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Fix bitfield long types for stabs/dwarf

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Also made dwarf *leb128 fuctions a litlle bit faster.
This commit is contained in:
herman ten brugge 2022-05-25 17:04:37 +02:00
parent e301a0ba8d
commit a4e0f7ef05
1 changed files with 25 additions and 25 deletions
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50
tccdbg.c
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@ -69,7 +69,14 @@ static const struct {
{ VT_BYTE | VT_UNSIGNED, 1, DW_ATE_unsigned_char, "unsigned char:t25=r25;0;255;" }, { VT_BYTE | VT_UNSIGNED, 1, DW_ATE_unsigned_char, "unsigned char:t25=r25;0;255;" },
/* boolean type */ /* boolean type */
{ VT_BOOL, 1, DW_ATE_boolean, "bool:t26=r26;0;255;" }, { 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" }, { 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])) #define N_DEFAULT_DEBUG (sizeof (default_debug) / sizeof (default_debug[0]))
@ -584,17 +591,16 @@ static int dwarf_uleb128_size (unsigned long long value)
static int dwarf_sleb128_size (long long value) static int dwarf_sleb128_size (long long value)
{ {
int more;
int size = 0; int size = 0;
long long end = value >> 63;
unsigned char last = end & 0x40;
unsigned char byte;
do { do {
unsigned char byte = value & 0x7f; byte = value & 0x7f;
value >>= 7;
value = (value >> 7) | ~(-1 >> 7);
more =!((((value == 0) && ((byte & 0x40) == 0))
|| ((value == -1) && ((byte & 0x40) != 0))));
size++; size++;
} while (more); } while (value != end || (byte & 0x40) != last);
return size; return size;
} }
@ -604,25 +610,22 @@ static void dwarf_uleb128 (Section *s, unsigned long long value)
unsigned char byte = value & 0x7f; unsigned char byte = value & 0x7f;
value >>= 7; value >>= 7;
if (value) dwarf_data1(s, byte | (value ? 0x80 : 0));
byte |= 0x80;
dwarf_data1(s, byte);
} while (value != 0); } while (value != 0);
} }
static void dwarf_sleb128 (Section *s, long long value) static void dwarf_sleb128 (Section *s, long long value)
{ {
int more; int more;
long long end = value >> 63;
unsigned char last = end & 0x40;
do { do {
unsigned char byte = value & 0x7f; unsigned char byte = value & 0x7f;
value = (value >> 7) | ~(-1 >> 7); value >>= 7;
more =!((((value == 0) && ((byte & 0x40) == 0)) more = value != end || (byte & 0x40) != last;
|| ((value == -1) && ((byte & 0x40) != 0)))); dwarf_data1(s, byte | (0x80 * more));
if (more)
byte |= 0x80;
dwarf_data1(s, byte);
} while (more); } while (more);
} }
@ -632,25 +635,22 @@ static void dwarf_uleb128_op (TCCState *s1, unsigned long long value)
unsigned char byte = value & 0x7f; unsigned char byte = value & 0x7f;
value >>= 7; value >>= 7;
if (value) dwarf_line_op(s1, byte | (value ? 0x80 : 0));
byte |= 0x80;
dwarf_line_op(s1, byte);
} while (value != 0); } while (value != 0);
} }
static void dwarf_sleb128_op (TCCState *s1, long long value) static void dwarf_sleb128_op (TCCState *s1, long long value)
{ {
int more; int more;
long long end = value >> 63;
unsigned char last = end & 0x40;
do { do {
unsigned char byte = value & 0x7f; unsigned char byte = value & 0x7f;
value = (value >> 7) | ~(-1 >> 7); value >>= 7;
more =!((((value == 0) && ((byte & 0x40) == 0)) more = value != end || (byte & 0x40) != last;
|| ((value == -1) && ((byte & 0x40) != 0)))); dwarf_line_op(s1, byte | (0x80 * more));
if (more)
byte |= 0x80;
dwarf_line_op(s1, byte);
} while (more); } while (more);
} }