3 * JIT trampoline code for Sparc
6 * Mark Crichton (crichton@gimp.org)
7 * Dietmar Maurer (dietmar@ximian.com)
9 * (C) 2003 Ximian, Inc.
15 #include <mono/arch/sparc/sparc-codegen.h>
16 #include <mono/metadata/appdomain.h>
17 #include <mono/metadata/marshal.h>
18 #include <mono/metadata/tabledefs.h>
21 #include "mini-sparc.h"
22 #include "jit-icalls.h"
23 #include "mono/utils/mono-tls-inline.h"
26 * mono_arch_get_unbox_trampoline:
28 * @addr: pointer to native code for @m
30 * when value type methods are called through the vtable we need to unbox the
31 * this argument. This method returns a pointer to a trampoline which does
32 * unboxing before calling the method
35 mono_arch_get_unbox_trampoline (MonoMethod
*m
, gpointer addr
)
40 start
= code
= mono_domain_code_reserve (mono_domain_get (), 36);
42 /* This executes in the context of the caller, hence o0 */
43 sparc_add_imm (code
, 0, sparc_o0
, MONO_ABI_SIZEOF (MonoObject
), sparc_o0
);
49 sparc_set (code
, addr
, reg
);
50 sparc_jmpl (code
, reg
, sparc_g0
, sparc_g0
);
53 g_assert ((code
- start
) <= 36);
55 mono_arch_flush_icache (start
, code
- start
);
56 MONO_PROFILER_RAISE (jit_code_buffer
, (start
, code
- start
, MONO_PROFILER_CODE_BUFFER_UNBOX_TRAMPOLINE
, m
));
58 mono_tramp_info_register (mono_tramp_info_create (NULL
, start
, code
- start
, NULL
, NULL
), NULL
);
64 mono_arch_patch_callsite (guint8
*method_start
, guint8
*code
, guint8
*addr
)
66 if (sparc_inst_op (*(guint32
*)code
) == 0x1) {
67 sparc_call_simple (code
, (guint8
*)addr
- (guint8
*)code
);
72 mono_arch_patch_plt_entry (guint8
*code
, gpointer
*got
, host_mgreg_t
*regs
, guint8
*addr
)
74 g_assert_not_reached ();
78 mono_arch_create_generic_trampoline (MonoTrampolineType tramp_type
, MonoTrampInfo
**info
, gboolean aot
)
80 guint8
*buf
, *code
, *tramp_addr
;
81 guint32 lmf_offset
, regs_offset
, method_reg
, i
;
87 if (tramp_type
== MONO_TRAMPOLINE_JUMP
)
92 code
= buf
= mono_global_codeman_reserve (1024);
94 sparc_save_imm (code
, sparc_sp
, -1608, sparc_sp
);
97 method_reg
= sparc_g4
;
99 method_reg
= sparc_g1
;
102 regs_offset
= MONO_SPARC_STACK_BIAS
+ 1000;
104 /* Save r1 needed by the IMT code */
105 sparc_sti_imm (code
, sparc_g1
, sparc_sp
, regs_offset
+ (sparc_g1
* sizeof (target_mgreg_t
)));
108 * sparc_g5 contains the return address, the trampoline argument is stored in the
109 * instruction stream after the call.
111 sparc_ld_imm (code
, sparc_g5
, 8, method_reg
);
114 /* Save fp regs since they are not preserved by calls */
115 for (i
= 0; i
< 16; i
++)
116 sparc_stdf_imm (code
, sparc_f0
+ (i
* 2), sparc_sp
, MONO_SPARC_STACK_BIAS
+ 320 + (i
* 8));
119 /* We receive the method address in %r1, so save it here */
120 sparc_sti_imm (code
, method_reg
, sparc_sp
, MONO_SPARC_STACK_BIAS
+ 200);
122 /* Save lmf since compilation can raise exceptions */
123 lmf_offset
= MONO_SPARC_STACK_BIAS
- sizeof (MonoLMF
);
125 /* Save the data for the parent (managed) frame */
128 sparc_sti_imm (code
, sparc_i7
, sparc_fp
, lmf_offset
+ G_STRUCT_OFFSET (MonoLMF
, ip
));
130 sparc_sti_imm (code
, sparc_fp
, sparc_fp
, lmf_offset
+ G_STRUCT_OFFSET (MonoLMF
, sp
));
132 /* Load previous fp from the saved register window */
134 sparc_ldi_imm (code
, sparc_fp
, MONO_SPARC_STACK_BIAS
+ (sparc_i6
- 16) * sizeof (target_mgreg_t
), sparc_o7
);
135 sparc_sti_imm (code
, sparc_o7
, sparc_fp
, lmf_offset
+ G_STRUCT_OFFSET (MonoLMF
, ebp
));
137 sparc_sti_imm (code
, method_reg
, sparc_fp
, lmf_offset
+ G_STRUCT_OFFSET (MonoLMF
, method
));
139 sparc_set (code
, mono_get_lmf_addr
, sparc_o7
);
140 sparc_jmpl (code
, sparc_o7
, sparc_g0
, sparc_o7
);
143 code
= mono_sparc_emit_save_lmf (code
, lmf_offset
);
146 /* Load all registers of the caller into a table inside this frame */
147 /* first the out registers */
148 for (i
= 0; i
< 8; ++i
)
149 sparc_sti_imm (code
, sparc_i0
+ i
, sparc_sp
, regs_offset
+ ((sparc_o0
+ i
) * sizeof (target_mgreg_t
)));
150 /* then the in+local registers */
151 for (i
= 0; i
< 16; i
++) {
152 sparc_ldi_imm (code
, sparc_fp
, MONO_SPARC_STACK_BIAS
+ (i
* sizeof (target_mgreg_t
)), sparc_o7
);
153 sparc_sti_imm (code
, sparc_o7
, sparc_sp
, regs_offset
+ ((sparc_l0
+ i
) * sizeof (target_mgreg_t
)));
157 tramp_addr
= mono_get_trampoline_func (tramp_type
);
158 sparc_ldi_imm (code
, sparc_sp
, MONO_SPARC_STACK_BIAS
+ 200, sparc_o2
);
159 /* pass address of register table as third argument */
160 sparc_add_imm (code
, FALSE
, sparc_sp
, regs_offset
, sparc_o0
);
161 sparc_set (code
, tramp_addr
, sparc_o7
);
162 /* set %o1 to caller address */
164 sparc_mov_reg_reg (code
, sparc_i7
, sparc_o1
);
166 sparc_set (code
, 0, sparc_o1
);
167 sparc_set (code
, 0, sparc_o3
);
168 sparc_jmpl (code
, sparc_o7
, sparc_g0
, sparc_o7
);
172 sparc_sti_imm (code
, sparc_o0
, sparc_sp
, MONO_SPARC_STACK_BIAS
+ 304);
174 /* Check for thread interruption */
175 sparc_set (code
, (guint8
*)mono_interruption_checkpoint_from_trampoline_deprecated
, sparc_o7
);
176 sparc_jmpl (code
, sparc_o7
, sparc_g0
, sparc_o7
);
180 code
= mono_sparc_emit_restore_lmf (code
, lmf_offset
);
183 sparc_ldi_imm (code
, sparc_sp
, MONO_SPARC_STACK_BIAS
+ 304, sparc_o0
);
187 for (i
= 0; i
< 16; i
++)
188 sparc_lddf_imm (code
, sparc_sp
, MONO_SPARC_STACK_BIAS
+ 320 + (i
* 8), sparc_f0
+ (i
* 2));
191 sparc_jmpl (code
, sparc_o0
, sparc_g0
, sparc_g0
);
193 /* restore previous frame in delay slot */
194 sparc_restore_simple (code
);
200 sparc_save_imm (code, sparc_sp, -608, sparc_sp);
202 sparc_call_simple (code, 16);
204 sparc_rett_simple (code);
207 sparc_save_imm (code, sparc_sp, -608, sparc_sp);
209 tramp_addr = &sparc_magic_trampoline;
210 sparc_call_simple (code, tramp_addr - code);
212 sparc_rett_simple (code);
217 g_assert ((code
- buf
) <= 512);
219 mono_arch_flush_icache (buf
, code
- buf
);
220 MONO_PROFILER_RAISE (jit_code_buffer
, (buf
, code
- buf
, MONO_PROFILER_CODE_BUFFER_HELPER
, NULL
));
225 #define TRAMPOLINE_SIZE (SPARC_SET_MAX_SIZE + 3)
228 mono_arch_create_specific_trampoline (gpointer arg1
, MonoTrampolineType tramp_type
, MonoDomain
*domain
, guint32
*code_len
)
230 guint32
*code
, *buf
, *tramp
;
232 tramp
= mono_get_trampoline_code (tramp_type
);
234 code
= buf
= mono_domain_code_reserve (domain
, TRAMPOLINE_SIZE
* 4);
236 /* We have to use g5 here because there is no other free register */
237 sparc_set (code
, tramp
, sparc_g5
);
238 sparc_jmpl (code
, sparc_g5
, sparc_g0
, sparc_g5
);
241 g_assert_not_reached ();
243 *code
= (guint32
)arg1
;
247 g_assert ((code
- buf
) <= TRAMPOLINE_SIZE
);
250 *code_len
= (code
- buf
);
252 mono_arch_flush_icache ((guint8
*)buf
, (code
- buf
));
253 MONO_PROFILER_RAISE (jit_code_buffer
, (buf
, code
- buf
, MONO_PROFILER_CODE_BUFFER_SPECIFIC_TRAMPOLINE
, mono_get_generic_trampoline_simple_name (tramp_type
)));
259 mono_arch_create_rgctx_lazy_fetch_trampoline (guint32 slot
, MonoTrampInfo
**info
, gboolean aot
)
261 /* FIXME: implement! */
262 g_assert_not_reached ();