diff options
Diffstat (limited to 'gdb/findvar.c')
| -rw-r--r-- | gdb/findvar.c | 32 |
1 files changed, 25 insertions, 7 deletions
diff --git a/gdb/findvar.c b/gdb/findvar.c index 9225727..edf85ee 100644 --- a/gdb/findvar.c +++ b/gdb/findvar.c @@ -187,9 +187,27 @@ store_address (addr, len, val) store_unsigned_integer (addr, len, (LONGEST)val); } - -/* There are many problems with floating point cross-debugging - in macro SWAP_TARGET_AND_HOST(). +/* Swap LEN bytes at BUFFER between target and host byte-order. */ +#define SWAP_FLOATING(buffer,len) \ + do \ + { \ + if (TARGET_BYTE_ORDER != HOST_BYTE_ORDER) \ + { \ + char tmp; \ + char *p = (char *)(buffer); \ + char *q = ((char *)(buffer)) + len - 1; \ + for (; p < q; p++, q--) \ + { \ + tmp = *q; \ + *q = *p; \ + *p = tmp; \ + } \ + } \ + } \ + while (0) + +/* There are various problems with the extract_floating and store_floating + routines. 1. These routines only handle byte-swapping, not conversion of formats. So if host is IEEE floating and target is VAX floating, @@ -213,14 +231,14 @@ extract_floating (addr, len) { float retval; memcpy (&retval, addr, sizeof (retval)); - SWAP_TARGET_AND_HOST (&retval, sizeof (retval)); + SWAP_FLOATING (&retval, sizeof (retval)); return retval; } else if (len == sizeof (double)) { double retval; memcpy (&retval, addr, sizeof (retval)); - SWAP_TARGET_AND_HOST (&retval, sizeof (retval)); + SWAP_FLOATING (&retval, sizeof (retval)); return retval; } else @@ -238,12 +256,12 @@ store_floating (addr, len, val) if (len == sizeof (float)) { float floatval = val; - SWAP_TARGET_AND_HOST (&floatval, sizeof (floatval)); + SWAP_FLOATING (&floatval, sizeof (floatval)); memcpy (addr, &floatval, sizeof (floatval)); } else if (len == sizeof (double)) { - SWAP_TARGET_AND_HOST (&val, sizeof (val)); + SWAP_FLOATING (&val, sizeof (val)); memcpy (addr, &val, sizeof (val)); } else |