1 #ifndef INCLUDED_ARGS_H
2 #define INCLUDED_ARGS_H
3
4 #include <string.h>
5
6 /* This defines the calling sequences for integers and floats. */
7 #define I0 rdi
8 #define I1 rsi
9 #define I2 rdx
10 #define I3 rcx
11 #define I4 r8
12 #define I5 r9
13 #define F0 xmm0
14 #define F1 xmm1
15 #define F2 xmm2
16 #define F3 xmm3
17 #define F4 xmm4
18 #define F5 xmm5
19 #define F6 xmm6
20 #define F7 xmm7
21
22 typedef union {
23 _Float16 __Float16[8];
24 float _float[4];
25 double _double[2];
26 long long _longlong[2];
27 int _int[4];
28 ulonglong _ulonglong[2];
29 #ifdef CHECK_M64_M128
30 __m64 _m64[2];
31 __m128 _m128[1];
32 __m128h _m128h[1];
33 #endif
34 } XMM_T;
35
36 typedef union {
37 _Float16 __Float16;
38 float _float;
39 double _double;
40 ldouble _ldouble;
41 ulonglong _ulonglong[2];
42 } X87_T;
43 extern void (*callthis)(void);
44 extern unsigned long long rax,rbx,rcx,rdx,rsi,rdi,rsp,rbp,r8,r9,r10,r11,r12,r13,r14,r15;
45 XMM_T xmm_regs[16];
46 X87_T x87_regs[8];
47 extern volatile unsigned long long volatile_var;
48 extern void snapshot (void);
49 extern void snapshot_ret (void);
50 #define WRAP_CALL(N) \
51 (callthis = (void (*)()) (N), (typeof (&N)) snapshot)
52 #define WRAP_RET(N) \
53 (callthis = (void (*)()) (N), (typeof (&N)) snapshot_ret)
54
55 /* Clear all integer registers. */
56 #define clear_int_hardware_registers \
57 asm __volatile__ ("xor %%rax, %%rax\n\t" \
58 "xor %%rbx, %%rbx\n\t" \
59 "xor %%rcx, %%rcx\n\t" \
60 "xor %%rdx, %%rdx\n\t" \
61 "xor %%rsi, %%rsi\n\t" \
62 "xor %%rdi, %%rdi\n\t" \
63 "xor %%r8, %%r8\n\t" \
64 "xor %%r9, %%r9\n\t" \
65 "xor %%r10, %%r10\n\t" \
66 "xor %%r11, %%r11\n\t" \
67 "xor %%r12, %%r12\n\t" \
68 "xor %%r13, %%r13\n\t" \
69 "xor %%r14, %%r14\n\t" \
70 "xor %%r15, %%r15\n\t" \
71 ::: "rax", "rbx", "rcx", "rdx", "rsi", "rdi", "r8", \
72 "r9", "r10", "r11", "r12", "r13", "r14", "r15");
73
74 /* This is the list of registers available for passing arguments. Not all of
75 these are used or even really available. */
76 struct IntegerRegisters
77 {
78 unsigned long long rax, rbx, rcx, rdx, rsi, rdi, r8, r9, r10, r11, r12, r13, r14, r15;
79 };
80 struct FloatRegisters
81 {
82 double mm0, mm1, mm2, mm3, mm4, mm5, mm6, mm7;
83 ldouble st0, st1, st2, st3, st4, st5, st6, st7;
84 XMM_T xmm0, xmm1, xmm2, xmm3, xmm4, xmm5, xmm6, xmm7, xmm8, xmm9,
85 xmm10, xmm11, xmm12, xmm13, xmm14, xmm15;
86 };
87
88 /* Implemented in scalarargs.c */
89 extern struct IntegerRegisters iregs;
90 extern struct FloatRegisters fregs;
91 extern unsigned int num_iregs, num_fregs;
92
93 #define check_int_arguments do { \
94 assert (num_iregs <= 0 || iregs.I0 == I0); \
95 assert (num_iregs <= 1 || iregs.I1 == I1); \
96 assert (num_iregs <= 2 || iregs.I2 == I2); \
97 assert (num_iregs <= 3 || iregs.I3 == I3); \
98 assert (num_iregs <= 4 || iregs.I4 == I4); \
99 assert (num_iregs <= 5 || iregs.I5 == I5); \
100 } while (0)
101
102 #define check_char_arguments check_int_arguments
103 #define check_short_arguments check_int_arguments
104 #define check_long_arguments check_int_arguments
105
106 /* Clear register struct. */
107 #define clear_struct_registers \
108 rax = rbx = rcx = rdx = rdi = rsi = rbp = rsp \
109 = r8 = r9 = r10 = r11 = r12 = r13 = r14 = r15 = 0; \
110 memset (&iregs, 0, sizeof (iregs)); \
111 memset (&fregs, 0, sizeof (fregs)); \
112 memset (xmm_regs, 0, sizeof (xmm_regs)); \
113 memset (x87_regs, 0, sizeof (x87_regs));
114
115 /* Clear both hardware and register structs for integers. */
116 #define clear_int_registers \
117 clear_struct_registers \
118 clear_int_hardware_registers
119
120 /* TODO: Do the checking. */
121 #define check_f_arguments(T) do { \
122 assert (num_fregs <= 0 || fregs.xmm0._ ## T [0] == xmm_regs[0]._ ## T [0]); \
123 assert (num_fregs <= 1 || fregs.xmm1._ ## T [0] == xmm_regs[1]._ ## T [0]); \
124 assert (num_fregs <= 2 || fregs.xmm2._ ## T [0] == xmm_regs[2]._ ## T [0]); \
125 assert (num_fregs <= 3 || fregs.xmm3._ ## T [0] == xmm_regs[3]._ ## T [0]); \
126 assert (num_fregs <= 4 || fregs.xmm4._ ## T [0] == xmm_regs[4]._ ## T [0]); \
127 assert (num_fregs <= 5 || fregs.xmm5._ ## T [0] == xmm_regs[5]._ ## T [0]); \
128 assert (num_fregs <= 6 || fregs.xmm6._ ## T [0] == xmm_regs[6]._ ## T [0]); \
129 assert (num_fregs <= 7 || fregs.xmm7._ ## T [0] == xmm_regs[7]._ ## T [0]); \
130 } while (0)
131
132 #define check_float16_arguments check_f_arguments(_Float16)
133 #define check_float_arguments check_f_arguments(float)
134 #define check_double_arguments check_f_arguments(double)
135
136 #define check_vector_arguments(T,O) do { \
137 assert (num_fregs <= 0 \
138 || memcmp (((char *) &fregs.xmm0) + (O), \
139 &xmm_regs[0], \
140 sizeof (__ ## T) - (O)) == 0); \
141 assert (num_fregs <= 1 \
142 || memcmp (((char *) &fregs.xmm1) + (O), \
143 &xmm_regs[1], \
144 sizeof (__ ## T) - (O)) == 0); \
145 assert (num_fregs <= 2 \
146 || memcmp (((char *) &fregs.xmm2) + (O), \
147 &xmm_regs[2], \
148 sizeof (__ ## T) - (O)) == 0); \
149 assert (num_fregs <= 3 \
150 || memcmp (((char *) &fregs.xmm3) + (O), \
151 &xmm_regs[3], \
152 sizeof (__ ## T) - (O)) == 0); \
153 assert (num_fregs <= 4 \
154 || memcmp (((char *) &fregs.xmm4) + (O), \
155 &xmm_regs[4], \
156 sizeof (__ ## T) - (O)) == 0); \
157 assert (num_fregs <= 5 \
158 || memcmp (((char *) &fregs.xmm5) + (O), \
159 &xmm_regs[5], \
160 sizeof (__ ## T) - (O)) == 0); \
161 assert (num_fregs <= 6 \
162 || memcmp (((char *) &fregs.xmm6) + (O), \
163 &xmm_regs[6], \
164 sizeof (__ ## T) - (O)) == 0); \
165 assert (num_fregs <= 7 \
166 || memcmp (((char *) &fregs.xmm7) + (O), \
167 &xmm_regs[7], \
168 sizeof (__ ## T) - (O)) == 0); \
169 } while (0)
170
171 #define check_m64_arguments check_vector_arguments(m64, 0)
172 #define check_m128_arguments check_vector_arguments(m128, 0)
173
174 /* ldoubles are not passed in registers */
175 #define check_ldouble_arguments
176
177 /* TODO: Do the clearing. */
178 #define clear_float_hardware_registers
179 #define clear_x87_hardware_registers
180
181 #define clear_float_registers \
182 clear_struct_registers \
183 clear_float_hardware_registers
184
185 #define clear_x87_registers \
186 clear_struct_registers \
187 clear_x87_hardware_registers
188
189
190 #endif /* INCLUDED_ARGS_H */