linux-user: save auxv length
[qemu.git] / target-lm32 / op_helper.c
1 #include <assert.h>
2 #include "cpu.h"
3 #include "dyngen-exec.h"
4 #include "helper.h"
5 #include "host-utils.h"
6
7 #include "hw/lm32_pic.h"
8 #include "hw/lm32_juart.h"
9
10 #if !defined(CONFIG_USER_ONLY)
11 #define MMUSUFFIX _mmu
12 #define SHIFT 0
13 #include "softmmu_template.h"
14 #define SHIFT 1
15 #include "softmmu_template.h"
16 #define SHIFT 2
17 #include "softmmu_template.h"
18 #define SHIFT 3
19 #include "softmmu_template.h"
20
21 void helper_raise_exception(uint32_t index)
22 {
23 env->exception_index = index;
24 cpu_loop_exit(env);
25 }
26
27 void helper_hlt(void)
28 {
29 env->halted = 1;
30 env->exception_index = EXCP_HLT;
31 cpu_loop_exit(env);
32 }
33
34 void helper_wcsr_im(uint32_t im)
35 {
36 lm32_pic_set_im(env->pic_state, im);
37 }
38
39 void helper_wcsr_ip(uint32_t im)
40 {
41 lm32_pic_set_ip(env->pic_state, im);
42 }
43
44 void helper_wcsr_jtx(uint32_t jtx)
45 {
46 lm32_juart_set_jtx(env->juart_state, jtx);
47 }
48
49 void helper_wcsr_jrx(uint32_t jrx)
50 {
51 lm32_juart_set_jrx(env->juart_state, jrx);
52 }
53
54 uint32_t helper_rcsr_im(void)
55 {
56 return lm32_pic_get_im(env->pic_state);
57 }
58
59 uint32_t helper_rcsr_ip(void)
60 {
61 return lm32_pic_get_ip(env->pic_state);
62 }
63
64 uint32_t helper_rcsr_jtx(void)
65 {
66 return lm32_juart_get_jtx(env->juart_state);
67 }
68
69 uint32_t helper_rcsr_jrx(void)
70 {
71 return lm32_juart_get_jrx(env->juart_state);
72 }
73
74 /* Try to fill the TLB and return an exception if error. If retaddr is
75 NULL, it means that the function was called in C code (i.e. not
76 from generated code or from helper.c) */
77 /* XXX: fix it to restore all registers */
78 void tlb_fill(CPUState *env1, target_ulong addr, int is_write, int mmu_idx,
79 void *retaddr)
80 {
81 TranslationBlock *tb;
82 CPUState *saved_env;
83 unsigned long pc;
84 int ret;
85
86 saved_env = env;
87 env = env1;
88
89 ret = cpu_lm32_handle_mmu_fault(env, addr, is_write, mmu_idx);
90 if (unlikely(ret)) {
91 if (retaddr) {
92 /* now we have a real cpu fault */
93 pc = (unsigned long)retaddr;
94 tb = tb_find_pc(pc);
95 if (tb) {
96 /* the PC is inside the translated code. It means that we have
97 a virtual CPU fault */
98 cpu_restore_state(tb, env, pc);
99 }
100 }
101 cpu_loop_exit(env);
102 }
103 env = saved_env;
104 }
105 #endif
106