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authorMichael Snyder <msnyder@vmware.com>2003-07-23 01:25:55 +0000
committerMichael Snyder <msnyder@vmware.com>2003-07-23 01:25:55 +0000
commit708cc1b6ac16951d891bfcd16f0af357417c2d93 (patch)
tree9bef79f0efb13db1471f63c071c5bdf4dee7a5d8 /gdb/h8300-tdep.c
parent53946b3266f55186a5c892721b8edaf67b1e9533 (diff)
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2003-07-22 Michael Snyder <msnyder@redhat.com>
* h8300-tdep.c (h8300_extract_return_value): Teach it how to handle 8-bit returns (long long). (h8300h_extract_return_value): Ditto. (h8300_gdbarch_init): Long long is 8 bytes, char is unsigned.
Diffstat (limited to 'gdb/h8300-tdep.c')
-rw-r--r--gdb/h8300-tdep.c55
1 files changed, 37 insertions, 18 deletions
diff --git a/gdb/h8300-tdep.c b/gdb/h8300-tdep.c
index 1253b4d..c60c299 100644
--- a/gdb/h8300-tdep.c
+++ b/gdb/h8300-tdep.c
@@ -771,7 +771,7 @@ h8300_extract_return_value (struct type *type, struct regcache *regcache,
void *valbuf)
{
int len = TYPE_LENGTH (type);
- ULONGEST c;
+ ULONGEST c, addr;
switch (len)
{
@@ -786,9 +786,17 @@ h8300_extract_return_value (struct type *type, struct regcache *regcache,
regcache_cooked_read_unsigned (regcache, E_RET1_REGNUM, &c);
store_unsigned_integer ((void*)((char *)valbuf + 2), 2, c);
break;
- case 8: /* long long, double and long double are all defined
- as 4 byte types so far so this shouldn't happen. */
- error ("I don't know how a 8 byte value is returned.");
+ case 8: /* long long is now 8 bytes. */
+ if (TYPE_CODE (type) == TYPE_CODE_INT)
+ {
+ regcache_cooked_read_unsigned (regcache, E_RET0_REGNUM, &addr);
+ c = read_memory_unsigned_integer ((CORE_ADDR) addr, len);
+ store_unsigned_integer (valbuf, len, c);
+ }
+ else
+ {
+ error ("I don't know how this 8 byte value is returned.");
+ }
break;
}
}
@@ -798,7 +806,7 @@ h8300h_extract_return_value (struct type *type, struct regcache *regcache,
void *valbuf)
{
int len = TYPE_LENGTH (type);
- ULONGEST c;
+ ULONGEST c, addr;
switch (len)
{
@@ -808,9 +816,17 @@ h8300h_extract_return_value (struct type *type, struct regcache *regcache,
regcache_cooked_read_unsigned (regcache, E_RET0_REGNUM, &c);
store_unsigned_integer (valbuf, len, c);
break;
- case 8: /* long long, double and long double are all defined
- as 4 byte types so far so this shouldn't happen. */
- error ("I don't know how a 8 byte value is returned.");
+ case 8: /* long long is now 8 bytes. */
+ if (TYPE_CODE (type) == TYPE_CODE_INT)
+ {
+ regcache_cooked_read_unsigned (regcache, E_RET0_REGNUM, &addr);
+ c = read_memory_unsigned_integer ((CORE_ADDR) addr, len);
+ store_unsigned_integer (valbuf, len, c);
+ }
+ else
+ {
+ error ("I don't know how this 8 byte value is returned.");
+ }
break;
}
}
@@ -830,19 +846,19 @@ h8300_store_return_value (struct type *type, struct regcache *regcache,
switch (len)
{
case 1:
- case 2:
+ case 2: /* short... */
val = extract_unsigned_integer (valbuf, len);
regcache_cooked_write_unsigned (regcache, E_RET0_REGNUM, val);
break;
- case 4: /* long, float */
+ case 4: /* long, float */
val = extract_unsigned_integer (valbuf, len);
regcache_cooked_write_unsigned (regcache, E_RET0_REGNUM,
(val >> 16) &0xffff);
regcache_cooked_write_unsigned (regcache, E_RET1_REGNUM, val & 0xffff);
break;
- case 8: /* long long, double and long double are all defined
- as 4 byte types so far so this shouldn't happen. */
- error ("I don't know how to return a 8 byte value.");
+ case 8: /* long long, double and long double are all defined
+ as 4 byte types so far so this shouldn't happen. */
+ error ("I don't know how to return an 8 byte value.");
break;
}
}
@@ -858,13 +874,13 @@ h8300h_store_return_value (struct type *type, struct regcache *regcache,
{
case 1:
case 2:
- case 4: /* long, float */
+ case 4: /* long, float */
val = extract_unsigned_integer (valbuf, len);
regcache_cooked_write_unsigned (regcache, E_RET0_REGNUM, val);
break;
- case 8: /* long long, double and long double are all defined
- as 4 byte types so far so this shouldn't happen. */
- error ("I don't know how to return a 8 byte value.");
+ case 8: /* long long, double and long double are all defined
+ as 4 byte types so far so this shouldn't happen. */
+ error ("I don't know how to return an 8 byte value.");
break;
}
}
@@ -1310,13 +1326,16 @@ h8300_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_int_bit (gdbarch, 2 * TARGET_CHAR_BIT);
set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT);
- set_gdbarch_long_long_bit (gdbarch, 4 * TARGET_CHAR_BIT);
+ set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT);
set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT);
set_gdbarch_long_double_bit (gdbarch, 4 * TARGET_CHAR_BIT);
/* set_gdbarch_stack_align (gdbarch, SOME_stack_align); */
set_gdbarch_believe_pcc_promotion (gdbarch, 1);
+ /* Char is unsigned. */
+ set_gdbarch_char_signed (gdbarch, 0);
+
return gdbarch;
}