/* Target-dependent code for the MIPS architecture, for GDB, the GNU Debugger.
- Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998
- Free Software Foundation, Inc.
+ Copyright 1988-1999, Free Software Foundation, Inc.
Contributed by Alessandro Forin(af@cs.cmu.edu) at CMU
and by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin.
static CORE_ADDR read_next_frame_reg PARAMS ((struct frame_info *, int));
-void mips_set_processor_type_command PARAMS ((char *, int));
-
int mips_set_processor_type PARAMS ((char *));
static void mips_show_processor_type_command PARAMS ((char *, int));
&& fi->extra_info
&& fi->extra_info->proc_desc
&& fi->extra_info->proc_desc->pdr.framereg < NUM_REGS)
- printf_filtered (" frame pointer is at %s+%d\n",
+ printf_filtered (" frame pointer is at %s+%s\n",
REGISTER_NAME (fi->extra_info->proc_desc->pdr.framereg),
- fi->extra_info->proc_desc->pdr.frameoffset);
+ paddr_d (fi->extra_info->proc_desc->pdr.frameoffset));
+}
+
+/* Convert between RAW and VIRTUAL registers. The RAW register size
+ defines the remote-gdb packet. */
+
+static int mips64_transfers_32bit_regs_p = 0;
+
+int
+mips_register_raw_size (reg_nr)
+ int reg_nr;
+{
+ if (mips64_transfers_32bit_regs_p)
+ return REGISTER_VIRTUAL_SIZE (reg_nr);
+ else
+ return MIPS_REGSIZE;
+}
+
+int
+mips_register_convertible (reg_nr)
+ int reg_nr;
+{
+ if (mips64_transfers_32bit_regs_p)
+ return 0;
+ else
+ return (REGISTER_RAW_SIZE (reg_nr) > REGISTER_VIRTUAL_SIZE (reg_nr));
+}
+
+void
+mips_register_convert_to_virtual (n, virtual_type, raw_buf, virt_buf)
+ int n;
+ struct type *virtual_type;
+ char *raw_buf;
+ char *virt_buf;
+{
+ if (TARGET_BYTE_ORDER == BIG_ENDIAN)
+ memcpy (virt_buf,
+ raw_buf + (REGISTER_RAW_SIZE (n) - TYPE_LENGTH (virtual_type)),
+ TYPE_LENGTH (virtual_type));
+ else
+ memcpy (virt_buf,
+ raw_buf,
+ TYPE_LENGTH (virtual_type));
+}
+
+void
+mips_register_convert_to_raw (virtual_type, n, virt_buf, raw_buf)
+ struct type *virtual_type;
+ int n;
+ char *virt_buf;
+ char *raw_buf;
+{
+ memset (raw_buf, 0, REGISTER_RAW_SIZE (n));
+ if (TARGET_BYTE_ORDER == BIG_ENDIAN)
+ memcpy (raw_buf + (REGISTER_RAW_SIZE (n) - TYPE_LENGTH (virtual_type)),
+ virt_buf,
+ TYPE_LENGTH (virtual_type));
+ else
+ memcpy (raw_buf,
+ virt_buf,
+ TYPE_LENGTH (virtual_type));
}
/* Should the upper word of 64-bit addresses be zeroed? */
print_unpack (char *comment,
struct upk_mips16 *u)
{
- printf ("%s %04x ,f(%d) off(%08x) (x(%x) y(%x)\n",
- comment, u->inst, u->fmt, u->offset, u->regx, u->regy);
+ printf ("%s %04x ,f(%d) off(%s) (x(%x) y(%x)\n",
+ comment, u->inst, u->fmt, paddr (u->offset), u->regx, u->regy);
}
/* The EXT-I, EXT-ri nad EXT-I8 instructions all have the same
{
/* This is a floating point value that fits entirely
in a single register. */
+ /* On 32 bit ABI's the float_argreg is further adjusted
+ above to ensure that it is even register aligned. */
CORE_ADDR regval = extract_address (val, len);
write_register (float_argreg++, regval);
if (!MIPS_EABI)
{
+ /* CAGNEY: 32 bit MIPS ABI's always reserve two FP
+ registers for each argument. The below is (my
+ guess) to ensure that the corresponding integer
+ register has reserved the same space. */
write_register (argreg, regval);
argreg += FP_REGISTER_DOUBLE ? 1 : 2;
}
if (read_relative_register_raw_bytes (regnum, raw_buffer))
error ("can't read register %d (%s)", regnum, REGISTER_NAME (regnum));
/* pad small registers */
- for (byte = 0; byte < (MIPS_REGSIZE - REGISTER_RAW_SIZE (regnum)); byte++)
+ for (byte = 0; byte < (MIPS_REGSIZE - REGISTER_VIRTUAL_SIZE (regnum)); byte++)
printf_filtered (" ");
/* Now print the register value in hex, endian order. */
if (TARGET_BYTE_ORDER == BIG_ENDIAN)
- for (byte = 0; byte < REGISTER_RAW_SIZE (regnum); byte++)
+ for (byte = REGISTER_RAW_SIZE (regnum) - REGISTER_VIRTUAL_SIZE (regnum);
+ byte < REGISTER_RAW_SIZE (regnum);
+ byte++)
printf_filtered ("%02x", (unsigned char) raw_buffer[byte]);
else
- for (byte = REGISTER_RAW_SIZE (regnum) - 1; byte >= 0; byte--)
+ for (byte = REGISTER_VIRTUAL_SIZE (regnum) - 1;
+ byte >= 0;
+ byte--)
printf_filtered ("%02x", (unsigned char) raw_buffer[byte]);
printf_filtered (" ");
col++;
Use \"on\" to enable the masking, and \"off\" to disable it.\n\
Without an argument, zeroing of upper address bits is enabled.", &setlist),
&showlist);
+
+ /* Allow the user to control the size of 32 bit registers within the
+ raw remote packet. */
+ add_show_from_set (add_set_cmd ("remote-mips64-transfers-32bit-regs",
+ class_obscure,
+ var_boolean,
+ (char *)&mips64_transfers_32bit_regs_p, "\
+Set compatibility with MIPS targets that transfers 32 and 64 bit quantities.\n\
+Use \"on\" to enable backward compatibility with older MIPS 64 GDB+target\n\
+that would transfer 32 bits for some registers (e.g. SR, FSR) and\n\
+64 bits for others. Use \"off\" to disable compatibility mode",
+ &setlist),
+ &showlist);
}
projects / deliverable / binutils-gdb.git / blobdiff