diff options
author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
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committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/target-lm32/op_helper.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/target-lm32/op_helper.c')
-rw-r--r-- | qemu/target-lm32/op_helper.c | 161 |
1 files changed, 161 insertions, 0 deletions
diff --git a/qemu/target-lm32/op_helper.c b/qemu/target-lm32/op_helper.c new file mode 100644 index 000000000..61209c19b --- /dev/null +++ b/qemu/target-lm32/op_helper.c @@ -0,0 +1,161 @@ +#include <assert.h> +#include "cpu.h" +#include "exec/helper-proto.h" +#include "qemu/host-utils.h" + +#include "hw/lm32/lm32_pic.h" +#include "hw/char/lm32_juart.h" + +#include "exec/cpu_ldst.h" + +#ifndef CONFIG_USER_ONLY +#include "sysemu/sysemu.h" +#endif + +#if !defined(CONFIG_USER_ONLY) +void raise_exception(CPULM32State *env, int index) +{ + CPUState *cs = CPU(lm32_env_get_cpu(env)); + + cs->exception_index = index; + cpu_loop_exit(cs); +} + +void HELPER(raise_exception)(CPULM32State *env, uint32_t index) +{ + raise_exception(env, index); +} + +void HELPER(hlt)(CPULM32State *env) +{ + CPUState *cs = CPU(lm32_env_get_cpu(env)); + + cs->halted = 1; + cs->exception_index = EXCP_HLT; + cpu_loop_exit(cs); +} + +void HELPER(ill)(CPULM32State *env) +{ +#ifndef CONFIG_USER_ONLY + CPUState *cs = CPU(lm32_env_get_cpu(env)); + fprintf(stderr, "VM paused due to illegal instruction. " + "Connect a debugger or switch to the monitor console " + "to find out more.\n"); + vm_stop(RUN_STATE_PAUSED); + cs->halted = 1; + raise_exception(env, EXCP_HALTED); +#endif +} + +void HELPER(wcsr_bp)(CPULM32State *env, uint32_t bp, uint32_t idx) +{ + uint32_t addr = bp & ~1; + + assert(idx < 4); + + env->bp[idx] = bp; + lm32_breakpoint_remove(env, idx); + if (bp & 1) { + lm32_breakpoint_insert(env, idx, addr); + } +} + +void HELPER(wcsr_wp)(CPULM32State *env, uint32_t wp, uint32_t idx) +{ + lm32_wp_t wp_type; + + assert(idx < 4); + + env->wp[idx] = wp; + + wp_type = lm32_wp_type(env->dc, idx); + lm32_watchpoint_remove(env, idx); + if (wp_type != LM32_WP_DISABLED) { + lm32_watchpoint_insert(env, idx, wp, wp_type); + } +} + +void HELPER(wcsr_dc)(CPULM32State *env, uint32_t dc) +{ + uint32_t old_dc; + int i; + lm32_wp_t old_type; + lm32_wp_t new_type; + + old_dc = env->dc; + env->dc = dc; + + for (i = 0; i < 4; i++) { + old_type = lm32_wp_type(old_dc, i); + new_type = lm32_wp_type(dc, i); + + if (old_type != new_type) { + lm32_watchpoint_remove(env, i); + if (new_type != LM32_WP_DISABLED) { + lm32_watchpoint_insert(env, i, env->wp[i], new_type); + } + } + } +} + +void HELPER(wcsr_im)(CPULM32State *env, uint32_t im) +{ + lm32_pic_set_im(env->pic_state, im); +} + +void HELPER(wcsr_ip)(CPULM32State *env, uint32_t im) +{ + lm32_pic_set_ip(env->pic_state, im); +} + +void HELPER(wcsr_jtx)(CPULM32State *env, uint32_t jtx) +{ + lm32_juart_set_jtx(env->juart_state, jtx); +} + +void HELPER(wcsr_jrx)(CPULM32State *env, uint32_t jrx) +{ + lm32_juart_set_jrx(env->juart_state, jrx); +} + +uint32_t HELPER(rcsr_im)(CPULM32State *env) +{ + return lm32_pic_get_im(env->pic_state); +} + +uint32_t HELPER(rcsr_ip)(CPULM32State *env) +{ + return lm32_pic_get_ip(env->pic_state); +} + +uint32_t HELPER(rcsr_jtx)(CPULM32State *env) +{ + return lm32_juart_get_jtx(env->juart_state); +} + +uint32_t HELPER(rcsr_jrx)(CPULM32State *env) +{ + return lm32_juart_get_jrx(env->juart_state); +} + +/* Try to fill the TLB and return an exception if error. If retaddr is + * NULL, it means that the function was called in C code (i.e. not + * from generated code or from helper.c) + */ +void tlb_fill(CPUState *cs, target_ulong addr, int is_write, int mmu_idx, + uintptr_t retaddr) +{ + int ret; + + ret = lm32_cpu_handle_mmu_fault(cs, addr, is_write, mmu_idx); + if (unlikely(ret)) { + if (retaddr) { + /* now we have a real cpu fault */ + cpu_restore_state(cs, retaddr); + } + cpu_loop_exit(cs); + } +} +#endif + |