target/ppc: Drop use of gdb_get_float64() and ldfq_p()

We used to make a distinction between 'float64'/'float32' types and
the 'uint64_t'/'uint32_t' types, requiring special conversion
operations to go between them.  We've now dropped this distinction as
unnecessary, and the 'float*' types remain primarily for
documentation purposes when used in places like the function
prototypes of TCG helper functions.

This means that there's no need for a special gdb_get_float64()
function to write a float64 value to the GDB protocol buffer; we can
just use gdb_get_reg64().

Similarly, for reading a value out of the GDB buffer into a float64
we can use ldq_p() and need not use ldfq_p().
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NPhilippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: NDavid Gibson <david@gibson.dropbear.id.au>
Message-Id: <20210208113428.7181-4-peter.maydell@linaro.org>
Message-Id: <20210211122750.22645-13-alex.bennee@linaro.org>

target/ppc/gdbstub.c

@@ -130,7 +130,7 @@ int ppc_cpu_gdb_read_register(CPUState *cs, GByteArray *buf, int n)
         gdb_get_regl(buf, env->gpr[n]);
     } else if (n < 64) {
         /* fprs */
-        gdb_get_float64(buf, *cpu_fpr_ptr(env, n - 32));
+        gdb_get_reg64(buf, *cpu_fpr_ptr(env, n - 32));
     } else {
         switch (n) {
         case 64:
@@ -184,7 +184,7 @@ int ppc_cpu_gdb_read_register_apple(CPUState *cs, GByteArray *buf, int n)
         gdb_get_reg64(buf, env->gpr[n]);
     } else if (n < 64) {
         /* fprs */
-        gdb_get_float64(buf, *cpu_fpr_ptr(env, n - 32));
+        gdb_get_reg64(buf, *cpu_fpr_ptr(env, n - 32));
     } else if (n < 96) {
         /* Altivec */
         gdb_get_reg64(buf, n - 64);
@@ -241,7 +241,7 @@ int ppc_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
         env->gpr[n] = ldtul_p(mem_buf);
     } else if (n < 64) {
         /* fprs */
-        *cpu_fpr_ptr(env, n - 32) = ldfq_p(mem_buf);
+        *cpu_fpr_ptr(env, n - 32) = ldq_p(mem_buf);
     } else {
         switch (n) {
         case 64:
@@ -291,7 +291,7 @@ int ppc_cpu_gdb_write_register_apple(CPUState *cs, uint8_t *mem_buf, int n)
         env->gpr[n] = ldq_p(mem_buf);
     } else if (n < 64) {
         /* fprs */
-        *cpu_fpr_ptr(env, n - 32) = ldfq_p(mem_buf);
+        *cpu_fpr_ptr(env, n - 32) = ldq_p(mem_buf);
     } else {
         switch (n) {
         case 64 + 32:

target/ppc/translate_init.c.inc

@@ -9923,7 +9923,7 @@ static int gdb_get_float_reg(CPUPPCState *env, GByteArray *buf, int n)
 {
     uint8_t *mem_buf;
     if (n < 32) {
-        gdb_get_float64(buf, *cpu_fpr_ptr(env, n));
+        gdb_get_reg64(buf, *cpu_fpr_ptr(env, n));
         mem_buf = gdb_get_reg_ptr(buf, 8);
         ppc_maybe_bswap_register(env, mem_buf, 8);
         return 8;
@@ -9941,7 +9941,7 @@ static int gdb_set_float_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
 {
     if (n < 32) {
         ppc_maybe_bswap_register(env, mem_buf, 8);
-        *cpu_fpr_ptr(env, n) = ldfq_p(mem_buf);
+        *cpu_fpr_ptr(env, n) = ldq_p(mem_buf);
         return 8;
     }
     if (n == 32) {