1 /**
2 * \file
3 */
4
5 #ifndef __MONO_MINI_S390X_H__
6 #define __MONO_MINI_S390X_H__
7
8 #include <mono/arch/s390x/s390x-codegen.h>
9 #include <mono/utils/mono-context.h>
10 #include <signal.h>
11
12 #define MONO_ARCH_CPU_SPEC mono_s390x_cpu_desc
13
14 #define MONO_MAX_IREGS 16
15 #define MONO_MAX_FREGS 16
16
17 /*-------------------------------------------*/
18 /* Parameters used by the register allocator */
19 /*-------------------------------------------*/
20
21 struct MonoLMF {
22 gpointer previous_lmf;
23 gpointer lmf_addr;
24 MonoMethod *method;
25 gulong ebp;
26 gulong eip;
27 gulong pregs[6];
28 gulong gregs[16];
29 gdouble fregs[16];
30 };
31
32 typedef struct MonoCompileArch {
33 gpointer litpool;
34 glong litsize;
35 int bkchain_reg;
36 } MonoCompileArch;
37
38 typedef struct
39 {
40 void *prev;
41 void *unused[5];
42 void *regs[8];
43 void *return_address;
44 } MonoS390StackFrame;
45
46 // #define MONO_ARCH_SIGSEGV_ON_ALTSTACK 1
47 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN 1
48 #define MONO_ARCH_NO_EMULATE_LONG_MUL_OPTS 1
49 #define MONO_ARCH_NO_EMULATE_LONG_SHIFT_OPS 1
50 #define MONO_ARCH_HAVE_IS_INT_OVERFLOW 1
51 #define MONO_ARCH_NEED_DIV_CHECK 1
52 #define MONO_ARCH_SIGNAL_STACK_SIZE 256*1024
53 #define MONO_ARCH_HAVE_DECOMPOSE_OPTS 1
54 #define MONO_ARCH_IMT_REG s390_r9
55 #define MONO_ARCH_VTABLE_REG S390_FIRST_ARG_REG
56 #define MONO_ARCH_RGCTX_REG MONO_ARCH_IMT_REG
57 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX 1
58 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
59 #define MONO_ARCH_HAVE_CONTEXT_SET_INT_REG 1
60 #define MONO_ARCH_USE_SIGACTION 1
61 #define MONO_ARCH_GC_MAPS_SUPPORTED 1
62 #define MONO_ARCH_GSHARED_SUPPORTED 1
63 #define MONO_ARCH_MONITOR_ENTER_ADJUSTMENT 1
64 #define MONO_ARCH_HAVE_INVALIDATE_METHOD 1
65 #define MONO_ARCH_HAVE_OP_GENERIC_CLASS_INIT 1
66 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK 1
67
68 #define S390_STACK_ALIGNMENT 8
69 #define S390_FIRST_ARG_REG s390_r2
70 #define S390_LAST_ARG_REG s390_r6
71 #define S390_FIRST_FPARG_REG s390_f0
72 #define S390_LAST_FPARG_REG s390_f6
73
74 /*===============================================*/
75 /* Definitions used by mini-codegen.c */
76 /*===============================================*/
77
78 /*------------------------------------------------------*/
79 /* use s390_r2-s390_r6 as parm registers */
80 /* s390_r0, s390_r1, s390_r12, s390_r13 used internally */
81 /* s390_r8..s390_r10 are used for global regalloc */
82 /* -- except for s390_r9 which is used as IMT pointer */
83 /* s390_r11 is sometimes used as the frame pointer */
84 /* s390_r15 is the stack pointer */
85 /*------------------------------------------------------*/
86
87 #define MONO_ARCH_CALLEE_REGS (0x00fc)
88
89 #define MONO_ARCH_CALLEE_SAVED_REGS 0xfd00
90
91 /*----------------------------------------*/
92 /* use s390_f1/s390_f3-s390_f15 as temps */
93 /*----------------------------------------*/
94
95 #define MONO_ARCH_CALLEE_FREGS (0xfffe)
96
97 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
98
99 #define MONO_ARCH_USE_FPSTACK FALSE
100 #define MONO_ARCH_FPSTACK_SIZE 0
101
102 #define MONO_ARCH_INST_FIXED_REG(desc) ((desc == 'o') ? s390_r2 : \
103 ((desc == 'g') ? s390_f0 : \
104 ((desc == 'A') ? S390_FIRST_ARG_REG : -1)))
105
106 #define MONO_ARCH_INST_IS_FLOAT(desc) ((desc == 'f') || (desc == 'g'))
107
108 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
109
110 #define MONO_ARCH_INST_IS_REGPAIR(desc) (0)
111 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hr) -1
112
113 #define MONO_ARCH_IS_GLOBAL_IREG(reg) 0
114
115 #define MONO_ARCH_FRAME_ALIGNMENT 8
116 #define MONO_ARCH_CODE_ALIGNMENT 32
117
118 /*-----------------------------------------------*/
119 /* SIMD Related Definitions */
120 /*-----------------------------------------------*/
121
122 #define MONO_MAX_XREGS 31
123 #define MONO_ARCH_CALLEE_XREGS 0x0
124 #define MONO_ARCH_CALLEE_SAVED_XREGS 0x0
125
126 /*-----------------------------------------------*/
127 /* Macros used to generate instructions */
128 /*-----------------------------------------------*/
129 #define S390_OFFSET(b, t) (guchar *) ((guint64) (b) - (guint64) (t))
130 #define S390_RELATIVE(b, t) (guchar *) ((((guint64) (b) - (guint64) (t))) / 2)
131
132 #define CODEPTR(c, o) (o) = (short *) ((guint64) c - 2)
133 #define PTRSLOT(c, o) *(o) = (short) ((guint64) c - (guint64) (o) + 2)/2
134
135 #define S390_CC_EQ 8
136 #define S390_ALIGN(v, a) (((a) > 0 ? (((v) + ((a) - 1)) & ~((a) - 1)) : (v)))
137
138 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do { \
139 MonoS390StackFrame *sframe; \
140 __asm__ volatile("lgr %0,15" : "=r" (sframe)); \
141 MONO_CONTEXT_SET_BP ((ctx), sframe->prev); \
142 MONO_CONTEXT_SET_SP ((ctx), sframe->prev); \
143 MONO_CONTEXT_SET_IP ((ctx), func); \
144 } while (0)
145
146 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf) do { (lmf)->ebp = -1; } while (0)
147
148 /*------------------------------------------------------------------*/
149 /* */
150 /* Name - s390_patch_rel */
151 /* */
152 /* Function - Patch the code with a given offset. */
153 /* */
154 /*------------------------------------------------------------------*/
155
156 static void inline
s390_patch_rel(guchar * code,guint64 target)157 s390_patch_rel (guchar *code, guint64 target)
158 {
159 guint32 *offset = (guint32 *) code;
160
161 if (target != 0) {
162 *offset = (guint32) target;
163 }
164 }
165
166 /*========================= End of Function ========================*/
167
168 /*------------------------------------------------------------------*/
169 /* */
170 /* Name - s390_patch_addr */
171 /* */
172 /* Function - Patch the code with a given address. */
173 /* */
174 /*------------------------------------------------------------------*/
175
176 static void inline
s390_patch_addr(guchar * code,guint64 target)177 s390_patch_addr (guchar *code, guint64 target)
178 {
179 guint64 *offset = (guint64 *) code;
180
181 if (target != 0) {
182 *offset = target;
183 }
184 }
185
186 /*========================= End of Function ========================*/
187
188 /*------------------------------------------------------------------*/
189 /* */
190 /* Name - restoreLMF */
191 /* */
192 /* Function - Restore the LMF state prior to exiting a method. */
193 /* */
194 /*------------------------------------------------------------------*/
195
196 #define restoreLMF(code, frame_reg, stack_usage) do \
197 { \
198 int lmfOffset = 0; \
199 \
200 s390_lgr (code, s390_r13, frame_reg); \
201 \
202 lmfOffset = stack_usage - sizeof(MonoLMF); \
203 \
204 /*-------------------------------------------------*/ \
205 /* r13 = my lmf */ \
206 /*-------------------------------------------------*/ \
207 s390_aghi (code, s390_r13, lmfOffset); \
208 \
209 /*-------------------------------------------------*/ \
210 /* r6 = &jit_tls->lmf */ \
211 /*-------------------------------------------------*/ \
212 s390_lg (code, s390_r6, 0, s390_r13, \
213 G_STRUCT_OFFSET(MonoLMF, lmf_addr)); \
214 \
215 /*-------------------------------------------------*/ \
216 /* r0 = lmf.previous_lmf */ \
217 /*-------------------------------------------------*/ \
218 s390_lg (code, s390_r0, 0, s390_r13, \
219 G_STRUCT_OFFSET(MonoLMF, previous_lmf)); \
220 \
221 /*-------------------------------------------------*/ \
222 /* jit_tls->lmf = previous_lmf */ \
223 /*-------------------------------------------------*/ \
224 s390_lg (code, s390_r13, 0, s390_r6, 0); \
225 s390_stg (code, s390_r0, 0, s390_r6, 0); \
226 } while (0)
227
228 /*========================= End of Function ========================*/
229
230 #endif /* __MONO_MINI_S390X_H__ */
231