#include "psim.h"
#include "options.h"
+#include "registers.h"
#undef printf_filtered /* blow away the mapping */
#endif
#endif
-#include "defs.h"
#include "bfd.h"
#include "gdb/callback.h"
#include "gdb/remote-sim.h"
+#include "gdb/sim-ppc.h"
/* Define the rate at which the simulator should poll the host
for a quit. */
static device *root_device;
static host_callback *callbacks;
-/* We use GDB's gdbarch_register_name function to map GDB register
- numbers onto names, which we can then look up in the register
- table. Since the `set architecture' command can select a new
- processor variant at run-time, the meanings of the register numbers
- can change, so we need to make sure the sim uses the same
- name/number mapping that GDB uses.
-
- (We don't use the REGISTER_NAME macro, which is a wrapper for
- gdbarch_register_name. We #include GDB's "defs.h", which tries to
- #include GDB's "config.h", but gets ours instead, and REGISTER_NAME
- ends up not getting defined. Simpler to just use
- gdbarch_register_name directly.)
-
- We used to just use the REGISTER_NAMES macro from GDB's
- target-dependent header files, which expanded into an initializer
- for an array of strings. That was kind of nice, because it meant
- that libsim.a had only a compile-time dependency on GDB; using
- gdbarch_register_name directly means that there are now link-time
- and run-time dependencies too.
-
- Perhaps the host_callback structure could provide a function for
- retrieving register names; that would be cleaner. */
-
SIM_DESC
sim_open (SIM_OPEN_KIND kind,
host_callback *callback,
}
+/* A table mapping register numbers (as received from GDB) to register
+ names. This table does not handle special-purpose registers: the
+ SPR whose number is N is assigned the register number
+ sim_ppc_spr0_regnum + N. */
+static const char *gdb_register_name_table[] = {
+
+ /* General-purpose registers: 0 .. 31. */
+ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
+ "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
+ "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
+
+ /* Floating-point registers: 32 .. 63. */
+ "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
+ "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
+ "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
+ "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
+
+ /* Altivec registers: 64 .. 95. */
+ "vr0", "vr1", "vr2", "vr3", "vr4", "vr5", "vr6", "vr7",
+ "vr8", "vr9", "vr10", "vr11", "vr12", "vr13", "vr14", "vr15",
+ "vr16", "vr17", "vr18", "vr19", "vr20", "vr21", "vr22", "vr23",
+ "vr24", "vr25", "vr26", "vr27", "vr28", "vr29", "vr30", "vr31",
+
+ /* SPE APU GPR upper halves: 96 .. 127. */
+ "rh0", "rh1", "rh2", "rh3", "rh4", "rh5", "rh6", "rh7",
+ "rh8", "rh9", "rh10", "rh11", "rh12", "rh13", "rh14", "rh15",
+ "rh16", "rh17", "rh18", "rh19", "rh20", "rh21", "rh22", "rh23",
+ "rh24", "rh25", "rh26", "rh27", "rh28", "rh29", "rh30", "rh31",
+
+ /* SPE APU full 64-bit vector registers: 128 .. 159. */
+ "ev0", "ev1", "ev2", "ev3", "ev4", "ev5", "ev6", "ev7",
+ "ev8", "ev9", "ev10", "ev11", "ev12", "ev13", "ev14", "ev15",
+ "ev16", "ev17", "ev18", "ev19", "ev20", "ev21", "ev22", "ev23",
+ "ev24", "ev25", "ev26", "ev27", "ev28", "ev29", "ev30", "ev31",
+
+ /* Segment registers: 160 .. 175. */
+ "sr0", "sr1", "sr2", "sr3", "sr4", "sr5", "sr6", "sr7",
+ "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15",
+
+ /* Miscellaneous (not special-purpose!) registers: 176 .. 181. */
+ "pc", "ps", "cr", "fpscr", "acc", "vscr"
+};
+
+enum {
+ gdb_register_name_table_size = (sizeof (gdb_register_name_table)
+ / sizeof (gdb_register_name_table[0])),
+};
+
+
+/* Return the name of the register whose number is REGNUM, or zero if
+ REGNUM is an invalid register number. */
+static const char *
+gdb_register_name (int regnum)
+{
+ /* Is it a special-purpose register? */
+ if (sim_ppc_spr0_regnum <= regnum
+ && regnum < sim_ppc_spr0_regnum + sim_ppc_num_sprs)
+ {
+ int spr = regnum - sim_ppc_spr0_regnum;
+ if (spr_is_valid (spr))
+ return spr_name (spr);
+ else
+ return 0;
+ }
+
+ /* Is it a valid non-SPR register number? */
+ else if (0 <= regnum && regnum < gdb_register_name_table_size)
+ return gdb_register_name_table[regnum];
+
+ /* Not a valid register number at all. */
+ else
+ return 0;
+}
+
+
int
sim_fetch_register (SIM_DESC sd, int regno, unsigned char *buf, int length)
{
return 0;
}
- /* GDB will sometimes ask for the contents of a register named "";
- we ignore such requests, and leave garbage in *BUF. In GDB
- terms, the empty string means "the register with this number is
- not present in the currently selected architecture variant."
- That's following the kludge we're using for the MIPS processors.
- But there are loops that just walk through the entire list of
- names and try to get everything. */
- regname = gdbarch_register_name (current_gdbarch, regno);
- if (! regname || regname[0] == '\0')
+ regname = gdb_register_name (regno);
+
+ /* Occasionally, GDB will pass invalid register numbers to us; it
+ wants us to ignore them. */
+ if (! regname)
return -1;
TRACE(trace_gdb, ("sim_fetch_register(regno=%d(%s), buf=0x%lx)\n",
if (simulator == NULL)
return 0;
- /* See comments in sim_fetch_register, above. */
- regname = gdbarch_register_name (current_gdbarch, regno);
- if (! regname || regname[0] == '\0')
+ regname = gdb_register_name (regno);
+
+ /* Occasionally, GDB will pass invalid register numbers to us; it
+ wants us to ignore them. */
+ if (! regname)
return -1;
TRACE(trace_gdb, ("sim_store_register(regno=%d(%s), buf=0x%lx)\n",
projects / deliverable / binutils-gdb.git / blobdiff