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[Qemu-devel] [PATCH 1/5] [sh4] sleep instruction
From: |
Shin-ichiro KAWASAKI |
Subject: |
[Qemu-devel] [PATCH 1/5] [sh4] sleep instruction |
Date: |
Tue, 19 Aug 2008 01:20:43 +0900 |
User-agent: |
Thunderbird 2.0.0.16 (Windows/20080708) |
This patch adds sleep instruction.
diff -ruwN a/target-sh4/cpu.h b/target-sh4/cpu.h
--- a/target-sh4/cpu.h 2008-07-02 05:01:19.000000000 +0900
+++ b/target-sh4/cpu.h 2008-08-18 21:08:54.000000000 +0900
@@ -117,6 +117,7 @@
CPU_COMMON tlb_t utlb[UTLB_SIZE]; /* unified translation table */
tlb_t itlb[ITLB_SIZE]; /* instruction translation table */
void *intc_handle;
+ int intr_at_halt; /* SR_BL ignored during sleep */
} CPUSH4State;
CPUSH4State *cpu_sh4_init(const char *cpu_model);
diff -ruwN a/target-sh4/exec.h b/target-sh4/exec.h
--- a/target-sh4/exec.h 2008-05-10 03:45:55.000000000 +0900
+++ b/target-sh4/exec.h 2008-08-18 21:00:35.000000000 +0900
@@ -41,6 +41,7 @@
return 0;
if (env->interrupt_request & CPU_INTERRUPT_HARD) {
env->halted = 0;
+ env->intr_at_halt = 1;
return 0;
}
return EXCP_HALTED;
diff -ruwN a/target-sh4/helper.c b/target-sh4/helper.c
--- a/target-sh4/helper.c 2008-05-10 03:45:55.000000000 +0900
+++ b/target-sh4/helper.c 2008-08-18 21:00:35.000000000 +0900
@@ -87,9 +87,10 @@
if (do_exp && env->exception_index != 0x1e0) {
env->exception_index = 0x000; /* masked exception -> reset */
}
- if (do_irq) {
+ if (do_irq && !env->intr_at_halt) {
return; /* masked */
}
+ env->intr_at_halt = 0;
}
if (do_irq) {
diff -ruwN a/target-sh4/op.c b/target-sh4/op.c
--- a/target-sh4/op.c 2008-07-16 21:13:52.000000000 +0900
+++ b/target-sh4/op.c 2008-08-18 21:00:35.000000000 +0900
@@ -1091,6 +1091,13 @@
cpu_loop_exit();
}
+void OPPROTO op_sleep(void)
+{
+ env->halted = 1;
+ env->exception_index = EXCP_HLT;
+ cpu_loop_exit();
+}
+
/* Load and store */
#define MEMSUFFIX _raw
#include "op_mem.c"
diff -ruwN a/target-sh4/translate.c b/target-sh4/translate.c
--- a/target-sh4/translate.c 2008-08-18 05:21:51.000000000 +0900
+++ b/target-sh4/translate.c 2008-08-18 21:00:35.000000000 +0900
@@ -298,7 +298,12 @@
case 0x0009: /* nop */
return;
case 0x001b: /* sleep */
- assert(0); /* XXXXX */
+ if (ctx->memidx) {
+ gen_op_sleep();
+ } else {
+ gen_op_raise_illegal_instruction();
+ ctx->bstate = BS_EXCP;
+ }
return;
}
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