[PATCH v2] gdbserver/s390: Add support for compiled agent expressions.

Marcin Kościelnicki
2016-03-04T10:41:22Z

These sequences assume a z900+ CPU, like the rest of fast tracepoint
support.

gdb/gdbserver/ChangeLog:

* linux-s390-low.c (add_insns): New function.
(s390_emit_prologue): New function.
(s390_emit_epilogue): New function.
(s390_emit_add): New function.
(s390_emit_sub): New function.
(s390_emit_mul): New function.
(s390_emit_lsh): New function.
(s390_emit_rsh_signed): New function.
(s390_emit_rsh_unsigned): New function.
(s390_emit_ext): New function.
(s390_emit_log_not): New function.
(s390_emit_bit_and): New function.
(s390_emit_bit_or): New function.
(s390_emit_bit_xor): New function.
(s390_emit_bit_not): New function.
(s390_emit_equal): New function.
(s390_emit_less_signed): New function.
(s390_emit_less_unsigned): New function.
(s390_emit_ref): New function.
(s390_emit_if_goto): New function.
(s390_emit_goto): New function.
(s390_write_goto_address): New function.
(s390_emit_litpool): New function.
(s390_emit_const): New function.
(s390_emit_call): New function.
(s390_emit_reg): New function.
(s390_emit_pop): New function.
(s390_emit_stack_flush): New function.
(s390_emit_zero_ext): New function.
(s390_emit_swap): New function.
(s390_emit_stack_adjust): New function.
(s390_emit_set_r2): New function.
(s390_emit_int_call_1): New function.
(s390_emit_void_call_2): New function.
(s390_emit_eq_goto): New function.
(s390_emit_ne_goto): New function.
(s390_emit_lt_goto): New function.
(s390_emit_le_goto): New function.
(s390_emit_gt_goto): New function.
(s390_emit_ge_goto): New function.
(s390x_emit_prologue): New function.
(s390x_emit_epilogue): New function.
(s390x_emit_add): New function.
(s390x_emit_sub): New function.
(s390x_emit_mul): New function.
(s390x_emit_lsh): New function.
(s390x_emit_rsh_signed): New function.
(s390x_emit_rsh_unsigned): New function.
(s390x_emit_ext): New function.
(s390x_emit_log_not): New function.
(s390x_emit_bit_and): New function.
(s390x_emit_bit_or): New function.
(s390x_emit_bit_xor): New function.
(s390x_emit_bit_not): New function.
(s390x_emit_equal): New function.
(s390x_emit_less_signed): New function.
(s390x_emit_less_unsigned): New function.
(s390x_emit_ref): New function.
(s390x_emit_if_goto): New function.
(s390x_emit_const): New function.
(s390x_emit_call): New function.
(s390x_emit_reg): New function.
(s390x_emit_pop): New function.
(s390x_emit_stack_flush): New function.
(s390x_emit_zero_ext): New function.
(s390x_emit_swap): New function.
(s390x_emit_stack_adjust): New function.
(s390x_emit_int_call_1): New function.
(s390x_emit_void_call_2): New function.
(s390x_emit_eq_goto): New function.
(s390x_emit_ne_goto): New function.
(s390x_emit_lt_goto): New function.
(s390x_emit_le_goto): New function.
(s390x_emit_gt_goto): New function.
(s390x_emit_ge_goto): New function.
(s390_emit_ops): New function.
(struct linux_target_ops): Fill in emit_ops hook.
---
Updated version: deduplicated s390_emit_goto with s390x_emit_goto,
documentation comments, indent fixes.

gdb/gdbserver/ChangeLog | 80 +++
gdb/gdbserver/linux-s390-low.c | 1346 +++++++++++++++++++++++++++++++++++++++-
2 files changed, 1425 insertions(+), 1 deletion(-)

diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 6ff94b1..df010ab 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,5 +1,85 @@
2016-03-04 Marcin KoÅ›cielnicki <koriakin@0x04.net>

+ * linux-s390-low.c (add_insns): New function.
+ (s390_emit_prologue): New function.
+ (s390_emit_epilogue): New function.
+ (s390_emit_add): New function.
+ (s390_emit_sub): New function.
+ (s390_emit_mul): New function.
+ (s390_emit_lsh): New function.
+ (s390_emit_rsh_signed): New function.
+ (s390_emit_rsh_unsigned): New function.
+ (s390_emit_ext): New function.
+ (s390_emit_log_not): New function.
+ (s390_emit_bit_and): New function.
+ (s390_emit_bit_or): New function.
+ (s390_emit_bit_xor): New function.
+ (s390_emit_bit_not): New function.
+ (s390_emit_equal): New function.
+ (s390_emit_less_signed): New function.
+ (s390_emit_less_unsigned): New function.
+ (s390_emit_ref): New function.
+ (s390_emit_if_goto): New function.
+ (s390_emit_goto): New function.
+ (s390_write_goto_address): New function.
+ (s390_emit_litpool): New function.
+ (s390_emit_const): New function.
+ (s390_emit_call): New function.
+ (s390_emit_reg): New function.
+ (s390_emit_pop): New function.
+ (s390_emit_stack_flush): New function.
+ (s390_emit_zero_ext): New function.
+ (s390_emit_swap): New function.
+ (s390_emit_stack_adjust): New function.
+ (s390_emit_set_r2): New function.
+ (s390_emit_int_call_1): New function.
+ (s390_emit_void_call_2): New function.
+ (s390_emit_eq_goto): New function.
+ (s390_emit_ne_goto): New function.
+ (s390_emit_lt_goto): New function.
+ (s390_emit_le_goto): New function.
+ (s390_emit_gt_goto): New function.
+ (s390_emit_ge_goto): New function.
+ (s390x_emit_prologue): New function.
+ (s390x_emit_epilogue): New function.
+ (s390x_emit_add): New function.
+ (s390x_emit_sub): New function.
+ (s390x_emit_mul): New function.
+ (s390x_emit_lsh): New function.
+ (s390x_emit_rsh_signed): New function.
+ (s390x_emit_rsh_unsigned): New function.
+ (s390x_emit_ext): New function.
+ (s390x_emit_log_not): New function.
+ (s390x_emit_bit_and): New function.
+ (s390x_emit_bit_or): New function.
+ (s390x_emit_bit_xor): New function.
+ (s390x_emit_bit_not): New function.
+ (s390x_emit_equal): New function.
+ (s390x_emit_less_signed): New function.
+ (s390x_emit_less_unsigned): New function.
+ (s390x_emit_ref): New function.
+ (s390x_emit_if_goto): New function.
+ (s390x_emit_const): New function.
+ (s390x_emit_call): New function.
+ (s390x_emit_reg): New function.
+ (s390x_emit_pop): New function.
+ (s390x_emit_stack_flush): New function.
+ (s390x_emit_zero_ext): New function.
+ (s390x_emit_swap): New function.
+ (s390x_emit_stack_adjust): New function.
+ (s390x_emit_int_call_1): New function.
+ (s390x_emit_void_call_2): New function.
+ (s390x_emit_eq_goto): New function.
+ (s390x_emit_ne_goto): New function.
+ (s390x_emit_lt_goto): New function.
+ (s390x_emit_le_goto): New function.
+ (s390x_emit_gt_goto): New function.
+ (s390x_emit_ge_goto): New function.
+ (s390_emit_ops): New function.
+ (struct linux_target_ops): Fill in emit_ops hook.
+
+2016-01-24 Marcin KoÅ›cielnicki <koriakin@0x04.net>
+
* Makefile.in: Add s390 IPA files.
* configure.srv: Build IPA for s390.
* linux-s390-ipa.c: New file.
diff --git a/gdb/gdbserver/linux-s390-low.c b/gdb/gdbserver/linux-s390-low.c
index 146e4c9..f0d76f0 100644
--- a/gdb/gdbserver/linux-s390-low.c
+++ b/gdb/gdbserver/linux-s390-low.c
@@ -22,6 +22,8 @@
#include "server.h"
#include "linux-low.h"
#include "elf/common.h"
+#include "ax.h"
+#include "tracepoint.h"

#include <asm/ptrace.h>
#include "nat/gdb_ptrace.h"
@@ -1397,6 +1399,1348 @@ s390_get_ipa_tdesc_idx (void)
return 0;
}

+/* Appends given buffer to current_insn_ptr in the target. */
+
+static void
+add_insns (const unsigned char *start, int len)
+{
+ CORE_ADDR buildaddr = current_insn_ptr;
+
+ if (debug_threads)
+ debug_printf ("Adding %d bytes of insn at %s\n",
+ len, paddress (buildaddr));
+
+ append_insns (&buildaddr, len, start);
+ current_insn_ptr = buildaddr;
+}
+
+/* Register usage in emit:
+
+ - %r0, %r1: temp
+ - %r2: top of stack (high word for 31-bit)
+ - %r3: low word of top of stack (for 31-bit)
+ - %r4, %r5: temp
+ - %r6, %r7, %r8: don't use
+ - %r9: saved arg1
+ - %r10: saved arg2
+ - %r11: frame pointer
+ - %r12: saved top of stack for void_call_2 (high word for 31-bit)
+ - %r13: low word of saved top of stack (for 31-bit)
+ - %r14: return address for calls
+ - %r15: stack pointer
+
+ */
+
+/* The "emit_prologue" emit_ops method for s390. */
+
+static void
+s390_emit_prologue (void)
+{
+ static const unsigned char buf[] = {
+ 0x90, 0x9f, 0xf0, 0x24, /* stm %r9, %r15, 0x24(%r15) */
+ 0x18, 0x92, /* lr %r9, %r2 */
+ 0x18, 0xa3, /* lr %r10, %r3 */
+ 0x18, 0xbf, /* lr %r11, %r15 */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_epilogue" emit_ops method for s390. */
+
+static void
+s390_emit_epilogue (void)
+{
+ static const unsigned char buf[] = {
+ 0x90, 0x23, 0xa0, 0x00, /* stm %r2, %r3, 0(%r10) */
+ 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
+ 0x98, 0x9f, 0xb0, 0x24, /* lm %r9, %r15, 0x24(%r11) */
+ 0x07, 0xfe, /* br %r14 */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_add" emit_ops method for s390. */
+
+static void
+s390_emit_add (void)
+{
+ static const unsigned char buf[] = {
+ 0x5e, 0x30, 0xf0, 0x04, /* al %r3, 4(%r15) */
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x98, /* al %r2, 0(%r15) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_sub" emit_ops method for s390. */
+
+static void
+s390_emit_sub (void)
+{
+ static const unsigned char buf[] = {
+ 0x98, 0x45, 0xf0, 0x00, /* lm %r4, %r5, 0(%r15) */
+ 0x1f, 0x53, /* slr %r5, %r3 */
+ 0xb9, 0x99, 0x00, 0x42, /* slbr %r4, %r2 */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ 0x18, 0x35, /* lr %r3, %r5 */
+ 0x18, 0x24, /* lr %r2, %r4 */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_mul" emit_ops method for s390. */
+
+static void
+s390_emit_mul (void)
+{
+ emit_error = 1;
+}
+
+/* The "emit_lsh" emit_ops method for s390. */
+
+static void
+s390_emit_lsh (void)
+{
+ static const unsigned char buf[] = {
+ 0x18, 0x43, /* lr %r4, %r3 */
+ 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */
+ 0x8d, 0x20, 0x40, 0x00, /* sldl %r2, 0(%r4) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_rsh_signed" emit_ops method for s390. */
+
+static void
+s390_emit_rsh_signed (void)
+{
+ static const unsigned char buf[] = {
+ 0x18, 0x43, /* lr %r4, %r3 */
+ 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */
+ 0x8e, 0x20, 0x40, 0x00, /* srda %r2, 0(%r4) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_rsh_unsigned" emit_ops method for s390. */
+
+static void
+s390_emit_rsh_unsigned (void)
+{
+ static const unsigned char buf[] = {
+ 0x18, 0x43, /* lr %r4, %r3 */
+ 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */
+ 0x8c, 0x20, 0x40, 0x00, /* srdl %r2, 0(%r4) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_ext" emit_ops method for s390. */
+
+static void
+s390_emit_ext (int arg)
+{
+ unsigned char buf[] = {
+ 0x8d, 0x20, 0x00, 64-arg, /* sldl %r2, <64-arg> */
+ 0x8e, 0x20, 0x00, 64-arg, /* srda %r2, <64-arg> */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_log_not" emit_ops method for s390. */
+
+static void
+s390_emit_log_not (void)
+{
+ static const unsigned char buf[] = {
+ 0x16, 0x23, /* or %r2, %r3 */
+ 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
+ 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */
+ 0xa7, 0x74, 0x00, 0x04, /* jne .Lskip */
+ 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */
+ /* .Lskip: */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_bit_and" emit_ops method for s390. */
+
+static void
+s390_emit_bit_and (void)
+{
+ static const unsigned char buf[] = {
+ 0x54, 0x20, 0xf0, 0x00, /* n %r2, 0(%r15) */
+ 0x54, 0x30, 0xf0, 0x04, /* n %r3, 4(%r15) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_bit_or" emit_ops method for s390. */
+
+static void
+s390_emit_bit_or (void)
+{
+ static const unsigned char buf[] = {
+ 0x56, 0x20, 0xf0, 0x00, /* o %r2, 0(%r15) */
+ 0x56, 0x30, 0xf0, 0x04, /* o %r3, 4(%r15) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_bit_xor" emit_ops method for s390. */
+
+static void
+s390_emit_bit_xor (void)
+{
+ static const unsigned char buf[] = {
+ 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */
+ 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_bit_not" emit_ops method for s390. */
+
+static void
+s390_emit_bit_not (void)
+{
+ static const unsigned char buf[] = {
+ 0xa7, 0x48, 0xff, 0xff, /* lhi %r4, -1 */
+ 0x17, 0x24, /* xr %r2, %r4 */
+ 0x17, 0x34, /* xr %r3, %r4 */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_equal" emit_ops method for s390. */
+
+static void
+s390_emit_equal (void)
+{
+ s390_emit_bit_xor ();
+ s390_emit_log_not ();
+}
+
+/* The "emit_less_signed" emit_ops method for s390. */
+
+static void
+s390_emit_less_signed (void)
+{
+ static const unsigned char buf[] = {
+ 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */
+ 0xa7, 0x24, 0x00, 0x0c, /* jh .Lless */
+ 0xa7, 0x44, 0x00, 0x06, /* jl .Lhigh */
+ 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */
+ 0xa7, 0x24, 0x00, 0x06, /* jh .Lless */
+ /* .Lhigh: */
+ 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */
+ 0xa7, 0xf4, 0x00, 0x04, /* j .Lend */
+ /* .Lless: */
+ 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */
+ /* .Lend: */
+ 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_less_unsigned" emit_ops method for s390. */
+
+static void
+s390_emit_less_unsigned (void)
+{
+ static const unsigned char buf[] = {
+ 0x55, 0x20, 0xf0, 0x00, /* cl %r2, 0(%r15) */
+ 0xa7, 0x24, 0x00, 0x0c, /* jh .Lless */
+ 0xa7, 0x44, 0x00, 0x06, /* jl .Lhigh */
+ 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */
+ 0xa7, 0x24, 0x00, 0x06, /* jh .Lless */
+ /* .Lhigh: */
+ 0xa7, 0x38, 0x00, 0x00, /* lhi %r3, 0 */
+ 0xa7, 0xf4, 0x00, 0x04, /* j .Lend */
+ /* .Lless: */
+ 0xa7, 0x38, 0x00, 0x01, /* lhi %r3, 1 */
+ /* .Lend: */
+ 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_ref" emit_ops method for s390. */
+
+static void
+s390_emit_ref (int size)
+{
+ static const unsigned char buf1[] = {
+ 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
+ 0x43, 0x30, 0x30, 0x00, /* ic %r3, 0(%r3) */
+ };
+ static const unsigned char buf2[] = {
+ 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
+ 0x48, 0x30, 0x30, 0x00, /* lh %r3, 0(%r3) */
+ };
+ static const unsigned char buf4[] = {
+ 0xa7, 0x28, 0x00, 0x00, /* lhi %r2, 0 */
+ 0x58, 0x30, 0x30, 0x00, /* l %r3, 0(%r3) */
+ };
+ static const unsigned char buf8[] = {
+ 0x98, 0x23, 0x30, 0x00, /* lm %r2, %r3, 0(%r3) */
+ };
+ switch (size)
+ {
+ case 1:
+ add_insns (buf1, sizeof buf1);
+ break;
+ case 2:
+ add_insns (buf2, sizeof buf2);
+ break;
+ case 4:
+ add_insns (buf4, sizeof buf4);
+ break;
+ case 8:
+ add_insns (buf8, sizeof buf8);
+ break;
+ default:
+ emit_error = 1;
+ }
+}
+
+/* The "emit_if_goto" emit_ops method for s390. */
+
+static void
+s390_emit_if_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0x16, 0x23, /* or %r2, %r3 */
+ 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00 /* jgne <fillme> */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 12;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_goto" emit_ops method for s390 and s390x. */
+
+static void
+s390_emit_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 2;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "write_goto_address" emit_ops method for s390 and s390x. */
+
+static void
+s390_write_goto_address (CORE_ADDR from, CORE_ADDR to, int size)
+{
+ long diff = ((long) (to - (from - 2))) / 2;
+ int sdiff = diff;
+ unsigned char buf[sizeof sdiff];
+
+ /* We're only doing 4-byte sizes at the moment. */
+ if (size != sizeof sdiff || sdiff != diff)
+ {
+ emit_error = 1;
+ return;
+ }
+
+ memcpy (buf, &sdiff, sizeof sdiff);
+ write_inferior_memory (from, buf, sizeof sdiff);
+}
+
+/* Preparation for emitting a literal pool of given size. Loads the address
+ of the pool into %r1, and jumps over it. Called should emit the pool data
+ immediately afterwards. Used for both s390 and s390x. */
+
+static void
+s390_emit_litpool (int size)
+{
+ static const unsigned char nop[] = {
+ 0x07, 0x07,
+ };
+ unsigned char buf[] = {
+ 0xa7, 0x15, 0x00, (size + 4) / 2, /* bras %r1, .Lend+size */
+ /* .Lend: */
+ };
+ if (size == 4)
+ {
+ /* buf needs to start at even halfword for litpool to be aligned */
+ if (current_insn_ptr & 2)
+ add_insns (nop, sizeof nop);
+ }
+ else
+ {
+ while ((current_insn_ptr & 6) != 4)
+ add_insns (nop, sizeof nop);
+ }
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_const" emit_ops method for s390. */
+
+static void
+s390_emit_const (LONGEST num)
+{
+ unsigned long long n = num;
+ unsigned char buf_s[] = {
+ 0xa7, 0x38, num >> 8, num, /* lhi %r3, <num> */
+ 0x17, 0x22, /* xr %r2, %r2 */
+ };
+ static const unsigned char buf_l[] = {
+ 0x98, 0x23, 0x10, 0x00, /* lm %r2, %r3, 0(%r1) */
+ };
+ if (num < 0x8000 && num >= 0)
+ {
+ add_insns (buf_s, sizeof buf_s);
+ }
+ else
+ {
+ s390_emit_litpool (8);
+ add_insns ((unsigned char *) &n, sizeof n);
+ add_insns (buf_l, sizeof buf_l);
+ }
+}
+
+/* The "emit_call" emit_ops method for s390. */
+
+static void
+s390_emit_call (CORE_ADDR fn)
+{
+ unsigned int n = fn;
+ static const unsigned char buf[] = {
+ 0x58, 0x10, 0x10, 0x00, /* l %r1, 0(%r1) */
+ 0xa7, 0xfa, 0xff, 0xa0, /* ahi %r15, -0x60 */
+ 0x0d, 0xe1, /* basr %r14, %r1 */
+ 0xa7, 0xfa, 0x00, 0x60, /* ahi %r15, 0x60 */
+ };
+ s390_emit_litpool (4);
+ add_insns ((unsigned char *) &n, sizeof n);
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_reg" emit_ops method for s390. */
+
+static void
+s390_emit_reg (int reg)
+{
+ unsigned char bufpre[] = {
+ 0x18, 0x29, /* lr %r2, %r9 */
+ 0xa7, 0x38, reg >> 8, reg, /* lhi %r3, <reg> */
+ };
+ add_insns (bufpre, sizeof bufpre);
+ s390_emit_call (get_raw_reg_func_addr ());
+}
+
+/* The "emit_pop" emit_ops method for s390. */
+
+static void
+s390_emit_pop (void)
+{
+ static const unsigned char buf[] = {
+ 0x98, 0x23, 0xf0, 0x00, /* lm %r2, %r3, 0(%r15) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_stack_flush" emit_ops method for s390. */
+
+static void
+s390_emit_stack_flush (void)
+{
+ static const unsigned char buf[] = {
+ 0xa7, 0xfa, 0xff, 0xf8, /* ahi %r15, -8 */
+ 0x90, 0x23, 0xf0, 0x00, /* stm %r2, %r3, 0(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_zero_ext" emit_ops method for s390. */
+
+static void
+s390_emit_zero_ext (int arg)
+{
+ unsigned char buf[] = {
+ 0x8d, 0x20, 0x00, 64-arg, /* sldl %r2, <64-arg> */
+ 0x8c, 0x20, 0x00, 64-arg, /* srdl %r2, <64-arg> */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_swap" emit_ops method for s390. */
+
+static void
+s390_emit_swap (void)
+{
+ static const unsigned char buf[] = {
+ 0x98, 0x45, 0xf0, 0x00, /* lm %r4, %r5, 0(%r15) */
+ 0x90, 0x23, 0xf0, 0x00, /* stm %r2, %r3, 0(%r15) */
+ 0x18, 0x24, /* lr %r2, %r4 */
+ 0x18, 0x35, /* lr %r3, %r5 */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_stack_adjust" emit_ops method for s390. */
+
+static void
+s390_emit_stack_adjust (int n)
+{
+ unsigned char buf[] = {
+ 0xa7, 0xfa, n * 8 >> 8, n * 8, /* ahi %r15, 8*n */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* Sets %r2 to a 32-bit constant. */
+
+static void
+s390_emit_set_r2 (int arg1)
+{
+ unsigned char buf_s[] = {
+ 0xa7, 0x28, arg1 >> 8, arg1, /* lhi %r2, <arg1> */
+ };
+ static const unsigned char buf_l[] = {
+ 0x58, 0x20, 0x10, 0x00, /* l %r2, 0(%r1) */
+ };
+ if (arg1 < 0x8000 && arg1 >= -0x8000)
+ {
+ add_insns (buf_s, sizeof buf_s);
+ }
+ else
+ {
+ s390_emit_litpool (4);
+ add_insns ((unsigned char *) &arg1, sizeof arg1);
+ add_insns (buf_l, sizeof buf_l);
+ }
+}
+
+/* The "emit_int_call_1" emit_ops method for s390. */
+
+static void
+s390_emit_int_call_1 (CORE_ADDR fn, int arg1)
+{
+ /* FN's prototype is `LONGEST(*fn)(int)'. */
+ s390_emit_set_r2 (arg1);
+ s390_emit_call (fn);
+}
+
+/* The "emit_void_call_2" emit_ops method for s390. */
+
+static void
+s390_emit_void_call_2 (CORE_ADDR fn, int arg1)
+{
+ /* FN's prototype is `void(*fn)(int,LONGEST)'. */
+ static const unsigned char buf[] = {
+ 0x18, 0xc2, /* lr %r12, %r2 */
+ 0x18, 0xd3, /* lr %r13, %r3 */
+ 0x18, 0x43, /* lr %r4, %r3 */
+ 0x18, 0x32, /* lr %r3, %r2 */
+ };
+ static const unsigned char buf2[] = {
+ 0x18, 0x2c, /* lr %r2, %r12 */
+ 0x18, 0x3d, /* lr %r3, %r13 */
+ };
+ add_insns (buf, sizeof buf);
+ s390_emit_set_r2 (arg1);
+ s390_emit_call (fn);
+ add_insns (buf2, sizeof buf2);
+}
+
+/* The "emit_eq_goto" emit_ops method for s390. */
+
+void
+s390_emit_eq_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */
+ 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */
+ 0x16, 0x23, /* or %r2, %r3 */
+ 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xc0, 0x84, 0x00, 0x00, 0x00, 0x00, /* jge <fillme> */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 20;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_ne_goto" emit_ops method for s390. */
+
+void
+s390_emit_ne_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0x57, 0x20, 0xf0, 0x00, /* x %r2, 0(%r15) */
+ 0x57, 0x30, 0xf0, 0x04, /* x %r3, 4(%r15) */
+ 0x16, 0x23, /* or %r2, %r3 */
+ 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 20;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_lt_goto" emit_ops method for s390. */
+
+void
+s390_emit_lt_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */
+ 0xa7, 0x24, 0x00, 0x0e, /* jh .Ltrue */
+ 0xa7, 0x44, 0x00, 0x06, /* jl .Lfalse */
+ 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */
+ 0xa7, 0x24, 0x00, 0x08, /* jh .Ltrue */
+ /* .Lfalse: */
+ 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */
+ /* .Ltrue: */
+ 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */
+ /* .Lend: */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 42;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_le_goto" emit_ops method for s390. */
+
+void
+s390_emit_le_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */
+ 0xa7, 0x24, 0x00, 0x0e, /* jh .Ltrue */
+ 0xa7, 0x44, 0x00, 0x06, /* jl .Lfalse */
+ 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */
+ 0xa7, 0xa4, 0x00, 0x08, /* jhe .Ltrue */
+ /* .Lfalse: */
+ 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */
+ /* .Ltrue: */
+ 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */
+ /* .Lend: */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 42;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_gt_goto" emit_ops method for s390. */
+
+void
+s390_emit_gt_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */
+ 0xa7, 0x44, 0x00, 0x0e, /* jl .Ltrue */
+ 0xa7, 0x24, 0x00, 0x06, /* jh .Lfalse */
+ 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */
+ 0xa7, 0x44, 0x00, 0x08, /* jl .Ltrue */
+ /* .Lfalse: */
+ 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */
+ /* .Ltrue: */
+ 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */
+ /* .Lend: */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 42;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_ge_goto" emit_ops method for s390. */
+
+void
+s390_emit_ge_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0x59, 0x20, 0xf0, 0x00, /* c %r2, 0(%r15) */
+ 0xa7, 0x44, 0x00, 0x0e, /* jl .Ltrue */
+ 0xa7, 0x24, 0x00, 0x06, /* jh .Lfalse */
+ 0x55, 0x30, 0xf0, 0x04, /* cl %r3, 4(%r15) */
+ 0xa7, 0xc4, 0x00, 0x08, /* jle .Ltrue */
+ /* .Lfalse: */
+ 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xa7, 0xf4, 0x00, 0x09, /* j .Lend */
+ /* .Ltrue: */
+ 0x98, 0x23, 0xf0, 0x08, /* lm %r2, %r3, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xc0, 0xf4, 0x00, 0x00, 0x00, 0x00, /* jg <fillme> */
+ /* .Lend: */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 42;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_ops" structure for s390. Named _impl to avoid name
+ collision with s390_emit_ops function. */
+
+struct emit_ops s390_emit_ops_impl =
+ {
+ s390_emit_prologue,
+ s390_emit_epilogue,
+ s390_emit_add,
+ s390_emit_sub,
+ s390_emit_mul,
+ s390_emit_lsh,
+ s390_emit_rsh_signed,
+ s390_emit_rsh_unsigned,
+ s390_emit_ext,
+ s390_emit_log_not,
+ s390_emit_bit_and,
+ s390_emit_bit_or,
+ s390_emit_bit_xor,
+ s390_emit_bit_not,
+ s390_emit_equal,
+ s390_emit_less_signed,
+ s390_emit_less_unsigned,
+ s390_emit_ref,
+ s390_emit_if_goto,
+ s390_emit_goto,
+ s390_write_goto_address,
+ s390_emit_const,
+ s390_emit_call,
+ s390_emit_reg,
+ s390_emit_pop,
+ s390_emit_stack_flush,
+ s390_emit_zero_ext,
+ s390_emit_swap,
+ s390_emit_stack_adjust,
+ s390_emit_int_call_1,
+ s390_emit_void_call_2,
+ s390_emit_eq_goto,
+ s390_emit_ne_goto,
+ s390_emit_lt_goto,
+ s390_emit_le_goto,
+ s390_emit_gt_goto,
+ s390_emit_ge_goto
+ };
+
+#ifdef __s390x__
+
+/* The "emit_prologue" emit_ops method for s390x. */
+
+static void
+s390x_emit_prologue (void)
+{
+ static const unsigned char buf[] = {
+ 0xeb, 0x9f, 0xf0, 0x48, 0x00, 0x24, /* stmg %r9, %r15, 0x48(%r15) */
+ 0xb9, 0x04, 0x00, 0x92, /* lgr %r9, %r2 */
+ 0xb9, 0x04, 0x00, 0xa3, /* lgr %r10, %r3 */
+ 0xb9, 0x04, 0x00, 0xbf, /* lgr %r11, %r15 */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_epilogue" emit_ops method for s390x. */
+
+static void
+s390x_emit_epilogue (void)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xa0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r10) */
+ 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */
+ 0xeb, 0x9f, 0xf0, 0x48, 0x00, 0x04, /* lmg %r9, %r15, 0x48(%r15) */
+ 0x07, 0xfe, /* br %r14 */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_add" emit_ops method for s390x. */
+
+static void
+s390x_emit_add (void)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x0a, /* alg %r2, 0(%r15) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_sub" emit_ops method for s390x. */
+
+static void
+s390x_emit_sub (void)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */
+ 0xb9, 0x0b, 0x00, 0x32, /* slgr %r3, %r2 */
+ 0xb9, 0x04, 0x00, 0x23, /* lgr %r2, %r3 */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_mul" emit_ops method for s390x. */
+
+static void
+s390x_emit_mul (void)
+{
+ emit_error = 1;
+}
+
+/* The "emit_lsh" emit_ops method for s390x. */
+
+static void
+s390x_emit_lsh (void)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */
+ 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0d, /* sllg %r2, %r3, 0(%r2) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_rsh_signed" emit_ops method for s390x. */
+
+static void
+s390x_emit_rsh_signed (void)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */
+ 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0a, /* srag %r2, %r3, 0(%r2) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_rsh_unsigned" emit_ops method for s390x. */
+
+static void
+s390x_emit_rsh_unsigned (void)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */
+ 0xeb, 0x23, 0x20, 0x00, 0x00, 0x0c, /* srlg %r2, %r3, 0(%r2) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_ext" emit_ops method for s390x. */
+
+static void
+s390x_emit_ext (int arg)
+{
+ unsigned char buf[] = {
+ 0xeb, 0x22, 0x00, 64-arg, 0x00, 0x0d, /* sllg %r2, %r2, <64-arg> */
+ 0xeb, 0x22, 0x00, 64-arg, 0x00, 0x0a, /* srag %r2, %r2, <64-arg> */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_log_not" emit_ops method for s390x. */
+
+static void
+s390x_emit_log_not (void)
+{
+ static const unsigned char buf[] = {
+ 0xb9, 0x00, 0x00, 0x22, /* lpgr %r2, %r2 */
+ 0xa7, 0x2b, 0xff, 0xff, /* aghi %r2, -1 */
+ 0xeb, 0x22, 0x00, 0x3f, 0x00, 0x0c, /* srlg %r2, %r2, 63 */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_bit_and" emit_ops method for s390x. */
+
+static void
+s390x_emit_bit_and (void)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x80, /* ng %r2, 0(%r15) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_bit_or" emit_ops method for s390x. */
+
+static void
+s390x_emit_bit_or (void)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x81, /* og %r2, 0(%r15) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_bit_xor" emit_ops method for s390x. */
+
+static void
+s390x_emit_bit_xor (void)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x82, /* xg %r2, 0(%r15) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_bit_not" emit_ops method for s390x. */
+
+static void
+s390x_emit_bit_not (void)
+{
+ static const unsigned char buf[] = {
+ 0xa7, 0x39, 0xff, 0xff, /* lghi %r3, -1 */
+ 0xb9, 0x82, 0x00, 0x23, /* xgr %r2, %r3 */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_equal" emit_ops method for s390x. */
+
+static void
+s390x_emit_equal (void)
+{
+ s390x_emit_bit_xor ();
+ s390x_emit_log_not ();
+}
+
+/* The "emit_less_signed" emit_ops method for s390x. */
+
+static void
+s390x_emit_less_signed (void)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
+ 0xa7, 0x29, 0x00, 0x01, /* lghi %r2, 1 */
+ 0xa7, 0x24, 0x00, 0x04, /* jh .Lend */
+ 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */
+ /* .Lend: */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_less_unsigned" emit_ops method for s390x. */
+
+static void
+s390x_emit_less_unsigned (void)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x21, /* clg %r2, 0(%r15) */
+ 0xa7, 0x29, 0x00, 0x01, /* lghi %r2, 1 */
+ 0xa7, 0x24, 0x00, 0x04, /* jh .Lend */
+ 0xa7, 0x29, 0x00, 0x00, /* lghi %r2, 0 */
+ /* .Lend: */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_ref" emit_ops method for s390x. */
+
+static void
+s390x_emit_ref (int size)
+{
+ static const unsigned char buf1[] = {
+ 0xe3, 0x20, 0x20, 0x00, 0x00, 0x90, /* llgc %r2, 0(%r2) */
+ };
+ static const unsigned char buf2[] = {
+ 0xe3, 0x20, 0x20, 0x00, 0x00, 0x91 /* llgh %r2, 0(%r2) */
+ };
+ static const unsigned char buf4[] = {
+ 0xe3, 0x20, 0x20, 0x00, 0x00, 0x16, /* llgf %r2, 0(%r2) */
+ };
+ static const unsigned char buf8[] = {
+ 0xe3, 0x20, 0x20, 0x00, 0x00, 0x04, /* lg %r2, 0(%r2) */
+ };
+ switch (size)
+ {
+ case 1:
+ add_insns (buf1, sizeof buf1);
+ break;
+ case 2:
+ add_insns (buf2, sizeof buf2);
+ break;
+ case 4:
+ add_insns (buf4, sizeof buf4);
+ break;
+ case 8:
+ add_insns (buf8, sizeof buf8);
+ break;
+ default:
+ emit_error = 1;
+ }
+}
+
+/* The "emit_if_goto" emit_ops method for s390x. */
+
+static void
+s390x_emit_if_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0xb9, 0x02, 0x00, 0x22, /* ltgr %r2, %r2 */
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x04, /* lg %r2, 0(%r15) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 16;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_const" emit_ops method for s390x. */
+
+static void
+s390x_emit_const (LONGEST num)
+{
+ unsigned long long n = num;
+ unsigned char buf_s[] = {
+ 0xa7, 0x29, num >> 8, num, /* lghi %r2, <num> */
+ };
+ static const unsigned char buf_l[] = {
+ 0xe3, 0x20, 0x10, 0x00, 0x00, 0x04, /* lg %r2, 0(%r1) */
+ };
+ if (num < 0x8000 && num >= -0x8000)
+ {
+ add_insns (buf_s, sizeof buf_s);
+ }
+ else
+ {
+ s390_emit_litpool (8);
+ add_insns ((unsigned char *) &n, sizeof n);
+ add_insns (buf_l, sizeof buf_l);
+ }
+}
+
+/* The "emit_call" emit_ops method for s390x. */
+
+static void
+s390x_emit_call (CORE_ADDR fn)
+{
+ unsigned long n = fn;
+ static const unsigned char buf[] = {
+ 0xe3, 0x10, 0x10, 0x00, 0x00, 0x04, /* lg %r1, 0(%r1) */
+ 0xa7, 0xfb, 0xff, 0x60, /* aghi %r15, -0xa0 */
+ 0x0d, 0xe1, /* basr %r14, %r1 */
+ 0xa7, 0xfb, 0x00, 0xa0, /* aghi %r15, 0xa0 */
+ };
+ s390_emit_litpool (8);
+ add_insns ((unsigned char *) &n, sizeof n);
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_reg" emit_ops method for s390x. */
+
+static void
+s390x_emit_reg (int reg)
+{
+ unsigned char buf[] = {
+ 0xb9, 0x04, 0x00, 0x29, /* lgr %r2, %r9 */
+ 0xa7, 0x39, reg >> 8, reg, /* lghi %r3, <reg> */
+ };
+ add_insns (buf, sizeof buf);
+ s390x_emit_call (get_raw_reg_func_addr ());
+}
+
+/* The "emit_pop" emit_ops method for s390x. */
+
+static void
+s390x_emit_pop (void)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x04, /* lg %r2, 0(%r15) */
+ 0x41, 0xf0, 0xf0, 0x08, /* la %r15, 8(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_stack_flush" emit_ops method for s390x. */
+
+static void
+s390x_emit_stack_flush (void)
+{
+ static const unsigned char buf[] = {
+ 0xa7, 0xfb, 0xff, 0xf8, /* aghi %r15, -8 */
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r15) */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_zero_ext" emit_ops method for s390x. */
+
+static void
+s390x_emit_zero_ext (int arg)
+{
+ unsigned char buf[] = {
+ 0xeb, 0x22, 0x00, 64-arg, 0x00, 0x0d, /* sllg %r2, %r2, <64-arg> */
+ 0xeb, 0x22, 0x00, 64-arg, 0x00, 0x0c, /* srlg %r2, %r2, <64-arg> */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_swap" emit_ops method for s390x. */
+
+static void
+s390x_emit_swap (void)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x30, 0xf0, 0x00, 0x00, 0x04, /* lg %r3, 0(%r15) */
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x24, /* stg %r2, 0(%r15) */
+ 0xb9, 0x04, 0x00, 0x23, /* lgr %r2, %r3 */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_stack_adjust" emit_ops method for s390x. */
+
+static void
+s390x_emit_stack_adjust (int n)
+{
+ unsigned char buf[] = {
+ 0xa7, 0xfb, n * 8 >> 8, n * 8, /* aghi %r15, 8*n */
+ };
+ add_insns (buf, sizeof buf);
+}
+
+/* The "emit_int_call_1" emit_ops method for s390x. */
+
+static void
+s390x_emit_int_call_1 (CORE_ADDR fn, int arg1)
+{
+ /* FN's prototype is `LONGEST(*fn)(int)'. */
+ s390x_emit_const (arg1);
+ s390x_emit_call (fn);
+}
+
+/* The "emit_void_call_2" emit_ops method for s390x. */
+
+static void
+s390x_emit_void_call_2 (CORE_ADDR fn, int arg1)
+{
+ /* FN's prototype is `void(*fn)(int,LONGEST)'. */
+ static const unsigned char buf[] = {
+ 0xb9, 0x04, 0x00, 0x32, /* lgr %r3, %r2 */
+ 0xb9, 0x04, 0x00, 0xc2, /* lgr %r12, %r2 */
+ };
+ static const unsigned char buf2[] = {
+ 0xb9, 0x04, 0x00, 0x2c, /* lgr %r2, %r12 */
+ };
+ add_insns (buf, sizeof buf);
+ s390x_emit_const (arg1);
+ s390x_emit_call (fn);
+ add_insns (buf2, sizeof buf2);
+}
+
+/* The "emit_eq_goto" emit_ops method for s390x. */
+
+void
+s390x_emit_eq_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
+ 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xc0, 0x84, 0x00, 0x00, 0x00, 0x00, /* jge <fillme> */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 18;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_ne_goto" emit_ops method for s390x. */
+
+void
+s390x_emit_ne_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
+ 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xc0, 0x74, 0x00, 0x00, 0x00, 0x00, /* jgne <fillme> */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 18;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_lt_goto" emit_ops method for s390x. */
+
+void
+s390x_emit_lt_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
+ 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xc0, 0x24, 0x00, 0x00, 0x00, 0x00, /* jgh <fillme> */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 18;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_le_goto" emit_ops method for s390x. */
+
+void
+s390x_emit_le_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
+ 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xc0, 0xa4, 0x00, 0x00, 0x00, 0x00, /* jghe <fillme> */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 18;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_gt_goto" emit_ops method for s390x. */
+
+void
+s390x_emit_gt_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
+ 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xc0, 0x44, 0x00, 0x00, 0x00, 0x00, /* jgl <fillme> */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 18;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_ge_goto" emit_ops method for s390x. */
+
+void
+s390x_emit_ge_goto (int *offset_p, int *size_p)
+{
+ static const unsigned char buf[] = {
+ 0xe3, 0x20, 0xf0, 0x00, 0x00, 0x20, /* cg %r2, 0(%r15) */
+ 0xe3, 0x20, 0xf0, 0x08, 0x00, 0x04, /* lg %r2, 8(%r15) */
+ 0x41, 0xf0, 0xf0, 0x10, /* la %r15, 16(%r15) */
+ 0xc0, 0xc4, 0x00, 0x00, 0x00, 0x00, /* jgle <fillme> */
+ };
+ add_insns (buf, sizeof buf);
+ if (offset_p)
+ *offset_p = 18;
+ if (size_p)
+ *size_p = 4;
+}
+
+/* The "emit_ops" structure for s390x. */
+
+struct emit_ops s390x_emit_ops =
+ {
+ s390x_emit_prologue,
+ s390x_emit_epilogue,
+ s390x_emit_add,
+ s390x_emit_sub,
+ s390x_emit_mul,
+ s390x_emit_lsh,
+ s390x_emit_rsh_signed,
+ s390x_emit_rsh_unsigned,
+ s390x_emit_ext,
+ s390x_emit_log_not,
+ s390x_emit_bit_and,
+ s390x_emit_bit_or,
+ s390x_emit_bit_xor,
+ s390x_emit_bit_not,
+ s390x_emit_equal,
+ s390x_emit_less_signed,
+ s390x_emit_less_unsigned,
+ s390x_emit_ref,
+ s390x_emit_if_goto,
+ s390_emit_goto,
+ s390_write_goto_address,
+ s390x_emit_const,
+ s390x_emit_call,
+ s390x_emit_reg,
+ s390x_emit_pop,
+ s390x_emit_stack_flush,
+ s390x_emit_zero_ext,
+ s390x_emit_swap,
+ s390x_emit_stack_adjust,
+ s390x_emit_int_call_1,
+ s390x_emit_void_call_2,
+ s390x_emit_eq_goto,
+ s390x_emit_ne_goto,
+ s390x_emit_lt_goto,
+ s390x_emit_le_goto,
+ s390x_emit_gt_goto,
+ s390x_emit_ge_goto
+ };
+#endif
+
+/* The "emit_ops" linux_target_ops method. */
+
+static struct emit_ops *
+s390_emit_ops (void)
+{
+#ifdef __s390x__
+ struct regcache *regcache = get_thread_regcache (current_thread, 0);
+
+ if (register_size (regcache->tdesc, 0) == 8)
+ return &s390x_emit_ops;
+ else
+#endif
+ return &s390_emit_ops_impl;
+}
+
struct linux_target_ops the_low_target = {
s390_arch_setup,
s390_regs_info,
@@ -1426,7 +2770,7 @@ struct linux_target_ops the_low_target = {
s390_supports_tracepoints,
s390_get_thread_area,
s390_install_fast_tracepoint_jump_pad,
- NULL, /* emit_ops */
+ s390_emit_ops,
s390_get_min_fast_tracepoint_insn_len,
NULL, /* supports_range_stepping */
NULL, /* breakpoint_kind_from_current_state */
--
2.7.1