR_SIZE == 4
+          DW_AT_high_pc, DW_FORM_data4,
+#else
+          DW_AT_high_pc, DW_FORM_data8,
+#endif
+          DW_AT_sibling, DW_FORM_ref4,
+	  DW_AT_frame_base, DW_FORM_exprloc,
+          0, 0,
+    DWARF_ABBREV_LEXICAL_BLOCK, DW_TAG_lexical_block, 1,
+          DW_AT_low_pc, DW_FORM_addr,
+#if PTR_SIZE == 4
+          DW_AT_high_pc, DW_FORM_data4,
+#else
+          DW_AT_high_pc, DW_FORM_data8,
+#endif
+          0, 0,
+    DWARF_ABBREV_LEXICAL_EMPTY_BLOCK, DW_TAG_lexical_block, 0,
+          DW_AT_low_pc, DW_FORM_addr,
+#if PTR_SIZE == 4
+          DW_AT_high_pc, DW_FORM_data4,
+#else
+          DW_AT_high_pc, DW_FORM_data8,
+#endif
+          0, 0,
+    DWARF_ABBREV_SUBROUTINE_TYPE, DW_TAG_subroutine_type, 1,
+          DW_AT_type, DW_FORM_ref4,
+          DW_AT_sibling, DW_FORM_ref4,
+          0, 0,
+    DWARF_ABBREV_SUBROUTINE_EMPTY_TYPE, DW_TAG_subroutine_type, 0,
+          DW_AT_type, DW_FORM_ref4,
+          0, 0,
+    DWARF_ABBREV_FORMAL_PARAMETER2, DW_TAG_formal_parameter, 0,
+          DW_AT_type, DW_FORM_ref4,
+          0, 0,
+  0
+};
+
+static const unsigned char dwarf_line_opcodes[] = {
+    0 ,1 ,1 ,1 ,1 ,0 ,0 ,0 ,1 ,0 ,0 ,1
+};
+
+/* ------------------------------------------------------------------------- */
+/* debug state */
+
+struct _tccdbg {
+
+    int last_line_num, new_file;
+    int section_sym;
+
+    int debug_next_type;
+
+    struct _debug_hash {
+        int debug_type;
+        Sym *type;
+    } *debug_hash;
+
+    struct _debug_anon_hash {
+        Sym *type;
+        int n_debug_type;
+        int *debug_type;
+    } *debug_anon_hash;
+
+    int n_debug_hash;
+    int n_debug_anon_hash;
+
+    struct _debug_info {
+        int start;
+        int end;
+        int n_sym;
+        struct debug_sym {
+            int type;
+            unsigned long value;
+            char *str;
+            Section *sec;
+            int sym_index;
+            int info;
+            int file;
+            int line;
+        } *sym;
+        struct _debug_info *child, *next, *last, *parent;
+    } *debug_info, *debug_info_root;
+
+    struct {
+        int info;
+        int abbrev;
+        int line;
+        int str;
+        int line_str;
+    } dwarf_sym;
+
+    struct {
+        int start;
+        int dir_size;
+        char **dir_table;
+        int filename_size;
+        struct dwarf_filename_struct {
+            int dir_entry;
+            char *name;
+        } *filename_table;
+        int line_size;
+        int line_max_size;
+        unsigned char *line_data;
+        int cur_file;
+        int last_file;
+        int last_pc;
+        int last_line;
+    } dwarf_line;
+
+    struct {
+        int start;
+        Sym *func;
+        int line;
+        int base_type_used[N_DEFAULT_DEBUG];
+    } dwarf_info;
+
+    /* test coverage */
+    struct {
+        unsigned long offset;
+        unsigned long last_file_name;
+        unsigned long last_func_name;
+        int ind;
+        int line;
+    } tcov_data;
+
+};
+
+#define last_line_num       s1->dState->last_line_num
+#define new_file            s1->dState->new_file
+#define section_sym         s1->dState->section_sym
+#define debug_next_type     s1->dState->debug_next_type
+#define debug_hash          s1->dState->debug_hash
+#define debug_anon_hash     s1->dState->debug_anon_hash
+#define n_debug_hash        s1->dState->n_debug_hash
+#define n_debug_anon_hash   s1->dState->n_debug_anon_hash
+#define debug_info          s1->dState->debug_info
+#define debug_info_root     s1->dState->debug_info_root
+#define dwarf_sym           s1->dState->dwarf_sym
+#define dwarf_line          s1->dState->dwarf_line
+#define dwarf_info          s1->dState->dwarf_info
+#define tcov_data           s1->dState->tcov_data
+
+/* ------------------------------------------------------------------------- */
+static void put_stabs(TCCState *s1, const char *str, int type, int other,
+    int desc, unsigned long value);
+
+ST_FUNC void tcc_debug_new(TCCState *s1)
+{
+    int shf = 0;
+    if (!s1->dState)
+        s1->dState = tcc_mallocz(sizeof *s1->dState);
+#ifdef CONFIG_TCC_BACKTRACE
+    /* include stab info with standalone backtrace support */
+    if (s1->do_backtrace
+        && (s1->output_type & (TCC_OUTPUT_EXE | TCC_OUTPUT_DLL)))
+        shf = SHF_ALLOC | SHF_WRITE; // SHF_WRITE needed for musl/SELINUX
+#endif
+    if (s1->dwarf) {
+        s1->dwlo = s1->nb_sections;
+        dwarf_info_section =
+	    new_section(s1, ".debug_info", SHT_PROGBITS, shf);
+        dwarf_abbrev_section =
+	    new_section(s1, ".debug_abbrev", SHT_PROGBITS, shf);
+        dwarf_line_section =
+	    new_section(s1, ".debug_line", SHT_PROGBITS, shf);
+        dwarf_aranges_section =
+	    new_section(s1, ".debug_aranges", SHT_PROGBITS, shf);
+	shf |= SHF_MERGE | SHF_STRINGS;
+        dwarf_str_section =
+	    new_section(s1, ".debug_str", SHT_PROGBITS, shf);
+	dwarf_str_section->sh_entsize = 1;
+	dwarf_info_section->sh_addralign =
+	dwarf_abbrev_section->sh_addralign =
+	dwarf_line_section->sh_addralign =
+	dwarf_aranges_section->sh_addralign =
+	dwarf_str_section->sh_addralign = 1;
+	if (s1->dwarf >= 5) {
+            dwarf_line_str_section =
+	        new_section(s1, ".debug_line_str", SHT_PROGBITS, shf);
+	    dwarf_line_str_section->sh_entsize = 1;
+	    dwarf_line_str_section->sh_addralign = 1;
+	}
+        s1->dwhi = s1->nb_sections;
+    }
+    else
+    {
+        stab_section = new_section(s1, ".stab", SHT_PROGBITS, shf);
+        stab_section->sh_entsize = sizeof(Stab_Sym);
+        stab_section->sh_addralign = sizeof ((Stab_Sym*)0)->n_value;
+        stab_section->link = new_section(s1, ".stabstr", SHT_STRTAB, shf);
+        /* put first entry */
+        put_stabs(s1, "", 0, 0, 0, 0);
+    }
+}
+
+/* put stab debug information */
+static void put_stabs(TCCState *s1, const char *str, int type, int other, int desc,
+                      unsigned long value)
+{
+    Stab_Sym *sym;
+
+    unsigned offset;
+    if (type == N_SLINE
+        && (offset = stab_section->data_offset)
+        && (sym = (Stab_Sym*)(stab_section->data + offset) - 1)
+        && sym->n_type == type
+        && sym->n_value == value) {
+        /* just update line_number in previous entry */
+        sym->n_desc = desc;
+        return;
+    }
+
+    sym = section_ptr_add(stab_section, sizeof(Stab_Sym));
+    if (str) {
+        sym->n_strx = put_elf_str(stab_section->link, str);
+    } else {
+        sym->n_strx = 0;
+    }
+    sym->n_type = type;
+    sym->n_other = other;
+    sym->n_desc = desc;
+    sym->n_value = value;
+}
+
+static void put_stabs_r(TCCState *s1, const char *str, int type, int other, int desc,
+                        unsigned long value, Section *sec, int sym_index)
+{
+    put_elf_reloc(symtab_section, stab_section,
+                  stab_section->data_offset + 8,
+                  sizeof ((Stab_Sym*)0)->n_value == PTR_SIZE ? R_DATA_PTR : R_DATA_32,
+                  sym_index);
+    put_stabs(s1, str, type, other, desc, value);
+}
+
+static void put_stabn(TCCState *s1, int type, int other, int desc, int value)
+{
+    put_stabs(s1, NULL, type, other, desc, value);
+}
+
+/* ------------------------------------------------------------------------- */
+#define	dwarf_data1(s,data) \
+	{ unsigned char *p = section_ptr_add((s), 1); *p = (data); }
+#define	dwarf_data2(s,data) \
+	write16le(section_ptr_add((s), 2), (data))
+#define	dwarf_data4(s,data) \
+	write32le(section_ptr_add((s), 4), (data))
+#define	dwarf_data8(s,data) \
+	write64le(section_ptr_add((s), 8), (data))
+
+static int dwarf_get_section_sym(Section *s)
+{
+    TCCState *s1 = s->s1;
+    return put_elf_sym(symtab_section, 0, 0,
+                       ELFW(ST_INFO)(STB_LOCAL, STT_SECTION), 0,
+                       s->sh_num, NULL);
+}
+
+static void dwarf_reloc(Section *s, int sym, int rel)
+{
+    TCCState *s1 = s->s1;
+    put_elf_reloca(symtab_section, s, s->data_offset, rel, sym, 0);
+}
+
+static void dwarf_string(Section *s, Section *dw, int sym, const char *str)
+{
+    TCCState *s1 = s->s1;
+    int offset, len;
+    char *ptr;
+
+    len = strlen(str) + 1;
+    offset = dw->data_offset;
+    ptr = section_ptr_add(dw, len);
+    memmove(ptr, str, len);
+    put_elf_reloca(symtab_section, s, s->data_offset, R_DATA_32DW, sym,
+                   PTR_SIZE == 4 ? 0 : offset);
+    dwarf_data4(s, PTR_SIZE == 4 ? offset : 0);
+}
+
+static void dwarf_strp(Section *s, const char *str)
+{
+    TCCState *s1 = s->s1;
+    dwarf_string(s, dwarf_str_section, dwarf_sym.str, str);
+}
+
+static void dwarf_line_strp(Section *s, const char *str)
+{
+    TCCState *s1 = s->s1;
+    dwarf_string(s, dwarf_line_str_section, dwarf_sym.line_str, str);
+}
+
+static void dwarf_line_op(TCCState *s1, unsigned char op)
+{
+    if (dwarf_line.line_size >= dwarf_line.line_max_size) {
+	dwarf_line.line_max_size += 1024;
+	dwarf_line.line_data =
+	    (unsigned char *)tcc_realloc(dwarf_line.line_data,
+					 dwarf_line.line_max_size);
+    }
+    dwarf_line.line_data[dwarf_line.line_size++] = op;
+}
+
+static void dwarf_file(TCCState *s1)
+{
+    int i, j;
+    char *filename;
+    int index_offset = s1->dwarf < 5;
+
+    if (!strcmp(file->filename, "<command line>")) {
+        dwarf_line.cur_file = 1;
+	return;
+    }
+    filename = strrchr(file->filename, '/');
+    if (filename == NULL) {
+        for (i = 1; i < dwarf_line.filename_size; i++)
+            if (dwarf_line.filename_table[i].dir_entry == 0 &&
+		strcmp(dwarf_line.filename_table[i].name,
+		       file->filename) == 0) {
+		    dwarf_line.cur_file = i + index_offset;
+	            return;
+		}
+	i = -index_offset;
+	filename = file->filename;
+    }
+    else {
+	char *undo = filename;
+	char *dir = file->filename;
+
+	*filename++ = '\0';
+        for (i = 0; i < dwarf_line.dir_size; i++)
+	    if (strcmp(dwarf_line.dir_table[i], dir) == 0) {
+		for (j = 1; j < dwarf_line.filename_size; j++)
+		    if (dwarf_line.filename_table[j].dir_entry - index_offset
+			== i &&
+			strcmp(dwarf_line.filename_table[j].name,
+			       filename) == 0) {
+			*undo = '/';
+		        dwarf_line.cur_file = j + index_offset;
+			return;
+		    }
+		break;
+	    }
+	if (i == dwarf_line.dir_size) {
+	    dwarf_line.dir_size++;
+	    dwarf_line.dir_table = 
+                (char **) tcc_realloc(dwarf_line.dir_table,
+                                      dwarf_line.dir_size *
+                                      sizeof (char *));
+            dwarf_line.dir_table[i] = tcc_strdup(dir);
+	}
+	*undo = '/';
+    }
+    dwarf_line.filename_table =
+        (struct dwarf_filename_struct *)
+        tcc_realloc(dwarf_line.filename_table,
+                    (dwarf_line.filename_size + 1) *
+                    sizeof (struct dwarf_filename_struct));
+    dwarf_line.filename_table[dwarf_line.filename_size].dir_entry =
+	i + index_offset;
+    dwarf_line.filename_table[dwarf_line.filename_size].name =
+        tcc_strdup(filename);
+    dwarf_line.cur_file = dwarf_line.filename_size++ + index_offset;
+    return;
+}
+
+#if 0
+static int dwarf_uleb128_size (unsigned long long value)
+{
+    int size =  0;
+
+    do {
+        value >>= 7;
+        size++;
+    } while (value != 0);
+    return size;
+}
+#endif
+
+static int dwarf_sleb128_size (long long value)
+{
+    int size =  0;
+    long long end = value >> 63;
+    unsigned char last = end & 0x40;
+    unsigned char byte;
+
+    do {
+        byte = value & 0x7f;
+        value >>= 7;
+        size++;
+    } while (value != end || (byte & 0x40) != last);
+    return size;
+}
+
+static void dwarf_uleb128 (Section *s, unsigned long long value)
+{
+    do {
+        unsigned char byte = value & 0x7f;
+
+        value >>= 7;
+        dwarf_data1(s, byte | (value ? 0x80 : 0));
+    } while (value != 0);
+}
+
+static void dwarf_sleb128 (Section *s, long long value)
+{
+    int more;
+    long long end = value >> 63;
+    unsigned char last = end & 0x40;
+
+    do {
+        unsigned char byte = value & 0x7f;
+
+        value >>= 7;
+	more = value != end || (byte & 0x40) != last;
+        dwarf_data1(s, byte | (0x80 * more));
+    } while (more);
+}
+
+static void dwarf_uleb128_op (TCCState *s1, unsigned long long value)
+{
+    do {
+        unsigned char byte = value & 0x7f;
+
+        value >>= 7;
+        dwarf_line_op(s1, byte | (value ? 0x80 : 0));
+    } while (value != 0);
+}
+
+static void dwarf_sleb128_op (TCCState *s1, long long value)
+{
+    int more;
+    long long end = value >> 63;
+    unsigned char last = end & 0x40;
+
+    do {
+        unsigned char byte = value & 0x7f;
+
+        value >>= 7;
+        more = value != end || (byte & 0x40) != last;
+        dwarf_line_op(s1, byte | (0x80 * more));
+    } while (more);
+}
+
+/* start of translation unit info */
+ST_FUNC void tcc_debug_start(TCCState *s1)
+{
+    int i;
+    char buf[512];
+    char *filename;
+
+    /* an elf symbol of type STT_FILE must be put so that STB_LOCAL
+       symbols can be safely used */
+    filename = file->prev ? file->prev->filename : file->filename;
+    put_elf_sym(symtab_section, 0, 0,
+                ELFW(ST_INFO)(STB_LOCAL, STT_FILE), 0,
+                SHN_ABS, filename);
+
+    if (s1->do_debug) {
+
+        new_file = last_line_num = 0;
+        debug_next_type = N_DEFAULT_DEBUG;
+        debug_hash = NULL;
+        debug_anon_hash = NULL;
+        n_debug_hash = 0;
+        n_debug_anon_hash = 0;
+
+        getcwd(buf, sizeof(buf));
+#ifdef _WIN32
+        normalize_slashes(buf);
+#endif
+
+        if (s1->dwarf) {
+            int start_abbrev;
+            unsigned char *ptr;
+	    char *undo;
+
+            /* dwarf_abbrev */
+            start_abbrev = dwarf_abbrev_section->data_offset;
+            ptr = section_ptr_add(dwarf_abbrev_section, sizeof(dwarf_abbrev_init));
+            memcpy(ptr, dwarf_abbrev_init, sizeof(dwarf_abbrev_init));
+
+            if (s1->dwarf < 5) {
+    	        while (*ptr) {
+    	            ptr += 3;
+    	            while (*ptr) {
+    	                if (ptr[1] == DW_FORM_line_strp)
+    		            ptr[1] = DW_FORM_strp;
+		        if (s1->dwarf < 4) {
+			    /* These are compatable for DW_TAG_compile_unit
+			       DW_AT_stmt_list. */
+			    if  (ptr[1] == DW_FORM_sec_offset)
+			         ptr[1] = DW_FORM_data4;
+			    /* This code uses only size < 0x80 so these are
+			       compatible. */
+			    if  (ptr[1] == DW_FORM_exprloc)
+			         ptr[1] = DW_FORM_block1;
+			}
+    	                ptr += 2;
+    	            }
+		    ptr += 2;
+    	        }
+            }
+
+            dwarf_sym.info = dwarf_get_section_sym(dwarf_info_section);
+            dwarf_sym.abbrev = dwarf_get_section_sym(dwarf_abbrev_section);
+            dwarf_sym.line = dwarf_get_section_sym(dwarf_line_section);
+            dwarf_sym.str = dwarf_get_section_sym(dwarf_str_section);
+            if (tcc_state->dwarf >= 5)
+    	        dwarf_sym.line_str = dwarf_get_section_sym(dwarf_line_str_section);
+            else {
+    	        dwarf_line_str_section = dwarf_str_section;
+                dwarf_sym.line_str = dwarf_sym.str;
+            }
+            section_sym = dwarf_get_section_sym(text_section);
+
+            /* dwarf_info */
+            dwarf_info.start = dwarf_info_section->data_offset;
+            dwarf_data4(dwarf_info_section, 0); // size
+            dwarf_data2(dwarf_info_section, s1->dwarf); // version
+            if (s1->dwarf >= 5) {
+                dwarf_data1(dwarf_info_section, DW_UT_compile); // unit type
+                dwarf_data1(dwarf_info_section, PTR_SIZE);
+                dwarf_reloc(dwarf_info_section, dwarf_sym.abbrev, R_DATA_32DW);
+                dwarf_data4(dwarf_info_section, start_abbrev);
+            }
+            else {
+                dwarf_reloc(dwarf_info_section, dwarf_sym.abbrev, R_DATA_32DW);
+                dwarf_data4(dwarf_info_section, start_abbrev);
+                dwarf_data1(dwarf_info_section, PTR_SIZE);
+            }
+
+            dwarf_data1(dwarf_info_section, DWARF_ABBREV_COMPILE_UNIT);
+            dwarf_strp(dwarf_info_section, "tcc " TCC_VERSION);
+            dwarf_data1(dwarf_info_section, DW_LANG_C11);
+            dwarf_line_strp(dwarf_info_section, filename);
+            dwarf_line_strp(dwarf_info_section, buf);
+            dwarf_reloc(dwarf_info_section, section_sym, R_DATA_PTR);
+#if PTR_SIZE == 4
+            dwarf_data4(dwarf_info_section, ind); // low pc
+            dwarf_data4(dwarf_info_section, 0); // high pc
+#else
+            dwarf_data8(dwarf_info_section, ind); // low pc
+            dwarf_data8(dwarf_info_section, 0); // high pc
+#endif
+            dwarf_reloc(dwarf_info_section, dwarf_sym.line, R_DATA_32DW);
+            dwarf_data4(dwarf_info_section, dwarf_line_section->data_offset); // stmt_list
+
+            /* dwarf_line */
+            dwarf_line.start = dwarf_line_section->data_offset;
+            dwarf_data4(dwarf_line_section, 0); // length
+            dwarf_data2(dwarf_line_section, s1->dwarf); // version
+            if (s1->dwarf >= 5) {
+                dwarf_data1(dwarf_line_section, PTR_SIZE); // address size
+                dwarf_data1(dwarf_line_section, 0); // segment selector
+            }
+            dwarf_data4(dwarf_line_section, 0); // prologue Length
+            dwarf_data1(dwarf_line_section, DWARF_MIN_INSTR_LEN);
+            if (s1->dwarf >= 4)
+                dwarf_data1(dwarf_line_section, 1); // maximum ops per instruction
+            dwarf_data1(dwarf_line_section, 1); // Initial value of 'is_stmt'
+            dwarf_data1(dwarf_line_section, DWARF_LINE_BASE);
+            dwarf_data1(dwarf_line_section, DWARF_LINE_RANGE);
+            dwarf_data1(dwarf_line_section, DWARF_OPCODE_BASE);
+            ptr = section_ptr_add(dwarf_line_section, sizeof(dwarf_line_opcodes));
+            memcpy(ptr, dwarf_line_opcodes, sizeof(dwarf_line_opcodes));
+	    undo = strrchr(filename, '/');
+	    if (undo)
+		*undo = 0;
+            dwarf_line.dir_size = 1 + (undo != NULL);
+            dwarf_line.dir_table = (char **) tcc_malloc(sizeof (char *) *
+							dwarf_line.dir_size);
+            dwarf_line.dir_table[0] = tcc_strdup(buf);
+	    if (undo)
+                dwarf_line.dir_table[1] = tcc_strdup(filename);
+            dwarf_line.filename_size = 2;
+            dwarf_line.filename_table =
+    	        (struct dwarf_filename_struct *)
+    	        tcc_malloc(2*sizeof (struct dwarf_filename_struct));
+            dwarf_line.filename_table[0].dir_entry = 0;
+	    if (undo) {
+                dwarf_line.filename_table[0].name = tcc_strdup(undo + 1);
+                dwarf_line.filename_table[1].dir_entry = 1;
+                dwarf_line.filename_table[1].name = tcc_strdup(undo + 1);
+		*undo = '/';
+	    }
+	    else {
+                dwarf_line.filename_table[0].name = tcc_strdup(filename);
+                dwarf_line.filename_table[1].dir_entry = 0;
+                dwarf_line.filename_table[1].name = tcc_strdup(filename);
+	    }
+            dwarf_line.line_size = dwarf_line.line_max_size = 0;
+            dwarf_line.line_data = NULL;
+            dwarf_line.cur_file = 1;
+            dwarf_line.last_file = 0;
+            dwarf_line.last_pc = 0;
+            dwarf_line.last_line = 1;
+            dwarf_line_op(s1, 0); // extended
+            dwarf_uleb128_op(s1, 1 + PTR_SIZE); // extended size
+            dwarf_line_op(s1, DW_LNE_set_address);
+            for (i = 0; i < PTR_SIZE; i++)
+    	        dwarf_line_op(s1, 0);
+            memset(&dwarf_info.base_type_used, 0, sizeof(dwarf_info.base_type_used));
+        }
+        else
+        {
+            /* file info: full path + filename */
+            pstrcat(buf, sizeof(buf), "/");
+            section_sym = put_elf_sym(symtab_section, 0, 0,
+                                      ELFW(ST_INFO)(STB_LOCAL, STT_SECTION), 0,
+                                      text_section->sh_num, NULL);
+            put_stabs_r(s1, buf, N_SO, 0, 0,
+                        text_section->data_offset, text_section, section_sym);
+            put_stabs_r(s1, filename, N_SO, 0, 0,
+                        text_section->data_offset, text_section, section_sym);
+            for (i = 0; i < N_DEFAULT_DEBUG; i++)
+                put_stabs(s1, default_debug[i].name, N_LSYM, 0, 0, 0);
+        }
+        /* we're currently 'including' the <command line> */
+        tcc_debug_bincl(s1);
+    }
+}
+
+/* put end of translation unit info */
+ST_FUNC void tcc_debug_end(TCCState *s1)
+{
+    if (!s1->do_debug || debug_next_type == 0)
+        return;
+
+    if (debug_info_root)
+        tcc_debug_funcend(s1, 0); /* free stuff in case of errors */
+
+    if (s1->dwarf) {
+	int i, j;
+	int start_aranges;
+	unsigned char *ptr;
+	int text_size = text_section->data_offset;
+
+	/* dwarf_info */
+	for (i = 0; i < n_debug_anon_hash; i++) {
+	    Sym *t = debug_anon_hash[i].type;
+	    int pos = dwarf_info_section->data_offset;
+
+	    dwarf_data1(dwarf_info_section,
+                        IS_UNION (t->type.t) ? DWARF_ABBREV_UNION_EMPTY_TYPE
+                                             : DWARF_ABBREV_STRUCTURE_EMPTY_TYPE);
+            dwarf_strp(dwarf_info_section,
+                       (t->v & ~SYM_STRUCT) >= SYM_FIRST_ANOM
+                       ? "" : get_tok_str(t->v & ~SYM_STRUCT, NULL));
+            dwarf_uleb128(dwarf_info_section, 0);
+            dwarf_uleb128(dwarf_info_section, dwarf_line.cur_file);
+            dwarf_uleb128(dwarf_info_section, file->line_num);
+	    for (j = 0; j < debug_anon_hash[i].n_debug_type; j++)
+		write32le(dwarf_info_section->data +
+			  debug_anon_hash[i].debug_type[j],
+			  pos - dwarf_info.start);
+	    tcc_free (debug_anon_hash[i].debug_type);
+	}
+	tcc_free (debug_anon_hash);
+	dwarf_data1(dwarf_info_section, 0);
+	ptr = dwarf_info_section->data + dwarf_info.start;
+	write32le(ptr, dwarf_info_section->data_offset - dwarf_info.start - 4);
+	write32le(ptr + 25 + (s1->dwarf >= 5) + PTR_SIZE, text_size);
+
+	/* dwarf_aranges */
+	start_aranges = dwarf_aranges_section->data_offset;
+	dwarf_data4(dwarf_aranges_section, 0); // size
+	dwarf_data2(dwarf_aranges_section, 2); // version
+	dwarf_reloc(dwarf_aranges_section, dwarf_sym.info, R_DATA_32DW);
+	dwarf_data4(dwarf_aranges_section, 0); // dwarf_info
+#if PTR_SIZE == 4
+	dwarf_data1(dwarf_aranges_section, 4); // address size
+#else
+	dwarf_data1(dwarf_aranges_section, 8); // address size
+#endif
+	dwarf_data1(dwarf_aranges_section, 0); // segment selector size
+	dwarf_data4(dwarf_aranges_section, 0); // padding
+	dwarf_reloc(dwarf_aranges_section, section_sym, R_DATA_PTR);
+#if PTR_SIZE == 4
+	dwarf_data4(dwarf_aranges_section, 0); // Begin
+	dwarf_data4(dwarf_aranges_section, text_size); // End
+	dwarf_data4(dwarf_aranges_section, 0); // End list
+	dwarf_data4(dwarf_aranges_section, 0); // End list
+#else
+	dwarf_data8(dwarf_aranges_section, 0); // Begin
+	dwarf_data8(dwarf_aranges_section, text_size); // End
+	dwarf_data8(dwarf_aranges_section, 0); // End list
+	dwarf_data8(dwarf_aranges_section, 0); // End list
+#endif
+	ptr = dwarf_aranges_section->data + start_aranges;
+	write32le(ptr, dwarf_aranges_section->data_offset - start_aranges - 4);
+
+	/* dwarf_line */
+	if (s1->dwarf >= 5) {
+	    dwarf_data1(dwarf_line_section, 1); /* col */
+	    dwarf_uleb128(dwarf_line_section, DW_LNCT_path);
+	    dwarf_uleb128(dwarf_line_section, DW_FORM_line_strp);
+	    dwarf_uleb128(dwarf_line_section, dwarf_line.dir_size);
+	    for (i = 0; i < dwarf_line.dir_size; i++)
+	        dwarf_line_strp(dwarf_line_section, dwarf_line.dir_table[i]);
+	    dwarf_data1(dwarf_line_section, 2); /* col */
+	    dwarf_uleb128(dwarf_line_section, DW_LNCT_path);
+	    dwarf_uleb128(dwarf_line_section, DW_FORM_line_strp);
+	    dwarf_uleb128(dwarf_line_section, DW_LNCT_directory_index);
+	    dwarf_uleb128(dwarf_line_section, DW_FORM_udata);
+	    dwarf_uleb128(dwarf_line_section, dwarf_line.filename_size);
+	    for (i = 0; i < dwarf_line.filename_size; i++) {
+	        dwarf_line_strp(dwarf_line_section,
+				dwarf_line.filename_table[i].name);
+	        dwarf_uleb128(dwarf_line_section,
+			      dwarf_line.filename_table[i].dir_entry);
+	    }
+	}
+	else {
+	    int len;
+
+	    for (i = 0; i < dwarf_line.dir_size; i++) {
+	        len = strlen(dwarf_line.dir_table[i]) + 1;
+	        ptr = section_ptr_add(dwarf_line_section, len);
+	        memmove(ptr, dwarf_line.dir_table[i], len);
+	    }
+	    dwarf_data1(dwarf_line_section, 0); /* end dir */
+	    for (i = 0; i < dwarf_line.filename_size; i++) {
+	        len = strlen(dwarf_line.filename_table[i].name) + 1;
+	        ptr = section_ptr_add(dwarf_line_section, len);
+	        memmove(ptr, dwarf_line.filename_table[i].name, len);
+	        dwarf_uleb128(dwarf_line_section,
+			      dwarf_line.filename_table[i].dir_entry);
+	        dwarf_uleb128(dwarf_line_section, 0); /* time */
+	        dwarf_uleb128(dwarf_line_section, 0); /* size */
+	    }
+	    dwarf_data1(dwarf_line_section, 0); /* end file */
+	}
+	for (i = 0; i < dwarf_line.dir_size; i++)
+	    tcc_free(dwarf_line.dir_table[i]);
+	tcc_free(dwarf_line.dir_table);
+	for (i = 0; i < dwarf_line.filename_size; i++)
+	    tcc_free(dwarf_line.filename_table[i].name);
+	tcc_free(dwarf_line.filename_table);
+
+	dwarf_line_op(s1, 0); // extended
+	dwarf_uleb128_op(s1, 1); // extended size
+	dwarf_line_op(s1, DW_LNE_end_sequence);
+	i = (s1->dwarf >= 5) * 2;
+	write32le(&dwarf_line_section->data[dwarf_line.start + 6 + i],
+		  dwarf_line_section->data_offset - dwarf_line.start - (10 + i));
+	section_ptr_add(dwarf_line_section, 3);
+	dwarf_reloc(dwarf_line_section, section_sym, R_DATA_PTR);
+	ptr = section_ptr_add(dwarf_line_section, dwarf_line.line_size - 3);
+	memmove(ptr - 3, dwarf_line.line_data, dwarf_line.line_size);
+	tcc_free(dwarf_line.line_data);
+	write32le(dwarf_line_section->data + dwarf_line.start,
+		  dwarf_line_section->data_offset - dwarf_line.start - 4);
+    }
+    else
+    {
+        put_stabs_r(s1, NULL, N_SO, 0, 0,
+                    text_section->data_offset, text_section, section_sym);
+    }
+    tcc_free(debug_hash);
+    debug_next_type = 0;
+}
+
+static BufferedFile* put_new_file(TCCState *s1)
+{
+    BufferedFile *f = file;
+    /* use upper file if from inline ":asm:" */
+    if (f->filename[0] == ':')
+        f = f->prev;
+    if (f && new_file) {
+        new_file = last_line_num = 0;
+        if (s1->dwarf)
+            dwarf_file(s1);
+        else
+            put_stabs_r(s1, f->filename, N_SOL, 0, 0, ind, text_section, section_sym);
+    }
+    return f;
+}
+
+/* put alternative filename */
+ST_FUNC void tcc_debug_putfile(TCCState *s1, const char *filename)
+{
+    if (0 == strcmp(file->filename, filename))
+        return;
+    pstrcpy(file->filename, sizeof(file->filename), filename);
+    if (!s1->do_debug)
+        return;
+    if (s1->dwarf)
+        dwarf_file(s1);
+    new_file = 1;
+}
+
+/* begin of #include */
+ST_FUNC void tcc_debug_bincl(TCCState *s1)
+{
+    if (!s1->do_debug)
+        return;
+    if (s1->dwarf)
+        dwarf_file(s1);
+    else
+        put_stabs(s1, file->filename, N_BINCL, 0, 0, 0);
+    new_file = 1;
+}
+
+/* end of #include */
+ST_FUNC void tcc_debug_eincl(TCCState *s1)
+{
+    if (!s1->do_debug)
+        return;
+    if (s1->dwarf)
+        dwarf_file(s1);
+    else
+        put_stabn(s1, N_EINCL, 0, 0, 0);
+    new_file = 1;
+}
+
+/* generate line number info */
+ST_FUNC void tcc_debug_line(TCCState *s1)
+{
+    BufferedFile *f;
+
+    if (!s1->do_debug)
+        return;
+    if (cur_text_section != text_section)
+        return;
+    f = put_new_file(s1);
+    if (!f)
+        return;
+    if (last_line_num == f->line_num)
+        return;
+    last_line_num = f->line_num;
+
+    if (s1->dwarf) {
+	int len_pc = (ind - dwarf_line.last_pc) / DWARF_MIN_INSTR_LEN;
+	int len_line = f->line_num - dwarf_line.last_line;
+	int n = len_pc * DWARF_LINE_RANGE + len_line + DWARF_OPCODE_BASE - DWARF_LINE_BASE;
+
+	if (dwarf_line.cur_file != dwarf_line.last_file) {
+	    dwarf_line.last_file = dwarf_line.cur_file;
+	    dwarf_line_op(s1, DW_LNS_set_file);
+	    dwarf_uleb128_op(s1, dwarf_line.cur_file);
+	}
+	if (len_pc &&
+	    len_line >= DWARF_LINE_BASE && len_line <= (DWARF_OPCODE_BASE + DWARF_LINE_BASE) &&
+	    n >= DWARF_OPCODE_BASE && n <= 255)
+            dwarf_line_op(s1, n);
+	else {
+	    if (len_pc) {
+	        n = len_pc * DWARF_LINE_RANGE + 0 + DWARF_OPCODE_BASE - DWARF_LINE_BASE;
+	        if (n >= DWARF_OPCODE_BASE && n <= 255)
+                    dwarf_line_op(s1, n);
+		else {
+	            dwarf_line_op(s1, DW_LNS_advance_pc);
+		    dwarf_uleb128_op(s1, len_pc);
+		}
+	    }
+	    if (len_line) {
+	        n = 0 * DWARF_LINE_RANGE + len_line + DWARF_OPCODE_BASE - DWARF_LINE_BASE;
+	        if (len_line >= DWARF_LINE_BASE && len_line <= (DWARF_OPCODE_BASE + DWARF_LINE_BASE) &&
+		    n >= DWARF_OPCODE_BASE && n <= 255)
+	            dwarf_line_op(s1, n);
+		else {
+	            dwarf_line_op(s1, DW_LNS_advance_line);
+		    dwarf_sleb128_op(s1, len_line);
+		}
+	    }
+	}
+	dwarf_line.last_pc = ind;
+	dwarf_line.last_line = f->line_num;
+    }
+    else
+    {
+	if (func_ind != -1) {
+            put_stabn(s1, N_SLINE, 0, f->line_num, ind - func_ind);
+        } else {
+            /* from tcc_assemble */
+            put_stabs_r(s1, NULL, N_SLINE, 0, f->line_num, ind, text_section, section_sym);
+        }
+    }
+}
+
+static void tcc_debug_stabs (TCCState *s1, const char *str, int type, unsigned long value,
+                             Section *sec, int sym_index, int info)
+{
+    struct debug_sym *s;
+
+    if (debug_info) {
+        debug_info->sym =
+            (struct debug_sym *)tcc_realloc (debug_info->sym,
+                                             sizeof(struct debug_sym) *
+                                             (debug_info->n_sym + 1));
+        s = debug_info->sym + debug_info->n_sym++;
+        s->type = type;
+        s->value = value;
+        s->str = tcc_strdup(str);
+        s->sec = sec;
+        s->sym_index = sym_index;
+        s->info = info;
+        s->file = dwarf_line.cur_file;
+        s->line = file->line_num;
+    }
+    else if (sec)
+        put_stabs_r (s1, str, type, 0, 0, value, sec, sym_index);
+    else
+        put_stabs (s1, str, type, 0, 0, value);
+}
+
+ST_FUNC void tcc_debug_stabn(TCCState *s1, int type, int value)
+{
+    if (!s1->do_debug)
+        return;
+    if (type == N_LBRAC) {
+        struct _debug_info *info =
+            (struct _debug_info *) tcc_mallocz(sizeof (*info));
+
+        info->start = value;
+        info->parent = debug_info;
+        if (debug_info) {
+            if (debug_info->child) {
+                if (debug_info->child->last)
+                    debug_info->child->last->next = info;
+                else
+                    debug_info->child->next = info;
+                debug_info->child->last = info;
+            }
+            else
+                debug_info->child = info;
+        }
+        else
+            debug_info_root = info;
+        debug_info = info;
+    }
+    else {
+        debug_info->end = value;
+        debug_info = debug_info->parent;
+    }
+}
+
+static int tcc_debug_find(TCCState *s1, Sym *t, int dwarf)
+{
+    int i;
+
+    if (!debug_info && dwarf &&
+	(t->type.t & VT_BTYPE) == VT_STRUCT && t->c == -1) {
+	for (i = 0; i < n_debug_anon_hash; i++)
+            if (t == debug_anon_hash[i].type)
+		return 0;
+	debug_anon_hash = (struct _debug_anon_hash *)
+            tcc_realloc (debug_anon_hash,
+                         (n_debug_anon_hash + 1) * sizeof(*debug_anon_hash));
+        debug_anon_hash[n_debug_anon_hash].n_debug_type = 0;
+        debug_anon_hash[n_debug_anon_hash].debug_type = NULL;
+        debug_anon_hash[n_debug_anon_hash++].type = t;
+	return 0;
+    }
+    for (i = 0; i < n_debug_hash; i++)
+        if (t == debug_hash[i].type)
+	    return debug_hash[i].debug_type;
+    return -1;
+}
+
+static int tcc_get_dwarf_info(TCCState *s1, Sym *s);
+
+static void tcc_debug_check_anon(TCCState *s1, Sym *t, int debug_type)
+{
+    int i;
+
+    if (!debug_info && (t->type.t & VT_BTYPE) == VT_STRUCT && t->type.ref->c == -1)
+	for (i = 0; i < n_debug_anon_hash; i++)
+            if (t->type.ref == debug_anon_hash[i].type) {
+		debug_anon_hash[i].debug_type =
+		    tcc_realloc(debug_anon_hash[i].debug_type,
+				(debug_anon_hash[i].n_debug_type + 1) * sizeof(int));
+		debug_anon_hash[i].debug_type[debug_anon_hash[i].n_debug_type++] =
+		    debug_type;
+            }
+}
+
+ST_FUNC void tcc_debug_fix_anon(TCCState *s1, CType *t)
+{
+    int i, j, debug_type;
+
+    if (!s1->do_debug || !s1->dwarf || debug_info)
+	return;
+    if ((t->t & VT_BTYPE) == VT_STRUCT && t->ref->c != -1)
+	for (i = 0; i < n_debug_anon_hash; i++)
+	    if (t->ref == debug_anon_hash[i].type) {
+		Sym sym = {0}; sym .type = *t ;
+
+		/* Trick to not hash this struct */
+		debug_info = (struct _debug_info *) t;
+		debug_type = tcc_get_dwarf_info(s1, &sym);
+		debug_info = NULL;
+		for (j = 0; j < debug_anon_hash[i].n_debug_type; j++)
+		    write32le(dwarf_info_section->data +
+			      debug_anon_hash[i].debug_type[j],
+			      debug_type - dwarf_info.start);
+		tcc_free(debug_anon_hash[i].debug_type);
+		n_debug_anon_hash--;
+		for (; i < n_debug_anon_hash; i++)
+		    debug_anon_hash[i] = debug_anon_hash[i + 1];
+	    }
+}
+
+static int tcc_debug_add(TCCState *s1, Sym *t, int dwarf)
+{
+    int offset = dwarf ? dwarf_info_section->data_offset : ++debug_next_type;
+    debug_hash = (struct _debug_hash *)
+	tcc_realloc (debug_hash,
+		     (n_debug_hash + 1) * sizeof(*debug_hash));
+    debug_hash[n_debug_hash].debug_type = offset;
+    debug_hash[n_debug_hash++].type = t;
+    return offset;
+}
+
+static void tcc_debug_remove(TCCState *s1, Sym *t)
+{
+    int i;
+
+    for (i = 0; i < n_debug_hash; i++)
+        if (t == debug_hash[i].type) {
+	    n_debug_hash--;
+	    for (; i < n_debug_hash; i++)
+		debug_hash[i] = debug_hash[i+1];
+	}
+}
+
+#define	STRUCT_NODEBUG(s) 			       \
+    (s->a.nodebug ||                           \
+     ((s->v & ~SYM_FIELD) >= SYM_FIRST_ANOM && \
+      ((s->type.t & VT_BTYPE) == VT_BYTE ||    \
+       (s->type.t & VT_BTYPE) == VT_BOOL ||    \
+       (s->type.t & VT_BTYPE) == VT_SHORT ||   \
+       (s->type.t & VT_BTYPE) == VT_INT ||     \
+       (s->type.t & VT_BTYPE) == VT_LLONG)))
+
+static void tcc_get_debug_info(TCCState *s1, Sym *s, CString *result)
+{
+    int type;
+    int n = 0;
+    int debug_type = -1;
+    Sym *t = s;
+    CString str;
+
+    for (;;) {
+        type = t->type.t & ~(VT_STORAGE | VT_CONSTANT | VT_VOLATILE | VT_VLA);
+        if ((type & VT_BTYPE) != VT_BYTE)
+            type &= ~VT_DEFSIGN;
+        if (type == VT_PTR || type == (VT_PTR | VT_ARRAY))
+            n++, t = t->type.ref;
+        else
+            break;
+    }
+    if ((type & VT_BTYPE) == VT_STRUCT) {
+	Sym *e = t;
+
+        t = t->type.ref;
+	debug_type = tcc_debug_find(s1, t, 0);
+        if (debug_type == -1) {
+            debug_type = tcc_debug_add(s1, t, 0);
+            cstr_new (&str);
+            cstr_printf (&str, "%s:T%d=%c%d",
+                         (t->v & ~SYM_STRUCT) >= SYM_FIRST_ANOM
+                         ? "" : get_tok_str(t->v & ~SYM_STRUCT, NULL),
+                         debug_type,
+                         IS_UNION (t->type.t) ? 'u' : 's',
+                         t->c);
+            while (t->next) {
+                int pos, size, align;
+
+                t = t->next;
+		if (STRUCT_NODEBUG(t))
+		    continue;
+                cstr_printf (&str, "%s:",
+                             get_tok_str(t->v & ~SYM_FIELD, NULL));
+                tcc_get_debug_info (s1, t, &str);
+                if (t->type.t & VT_BITFIELD) {
+                    pos = t->c * 8 + BIT_POS(t->type.t);
+                    size = BIT_SIZE(t->type.t);
+                }
+                else {
+                    pos = t->c * 8;
+                    size = type_size(&t->type, &align) * 8;
+                }
+                cstr_printf (&str, ",%d,%d;", pos, size);
+            }
+            cstr_printf (&str, ";");
+            tcc_debug_stabs(s1, str.data, N_LSYM, 0, NULL, 0, 0);
+            cstr_free (&str);
+            if (debug_info)
+                tcc_debug_remove(s1, e);
+        }
+    }
+    else if (IS_ENUM(type)) {
+        Sym *e = t = t->type.ref;
+
+	debug_type = tcc_debug_find(s1, t, 0);
+	if (debug_type == -1) {
+	    debug_type = tcc_debug_add(s1, t, 0);
+            cstr_new (&str);
+            cstr_printf (&str, "%s:T%d=e",
+                         (t->v & ~SYM_STRUCT) >= SYM_FIRST_ANOM
+                         ? "" : get_tok_str(t->v & ~SYM_STRUCT, NULL),
+                         debug_type);
+            while (t->next) {
+                t = t->next;
+                cstr_printf (&str, "%s:",
+                             (t->v & ~SYM_FIELD) >= SYM_FIRST_ANOM
+                             ? "" : get_tok_str(t->v & ~SYM_FIELD, NULL));
+                cstr_printf (&str, e->type.t & VT_UNSIGNED ? "%u," : "%d,",
+                             (int)t->enum_val);
+            }
+            cstr_printf (&str, ";");
+            tcc_debug_stabs(s1, str.data, N_LSYM, 0, NULL, 0, 0);
+            cstr_free (&str);
+            if (debug_info)
+                tcc_debug_remove(s1, e);
+	}
+    }
+    else if ((type & VT_BTYPE) != VT_FUNC) {
+        type &= ~VT_STRUCT_MASK;
+        for (debug_type = 1; debug_type <= N_DEFAULT_DEBUG; debug_type++)
+            if (default_debug[debug_type - 1].type == type)
+                break;
+        if (debug_type > N_DEFAULT_DEBUG)
+            return;
+    }
+    if (n > 0)
+        cstr_printf (result, "%d=", ++debug_next_type);
+    t = s;
+    for (;;) {
+        type = t->type.t & ~(VT_STORAGE | VT_CONSTANT | VT_VOLATILE | VT_VLA);
+        if ((type & VT_BTYPE) != VT_BYTE)
+            type &= ~VT_DEFSIGN;
+        if (type == VT_PTR)
+            cstr_printf (result, "%d=*", ++debug_next_type);
+        else if (type == (VT_PTR | VT_ARRAY))
+            cstr_printf (result, "%d=ar1;0;%d;",
+                         ++debug_next_type, t->type.ref->c - 1);
+        else if (type == VT_FUNC) {
+            cstr_printf (result, "%d=f", ++debug_next_type);
+            tcc_get_debug_info (s1, t->type.ref, result);
+            return;
+        }
+        else
+            break;
+        t = t->type.ref;
+    }
+    cstr_printf (result, "%d", debug_type);
+}
+
+static int tcc_get_dwarf_info(TCCState *s1, Sym *s)
+{
+    int type;
+    int debug_type = -1;
+    Sym *e, *t = s;
+    int i;
+    int last_pos = -1;
+    int retval;
+
+    if (new_file)
+        put_new_file(s1);
+    for (;;) {
+        type = t->type.t & ~(VT_STORAGE | VT_CONSTANT | VT_VOLATILE | VT_VLA);
+        if ((type & VT_BTYPE) != VT_BYTE)
+            type &= ~VT_DEFSIGN;
+        if (type == VT_PTR || type == (VT_PTR | VT_ARRAY))
+            t = t->type.ref;
+        else
+            break;
+    }
+    if ((type & VT_BTYPE) == VT_STRUCT) {
+        t = t->type.ref;
+	debug_type = tcc_debug_find(s1, t, 1);
+	if (debug_type == -1) {
+	    int pos_sib = 0, i, *pos_type;
+
+	    debug_type = tcc_debug_add(s1, t, 1);
+	    e = t;
+	    i = 0;
+	    while (e->next) {
+		e = e->next;
+		if (STRUCT_NODEBUG(e))
+		    continue;
+		i++;
+	    }
+	    pos_type = (int *) tcc_malloc(i * sizeof(int));
+	    dwarf_data1(dwarf_info_section,
+			IS_UNION (t->type.t)
+		        ? t->next ? DWARF_ABBREV_UNION_TYPE
+				  : DWARF_ABBREV_UNION_EMPTY_TYPE
+		        : t->next ? DWARF_ABBREV_STRUCTURE_TYPE
+				  : DWARF_ABBREV_STRUCTURE_EMPTY_TYPE);
+	    dwarf_strp(dwarf_info_section,
+                       (t->v & ~SYM_STRUCT) >= SYM_FIRST_ANOM
+                       ? "" : get_tok_str(t->v & ~SYM_STRUCT, NULL));
+	    dwarf_uleb128(dwarf_info_section, t->c);
+	    dwarf_uleb128(dwarf_info_section, dwarf_line.cur_file);
+	    dwarf_uleb128(dwarf_info_section, file->line_num);
+	    if (t->next) {
+	        pos_sib = dwarf_info_section->data_offset;
+	        dwarf_data4(dwarf_info_section, 0);
+	    }
+	    e = t;
+	    i = 0;
+            while (e->next) {
+                e = e->next;
+		if (STRUCT_NODEBUG(e))
+		    continue;
+	        dwarf_data1(dwarf_info_section,
+			    e->type.t & VT_BITFIELD ? DWARF_ABBREV_MEMBER_BF
+						    : DWARF_ABBREV_MEMBER);
+		dwarf_strp(dwarf_info_section,
+			   get_tok_str(e->v & ~SYM_FIELD, NULL));
+		dwarf_uleb128(dwarf_info_section, dwarf_line.cur_file);
+		dwarf_uleb128(dwarf_info_section, file->line_num);
+		pos_type[i++] = dwarf_info_section->data_offset;
+		dwarf_data4(dwarf_info_section, 0);
+                if (e->type.t & VT_BITFIELD) {
+                    int pos = e->c * 8 + BIT_POS(e->type.t);
+                    int size = BIT_SIZE(e->type.t);
+
+		    dwarf_uleb128(dwarf_info_section, size);
+		    dwarf_uleb128(dwarf_info_section, pos);
+		}
+		else
+		    dwarf_uleb128(dwarf_info_section, e->c);
+	    }
+	    if (t->next) {
+	        dwarf_data1(dwarf_info_section, 0);
+	        write32le(dwarf_info_section->data + pos_sib,
+		          dwarf_info_section->data_offset - dwarf_info.start);
+	    }
+	    e = t;
+	    i = 0;
+	    while (e->next) {
+		e = e->next;
+		if (STRUCT_NODEBUG(e))
+		    continue;
+		type = tcc_get_dwarf_info(s1, e);
+		tcc_debug_check_anon(s1, e, pos_type[i]);
+		write32le(dwarf_info_section->data + pos_type[i++],
+			  type - dwarf_info.start);
+	    }
+	    tcc_free(pos_type);
+	    if (debug_info)
+		tcc_debug_remove(s1, t);
+        }
+    }
+    else if (IS_ENUM(type)) {
+        t = t->type.ref;
+	debug_type = tcc_debug_find(s1, t, 1);
+	if (debug_type == -1) {
+	    int pos_sib, pos_type;
+	    Sym sym = {0}; sym.type.t = VT_INT | (type & VT_UNSIGNED);
+
+	    pos_type = tcc_get_dwarf_info(s1, &sym);
+	    debug_type = tcc_debug_add(s1, t, 1);
+	    dwarf_data1(dwarf_info_section, DWARF_ABBREV_ENUMERATION_TYPE);
+	    dwarf_strp(dwarf_info_section,
+                       (t->v & ~SYM_STRUCT) >= SYM_FIRST_ANOM
+                       ? "" : get_tok_str(t->v & ~SYM_STRUCT, NULL));
+	    dwarf_data1(dwarf_info_section,
+		        type & VT_UNSIGNED ? DW_ATE_unsigned : DW_ATE_signed );
+	    dwarf_data1(dwarf_info_section, 4);
+	    dwarf_data4(dwarf_info_section, pos_type - dwarf_info.start);
+	    dwarf_uleb128(dwarf_info_section, dwarf_line.cur_file);
+	    dwarf_uleb128(dwarf_info_section, file->line_num);
+	    pos_sib = dwarf_info_section->data_offset;
+	    dwarf_data4(dwarf_info_section, 0);
+	    e = t;
+            while (e->next) {
+                e = e->next;
+	        dwarf_data1(dwarf_info_section,
+			type & VT_UNSIGNED ? DWARF_ABBREV_ENUMERATOR_UNSIGNED
+					   : DWARF_ABBREV_ENUMERATOR_SIGNED);
+	        dwarf_strp(dwarf_info_section,
+                           (e->v & ~SYM_FIELD) >= SYM_FIRST_ANOM
+                           ? "" : get_tok_str(e->v & ~SYM_FIELD, NULL));
+		if (type & VT_UNSIGNED)
+	            dwarf_uleb128(dwarf_info_section, e->enum_val);
+		else
+	            dwarf_sleb128(dwarf_info_section, e->enum_val);
+            }
+	    dwarf_data1(dwarf_info_section, 0);
+	    write32le(dwarf_info_section->data + pos_sib,
+		      dwarf_info_section->data_offset - dwarf_info.start);
+	    if (debug_info)
+		tcc_debug_remove(s1, t);
+	}
+    }
+    else if ((type & VT_BTYPE) != VT_FUNC) {
+        type &= ~VT_STRUCT_MASK;
+        for (i = 1; i <= N_DEFAULT_DEBUG; i++)
+            if (default_debug[i - 1].type == type)
+                break;
+        if (i > N_DEFAULT_DEBUG)
+            return 0;
+	debug_type = dwarf_info.base_type_used[i - 1];
+	if (debug_type == 0) {
+	    char name[100];
+
+	    debug_type = dwarf_info_section->data_offset;
+	    dwarf_data1(dwarf_info_section, DWARF_ABBREV_BASE_TYPE);
+	    dwarf_uleb128(dwarf_info_section, default_debug[i - 1].size);
+	    dwarf_data1(dwarf_info_section, default_debug[i - 1].encoding);
+	    strncpy(name, default_debug[i - 1].name, sizeof(name) -1);
+	    *strchr(name, ':') = 0;
+	    dwarf_strp(dwarf_info_section, name);
+	    dwarf_info.base_type_used[i - 1] = debug_type;
+	}
+    }
+    retval = debug_type;
+    e = NULL;
+    t = s;
+    for (;;) {
+        type = t->type.t & ~(VT_STORAGE | VT_CONSTANT | VT_VOLATILE | VT_VLA);
+        if ((type & VT_BTYPE) != VT_BYTE)
+            type &= ~VT_DEFSIGN;
+        if (type == VT_PTR) {
+	    i = dwarf_info_section->data_offset;
+	    if (retval == debug_type)
+		retval = i;
+	    dwarf_data1(dwarf_info_section, DWARF_ABBREV_POINTER);
+	    dwarf_data1(dwarf_info_section, PTR_SIZE);
+	    if (last_pos != -1) {
+		tcc_debug_check_anon(s1, e, last_pos);
+		write32le(dwarf_info_section->data + last_pos,
+			  i - dwarf_info.start);
+	    }
+	    last_pos = dwarf_info_section->data_offset;
+	    e = t->type.ref;
+	    dwarf_data4(dwarf_info_section, 0);
+	}
+        else if (type == (VT_PTR | VT_ARRAY)) {
+	    int sib_pos, sub_type;
+#if LONG_SIZE == 4
+	    Sym sym = {0}; sym.type.t = VT_LONG | VT_INT | VT_UNSIGNED;
+#else
+	    Sym sym = {0}; sym.type.t = VT_LLONG | VT_LONG | VT_UNSIGNED;
+#endif
+
+	    sub_type = tcc_get_dwarf_info(s1, &sym);
+	    i = dwarf_info_section->data_offset;
+	    if (retval == debug_type)
+		retval = i;
+	    dwarf_data1(dwarf_info_section, DWARF_ABBREV_ARRAY_TYPE);
+	    if (last_pos != -1) {
+		tcc_debug_check_anon(s1, e, last_pos);
+		write32le(dwarf_info_section->data + last_pos,
+			  i - dwarf_info.start);
+	    }
+	    last_pos = dwarf_info_section->data_offset;
+	    e = t->type.ref;
+	    dwarf_data4(dwarf_info_section, 0);
+	    sib_pos = dwarf_info_section->data_offset;
+	    dwarf_data4(dwarf_info_section, 0);
+	    for (;;) {
+	        dwarf_data1(dwarf_info_section, DWARF_ABBREV_SUBRANGE_TYPE);
+	        dwarf_data4(dwarf_info_section, sub_type - dwarf_info.start);
+	        dwarf_uleb128(dwarf_info_section, t->type.ref->c - 1);
+		s = t->type.ref;
+		type = s->type.t & ~(VT_STORAGE | VT_CONSTANT | VT_VOLATILE);
+		if (type != (VT_PTR | VT_ARRAY))
+		    break;
+		t = s;
+	    }
+	    dwarf_data1(dwarf_info_section, 0);
+	    write32le(dwarf_info_section->data + sib_pos,
+		      dwarf_info_section->data_offset - dwarf_info.start);
+	}
+        else if (type == VT_FUNC) {
+	    int sib_pos = 0, *pos_type;
+	    Sym *f;
+
+	    i = dwarf_info_section->data_offset;
+	    debug_type = tcc_get_dwarf_info(s1, t->type.ref);
+	    if (retval == debug_type)
+		retval = i;
+	    dwarf_data1(dwarf_info_section,
+			t->type.ref->next ? DWARF_ABBREV_SUBROUTINE_TYPE
+					  : DWARF_ABBREV_SUBROUTINE_EMPTY_TYPE);
+	    if (last_pos != -1) {
+		tcc_debug_check_anon(s1, e, last_pos);
+		write32le(dwarf_info_section->data + last_pos,
+			  i - dwarf_info.start);
+	    }
+	    last_pos = dwarf_info_section->data_offset;
+	    e = t->type.ref;
+	    dwarf_data4(dwarf_info_section, 0);
+	    if (t->type.ref->next) {
+	        sib_pos = dwarf_info_section->data_offset;
+	        dwarf_data4(dwarf_info_section, 0);
+	    }
+	    f = t->type.ref;
+	    i = 0;
+	    while (f->next) {
+		f = f->next;
+		i++;
+	    }
+	    pos_type = (int *) tcc_malloc(i * sizeof(int));
+	    f = t->type.ref;
+	    i = 0;
+	    while (f->next) {
+		f = f->next;
+	        dwarf_data1(dwarf_info_section, DWARF_ABBREV_FORMAL_PARAMETER2);
+		pos_type[i++] = dwarf_info_section->data_offset;
+	        dwarf_data4(dwarf_info_section, 0);
+	    }
+	    if (t->type.ref->next) {
+	        dwarf_data1(dwarf_info_section, 0);
+	        write32le(dwarf_info_section->data + sib_pos,
+		          dwarf_info_section->data_offset - dwarf_info.start);
+	    }
+	    f = t->type.ref;
+	    i = 0;
+	    while (f->next) {
+		f = f->next;
+		type = tcc_get_dwarf_info(s1, f);
+		tcc_debug_check_anon(s1, f, pos_type[i]);
+	        write32le(dwarf_info_section->data + pos_type[i++],
+                          type - dwarf_info.start);
+	    }
+	    tcc_free(pos_type);
+        }
+        else {
+	    if (last_pos != -1) {
+		tcc_debug_check_anon(s1, e, last_pos);
+		write32le(dwarf_info_section->data + last_pos,
+			  debug_type - dwarf_info.start);
+	    }
+            break;
+	}
+        t = t->type.ref;
+    }
+    return retval;
+}
+
+static void tcc_debug_finish (TCCState *s1, struct _debug_info *cur)
+{
+    while (cur) {
+        struct _debug_info *next = cur->next;
+        int i;
+
+        if (s1->dwarf) {
+
+            for (i = cur->n_sym - 1; i >= 0; i--) {
+                struct debug_sym *s = &cur->sym[i];
+
+		dwarf_data1(dwarf_info_section,
+                            s->type == N_PSYM
+			    ? DWARF_ABBREV_FORMAL_PARAMETER
+			    : s->type == N_GSYM
+                            ? DWARF_ABBREV_VARIABLE_EXTERNAL
+                            : s->type == N_STSYM
+			    ? DWARF_ABBREV_VARIABLE_STATIC
+			    : DWARF_ABBREV_VARIABLE_LOCAL);
+                dwarf_strp(dwarf_info_section, s->str);
+		if (s->type == N_GSYM || s->type == N_STSYM) {
+                    dwarf_uleb128(dwarf_info_section, s->file);
+                    dwarf_uleb128(dwarf_info_section, s->line);
+		}
+                dwarf_data4(dwarf_info_section, s->info - dwarf_info.start);
+		if (s->type == N_GSYM || s->type == N_STSYM) {
+		    /* global/static */
+		    if (s->type == N_GSYM)
+                        dwarf_data1(dwarf_info_section, 1);
+                    dwarf_data1(dwarf_info_section, PTR_SIZE + 1);
+                    dwarf_data1(dwarf_info_section, DW_OP_addr);
+		    if (s->type == N_STSYM)
+		        dwarf_reloc(dwarf_info_section, section_sym, R_DATA_PTR);
+#if PTR_SIZE == 4
+                    dwarf_data4(dwarf_info_section, s->value);
+#else
+                    dwarf_data8(dwarf_info_section, s->value);
+#endif
+		}
+		else {
+		    /* param/local */
+                    dwarf_data1(dwarf_info_section, dwarf_sleb128_size(s->value) + 1);
+                    dwarf_data1(dwarf_info_section, DW_OP_fbreg);
+                    dwarf_sleb128(dwarf_info_section, s->value);
+		}
+		tcc_free (s->str);
+            }
+            tcc_free (cur->sym);
+            dwarf_data1(dwarf_info_section,
+			cur->child ? DWARF_ABBREV_LEXICAL_BLOCK
+			           : DWARF_ABBREV_LEXICAL_EMPTY_BLOCK);
+            dwarf_reloc(dwarf_info_section, section_sym, R_DATA_PTR);
+#if PTR_SIZE == 4
+            dwarf_data4(dwarf_info_section, func_ind + cur->start);
+            dwarf_data4(dwarf_info_section, cur->end - cur->start);
+#else
+            dwarf_data8(dwarf_info_section, func_ind + cur->start);
+            dwarf_data8(dwarf_info_section, cur->end - cur->start);
+#endif
+            tcc_debug_finish (s1, cur->child);
+	    if (cur->child)
+                dwarf_data1(dwarf_info_section, 0);
+        }
+        else
+        {
+            for (i = 0; i < cur->n_sym; i++) {
+                struct debug_sym *s = &cur->sym[i];
+
+                if (s->sec)
+                    put_stabs_r(s1, s->str, s->type, 0, 0, s->value,
+                                s->sec, s->sym_index);
+                else
+                    put_stabs(s1, s->str, s->type, 0, 0, s->value);
+                tcc_free (s->str);
+            }
+            tcc_free (cur->sym);
+            put_stabn(s1, N_LBRAC, 0, 0, cur->start);
+            tcc_debug_finish (s1, cur->child);
+            put_stabn(s1, N_RBRAC, 0, 0, cur->end);
+        }
+        tcc_free (cur);
+        cur = next;
+    }
+}
+
+ST_FUNC void tcc_add_debug_info(TCCState *s1, int param, Sym *s, Sym *e)
+{
+    CString debug_str;
+    if (!s1->do_debug)
+        return;
+    cstr_new (&debug_str);
+    for (; s != e; s = s->prev) {
+        if (!s->v || (s->r & VT_VALMASK) != VT_LOCAL)
+            continue;
+	if (s1->dwarf) {
+	    tcc_debug_stabs(s1, get_tok_str(s->v, NULL),
+			    param ? N_PSYM : N_LSYM, s->c, NULL, 0,
+			    tcc_get_dwarf_info(s1, s));
+	}
+	else
+        {
+            cstr_reset (&debug_str);
+            cstr_printf (&debug_str, "%s:%s", get_tok_str(s->v, NULL),
+			 param ? "p" : "");
+            tcc_get_debug_info(s1, s, &debug_str);
+            tcc_debug_stabs(s1, debug_str.data, param ? N_PSYM : N_LSYM,
+			    s->c, NULL, 0, 0);
+	}
+    }
+    cstr_free (&debug_str);
+}
+
+/* put function symbol */
+ST_FUNC void tcc_debug_funcstart(TCCState *s1, Sym *sym)
+{
+    CString debug_str;
+    BufferedFile *f;
+
+    if (!s1->do_debug)
+        return;
+    debug_info_root = NULL;
+    debug_info = NULL;
+    tcc_debug_stabn(s1, N_LBRAC, ind - func_ind);
+    f = put_new_file(s1);
+    if (!f)
+	return;
+
+    if (s1->dwarf) {
+        tcc_debug_line(s1);
+        dwarf_info.func = sym;
+        dwarf_info.line = file->line_num;
+	if (s1->do_backtrace) {
+	    int i, len;
+
+	    dwarf_line_op(s1, 0); // extended
+	    dwarf_uleb128_op(s1, strlen(funcname) + 2);
+	    dwarf_line_op(s1, DW_LNE_hi_user - 1);
+	    len = strlen(funcname) + 1;
+	    for (i = 0; i < len; i++)
+		dwarf_line_op(s1, funcname[i]);
+	}
+    }
+    else
+    {
+        cstr_new (&debug_str);
+        cstr_printf(&debug_str, "%s:%c", funcname, sym->type.t & VT_STATIC ? 'f' : 'F');
+        tcc_get_debug_info(s1, sym->type.ref, &debug_str);
+        put_stabs_r(s1, debug_str.data, N_FUN, 0, f->line_num, 0, cur_text_section, sym->c);
+        cstr_free (&debug_str);
+        tcc_debug_line(s1);
+    }
+}
+
+ST_FUNC void tcc_debug_prolog_epilog(TCCState *s1, int value)
+{
+    if (!s1->do_debug)
+        return;
+    if (s1->dwarf) {
+	dwarf_line_op(s1, value == 0 ? DW_LNS_set_prologue_end
+				     : DW_LNS_set_epilogue_begin);
+    }
+}
+
+/* put function size */
+ST_FUNC void tcc_debug_funcend(TCCState *s1, int size)
+{
+    /* lldb does not like function end and next function start at same pc */
+    int min_instr_len;
+
+    if (!s1->do_debug)
+        return;
+    min_instr_len = dwarf_line.last_pc == ind ? 0 : DWARF_MIN_INSTR_LEN;
+    ind -= min_instr_len;
+    tcc_debug_line(s1);
+    ind += min_instr_len;
+    tcc_debug_stabn(s1, N_RBRAC, size);
+    if (s1->dwarf) {
+        int func_sib = 0;
+	Sym *sym = dwarf_info.func;
+	int n_debug_info = tcc_get_dwarf_info(s1, sym->type.ref);
+
+        dwarf_data1(dwarf_info_section,
+	    sym->type.t & VT_STATIC ? DWARF_ABBREV_SUBPROGRAM_STATIC
+				    : DWARF_ABBREV_SUBPROGRAM_EXTERNAL);
+        if ((sym->type.t & VT_STATIC) == 0)
+            dwarf_data1(dwarf_info_section, 1);
+        dwarf_strp(dwarf_info_section, funcname);
+        dwarf_uleb128(dwarf_info_section, dwarf_line.cur_file);
+        dwarf_uleb128(dwarf_info_section, dwarf_info.line);
+	tcc_debug_check_anon(s1, sym->type.ref, dwarf_info_section->data_offset);
+        dwarf_data4(dwarf_info_section, n_debug_info - dwarf_info.start);
+        dwarf_reloc(dwarf_info_section, section_sym, R_DATA_PTR);
+#if PTR_SIZE == 4
+        dwarf_data4(dwarf_info_section, func_ind); // low_pc
+        dwarf_data4(dwarf_info_section, size); // high_pc
+#else
+        dwarf_data8(dwarf_info_section, func_ind); // low_pc
+        dwarf_data8(dwarf_info_section, size); // high_pc
+#endif
+        func_sib = dwarf_info_section->data_offset;
+        dwarf_data4(dwarf_info_section, 0); // sibling
+        dwarf_data1(dwarf_info_section, 1);
+#if defined(TCC_TARGET_I386)
+        dwarf_data1(dwarf_info_section, DW_OP_reg5); // ebp
+#elif defined(TCC_TARGET_X86_64)
+        dwarf_data1(dwarf_info_section, DW_OP_reg6); // rbp
+#elif defined TCC_TARGET_ARM
+        dwarf_data1(dwarf_info_section, DW_OP_reg13); // sp
+#elif defined TCC_TARGET_ARM64
+        dwarf_data1(dwarf_info_section, DW_OP_reg29); // reg 29
+#elif defined TCC_TARGET_RISCV64
+        dwarf_data1(dwarf_info_section, DW_OP_reg8); // r8(s0)
+#else
+        dwarf_data1(dwarf_info_section, DW_OP_call_frame_cfa);
+#endif
+        tcc_debug_finish (s1, debug_info_root);
+	dwarf_data1(dwarf_info_section, 0);
+        write32le(dwarf_info_section->data + func_sib,
+                  dwarf_info_section->data_offset - dwarf_info.start);
+    }
+    else
+    {
+        tcc_debug_finish (s1, debug_info_root);
+    }
+    debug_info_root = 0;
+}
+
+
+ST_FUNC void tcc_debug_extern_sym(TCCState *s1, Sym *sym, int sh_num, int sym_bind, int sym_type)
+{
+    if (!s1->do_debug)
+        return;
+    if (sym_type == STT_FUNC || sym->v >= SYM_FIRST_ANOM)
+        return;
+    if (s1->dwarf) {
+        int debug_type;
+
+        debug_type = tcc_get_dwarf_info(s1, sym);
+	dwarf_data1(dwarf_info_section,
+		    sym_bind == STB_GLOBAL
+		    ? DWARF_ABBREV_VARIABLE_EXTERNAL
+		    : DWARF_ABBREV_VARIABLE_STATIC);
+	dwarf_strp(dwarf_info_section, get_tok_str(sym->v, NULL));
+	dwarf_uleb128(dwarf_info_section, dwarf_line.cur_file);
+	dwarf_uleb128(dwarf_info_section, file->line_num);
+	tcc_debug_check_anon(s1, sym, dwarf_info_section->data_offset);
+	dwarf_data4(dwarf_info_section, debug_type - dwarf_info.start);
+	if (sym_bind == STB_GLOBAL)
+	    dwarf_data1(dwarf_info_section, 1);
+	dwarf_data1(dwarf_info_section, PTR_SIZE + 1);
+	dwarf_data1(dwarf_info_section, DW_OP_addr);
+	greloca(dwarf_info_section, sym, dwarf_info_section->data_offset,
+		R_DATA_PTR, 0);
+#if PTR_SIZE == 4
+	dwarf_data4(dwarf_info_section, 0);
+#else
+	dwarf_data8(dwarf_info_section, 0);
+#endif
+    }
+    else
+    {
+        Section *s = sh_num == SHN_COMMON ? common_section
+					  : s1->sections[sh_num];
+        CString str;
+
+        cstr_new (&str);
+        cstr_printf (&str, "%s:%c",
+                get_tok_str(sym->v, NULL),
+                sym_bind == STB_GLOBAL ? 'G' : func_ind != -1 ? 'V' : 'S'
+                );
+        tcc_get_debug_info(s1, sym, &str);
+        if (sym_bind == STB_GLOBAL)
+            tcc_debug_stabs(s1, str.data, N_GSYM, 0, NULL, 0, 0);
+        else
+            tcc_debug_stabs(s1, str.data,
+                (sym->type.t & VT_STATIC) && data_section == s
+                ? N_STSYM : N_LCSYM, 0, s, sym->c, 0);
+        cstr_free (&str);
+    }
+}
+
+ST_FUNC void tcc_debug_typedef(TCCState *s1, Sym *sym)
+{
+    if (!s1->do_debug)
+        return;
+    if (s1->dwarf) {
+	int debug_type;
+
+        debug_type = tcc_get_dwarf_info(s1, sym);
+	if (debug_type != -1) {
+	    dwarf_data1(dwarf_info_section, DWARF_ABBREV_TYPEDEF);
+	    dwarf_strp(dwarf_info_section, get_tok_str(sym->v & ~SYM_FIELD, NULL));
+	    dwarf_uleb128(dwarf_info_section, dwarf_line.cur_file);
+	    dwarf_uleb128(dwarf_info_section, file->line_num);
+	    tcc_debug_check_anon(s1, sym, dwarf_info_section->data_offset);
+	    dwarf_data4(dwarf_info_section, debug_type - dwarf_info.start);
+	}
+    }
+    else
+    {
+        CString str;
+        cstr_new (&str);
+        cstr_printf (&str, "%s:t",
+                     (sym->v & ~SYM_FIELD) >= SYM_FIRST_ANOM
+                     ? "" : get_tok_str(sym->v & ~SYM_FIELD, NULL));
+        tcc_get_debug_info(s1, sym, &str);
+        tcc_debug_stabs(s1, str.data, N_LSYM, 0, NULL, 0, 0);
+        cstr_free (&str);
+    }
+}
+
+/* ------------------------------------------------------------------------- */
+/* for section layout see lib/tcov.c */
+
+ST_FUNC void tcc_tcov_block_end(TCCState *s1, int line);
+
+ST_FUNC void tcc_tcov_block_begin(TCCState *s1)
+{
+    SValue sv;
+    void *ptr;
+    unsigned long last_offset = tcov_data.offset;
+
+    tcc_tcov_block_end (tcc_state, 0);
+    if (s1->test_coverage == 0 || nocode_wanted)
+	return;
+
+    if (tcov_data.last_file_name == 0 ||
+	strcmp ((const char *)(tcov_section->data + tcov_data.last_file_name),
+		file->true_filename) != 0) {
+	char wd[1024];
+	CString cstr;
+
+	if (tcov_data.last_func_name)
+	    section_ptr_add(tcov_section, 1);
+	if (tcov_data.last_file_name)
+	    section_ptr_add(tcov_section, 1);
+	tcov_data.last_func_name = 0;
+	cstr_new (&cstr);
+	if (file->true_filename[0] == '/') {
+	    tcov_data.last_file_name = tcov_section->data_offset;
+	    cstr_printf (&cstr, "%s", file->true_filename);
+	}
+	else {
+	    getcwd (wd, sizeof(wd));
+	    tcov_data.last_file_name = tcov_section->data_offset + strlen(wd) + 1;
+	    cstr_printf (&cstr, "%s/%s", wd, file->true_filename);
+	}
+	ptr = section_ptr_add(tcov_section, cstr.size + 1);
+	strcpy((char *)ptr, cstr.data);
+#ifdef _WIN32
+        normalize_slashes((char *)ptr);
+#endif
+	cstr_free (&cstr);
+    }
+    if (tcov_data.last_func_name == 0 ||
+	strcmp ((const char *)(tcov_section->data + tcov_data.last_func_name),
+		funcname) != 0) {
+	size_t len;
+
+	if (tcov_data.last_func_name)
+	    section_ptr_add(tcov_section, 1);
+	tcov_data.last_func_name = tcov_section->data_offset;
+	len = strlen (funcname);
+	ptr = section_ptr_add(tcov_section, len + 1);
+	strcpy((char *)ptr, funcname);
+	section_ptr_add(tcov_section, -tcov_section->data_offset & 7);
+	ptr = section_ptr_add(tcov_section, 8);
+	write64le (ptr, file->line_num);
+    }
+    if (ind == tcov_data.ind && tcov_data.line == file->line_num)
+        tcov_data.offset = last_offset;
+    else {
+        Sym label = {0};
+        label.type.t = VT_LLONG | VT_STATIC;
+
+        ptr = section_ptr_add(tcov_section, 16);
+        tcov_data.line = file->line_num;
+        write64le (ptr, (tcov_data.line << 8) | 0xff);
+        put_extern_sym(&label, tcov_section,
+		       ((unsigned char *)ptr - tcov_section->data) + 8, 0);
+        sv.type = label.type;
+        sv.r = VT_SYM | VT_LVAL | VT_CONST;
+        sv.r2 = VT_CONST;
+        sv.c.i = 0;
+        sv.sym = &label;
+#if defined TCC_TARGET_I386 || defined TCC_TARGET_X86_64 || \
+    defined TCC_TARGET_ARM || defined TCC_TARGET_ARM64 || \
+    defined TCC_TARGET_RISCV64
+        gen_increment_tcov (&sv);
+#else
+        vpushv(&sv);
+        inc(0, TOK_INC);
+        vpop();
+#endif
+        tcov_data.offset = (unsigned char *)ptr - tcov_section->data;
+        tcov_data.ind = ind;
+    }
+}
+
+ST_FUNC void tcc_tcov_block_end(TCCState *s1, int line)
+{
+    if (s1->test_coverage == 0)
+	return;
+    if (line == -1)
+        line = tcov_data.line;
+    if (tcov_data.offset) {
+	void *ptr = tcov_section->data + tcov_data.offset;
+	unsigned long long nline = line ? line : file->line_num;
+
+	write64le (ptr, (read64le (ptr) & 0xfffffffffull) | (nline << 36));
+	tcov_data.offset = 0;
+    }
+}
+
+ST_FUNC void tcc_tcov_check_line(TCCState *s1, int start)
+{
+    if (s1->test_coverage == 0)
+	return;
+    if (tcov_data.line != file->line_num) {
+        if ((tcov_data.line + 1) != file->line_num) {
+	    tcc_tcov_block_end (s1, -1);
+	    if (start)
+                tcc_tcov_block_begin (s1);
+	}
+	else
+	    tcov_data.line = file->line_num;
+    }
+}
+
+ST_FUNC void tcc_tcov_start(TCCState *s1)
+{
+    if (s1->test_coverage == 0)
+	return;
+    if (!s1->dState)
+        s1->dState = tcc_mallocz(sizeof *s1->dState);
+    memset (&tcov_data, 0, sizeof (tcov_data));
+    if (tcov_section == NULL) {
+        tcov_section = new_section(tcc_state, ".tcov", SHT_PROGBITS,
+				   SHF_ALLOC | SHF_WRITE);
+	section_ptr_add(tcov_section, 4); // pointer to executable name
+    }
+}
+
+ST_FUNC void tcc_tcov_end(TCCState *s1)
+{
+    if (s1->test_coverage == 0)
+	return;
+    if (tcov_data.last_func_name)
+        section_ptr_add(tcov_section, 1);
+    if (tcov_data.last_file_name)
+        section_ptr_add(tcov_section, 1);
+}
+
+ST_FUNC void tcc_tcov_reset_ind(TCCState *s1)
+{
+    tcov_data.ind = 0;
+}
+
+/* ------------------------------------------------------------------------- */
+#undef last_line_num
+#undef new_file
+#undef section_sym
+#undef debug_next_type
+#undef debug_hash
+#undef n_debug_hash
+#undef debug_anon_hash
+#undef n_debug_anon_hash
+#undef debug_info
+#undef debug_info_root
+#undef dwarf_sym
+#undef dwarf_line
+#undef dwarf_info
+#undef tcov_data