[PATCH 06/10] [WineDbg]: implement float fetching for X86-64 debugger
Eric Pouech
eric.pouech at orange.fr
Wed Feb 3 14:47:40 CST 2010
A+
---
programs/winedbg/be_i386.c | 2 +-
programs/winedbg/be_x86_64.c | 20 +++++++++++++++++---
2 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/programs/winedbg/be_i386.c b/programs/winedbg/be_i386.c
index e805a80..6ab5970 100644
--- a/programs/winedbg/be_i386.c
+++ b/programs/winedbg/be_i386.c
@@ -726,7 +726,7 @@ static int be_i386_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
static int be_i386_fetch_float(const struct dbg_lvalue* lvalue, unsigned size,
long double* ret)
{
- char tmp[12];
+ char tmp[sizeof(long double)];
/* FIXME: this assumes that debuggee and debugger use the same
* representation for reals
diff --git a/programs/winedbg/be_x86_64.c b/programs/winedbg/be_x86_64.c
index 3a111af..42cdcab 100644
--- a/programs/winedbg/be_x86_64.c
+++ b/programs/winedbg/be_x86_64.c
@@ -364,11 +364,25 @@ static int be_x86_64_fetch_integer(const struct dbg_lvalue* lvalue, unsigned siz
return TRUE;
}
-static int be_x86_64_fetch_float(const struct dbg_lvalue* lvalue, unsigned size,
+static int be_x86_64_fetch_float(const struct dbg_lvalue* lvalue, unsigned size,
long double* ret)
{
- dbg_printf("not done fetch_float\n");
- return FALSE;
+ char tmp[sizeof(long double)];
+
+ /* FIXME: this assumes that debuggee and debugger use the same
+ * representation for reals
+ */
+ if (!memory_read_value(lvalue, size, tmp)) return FALSE;
+
+ /* float & double types have to be promoted to a long double */
+ switch (size)
+ {
+ case sizeof(float): *ret = *(float*)tmp; break;
+ case sizeof(double): *ret = *(double*)tmp; break;
+ case sizeof(long double): *ret = *(long double*)tmp; break;
+ default: return FALSE;
+ }
+ return TRUE;
}
struct backend_cpu be_x86_64 =
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