Add main working flow feature and loading elf64 tilegx binary feature,
based on Linux kernel tilegx 64-bit implementation.
After this patch, qemu can successfully load elf64 tilegx binary for
linux-user, and the working flow reaches the first correct instruction
position "__start".
Signed-off-by: Chen Gang <gang.chen.5...@gmail.com>
---
include/elf.h | 2 ++
linux-user/elfload.c | 23 ++++++++++++++++
linux-user/main.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 99 insertions(+)
diff --git a/include/elf.h b/include/elf.h
index a516584..e70512c 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -133,6 +133,8 @@ typedef int64_t Elf64_Sxword;
#define EM_AARCH64 183
+#define EM_TILEGX 191 /* Tilegx */
+
/* This is the info that is needed to parse the dynamic section of the file */
#define DT_NULL 0
#define DT_NEEDED 1
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 399c021..12e3ab8 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -1189,6 +1189,29 @@ static inline void init_thread(struct target_pt_regs
*regs, struct image_info *i
#endif /* TARGET_S390X */
+#ifdef TARGET_TILEGX
+
+/* 42 bits real used address, a half for user mode */
+#define ELF_START_MMAP (0x00000020000000000ULL)
+
+#define elf_check_arch(x) ((x) == EM_TILEGX)
+
+#define ELF_CLASS ELFCLASS64
+#define ELF_DATA ELFDATA2LSB
+#define ELF_ARCH EM_TILEGX
+
+static inline void init_thread(struct target_pt_regs *regs,
+ struct image_info *infop)
+{
+ regs->lr = infop->entry;
+ regs->sp = infop->start_stack;
+
+}
+
+#define ELF_EXEC_PAGESIZE 65536 /* Tilegx page size is 64KB */
+
+#endif /* TARGET_TILEGX */
+
#ifndef ELF_PLATFORM
#define ELF_PLATFORM (NULL)
#endif
diff --git a/linux-user/main.c b/linux-user/main.c
index d92702a..76e5e80 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -3418,6 +3418,20 @@ void cpu_loop(CPUS390XState *env)
#endif /* TARGET_S390X */
+#ifdef TARGET_TILEGX
+void cpu_loop(CPUTLState *env)
+{
+ CPUState *cs = CPU(tilegx_env_get_cpu(env));
+
+ while (1) {
+ cpu_exec_start(cs);
+ cpu_tilegx_exec(env);
+ cpu_exec_end(cs);
+ process_pending_signals(env);
+ }
+}
+#endif
+
THREAD CPUState *thread_cpu;
void task_settid(TaskState *ts)
@@ -4392,6 +4406,66 @@ int main(int argc, char **argv, char **envp)
env->psw.mask = regs->psw.mask;
env->psw.addr = regs->psw.addr;
}
+#elif defined(TARGET_TILEGX)
+ {
+ env->regs[0] = regs->r0;
+ env->regs[1] = regs->r1;
+ env->regs[2] = regs->r2;
+ env->regs[3] = regs->r3;
+ env->regs[4] = regs->r4;
+ env->regs[5] = regs->r5;
+ env->regs[6] = regs->r6;
+ env->regs[7] = regs->r7;
+ env->regs[8] = regs->r8;
+ env->regs[9] = regs->r9;
+ env->regs[10] = regs->r10;
+ env->regs[11] = regs->r11;
+ env->regs[12] = regs->r12;
+ env->regs[13] = regs->r13;
+ env->regs[14] = regs->r14;
+ env->regs[15] = regs->r15;
+ env->regs[16] = regs->r16;
+ env->regs[17] = regs->r17;
+ env->regs[18] = regs->r18;
+ env->regs[19] = regs->r19;
+ env->regs[20] = regs->r20;
+ env->regs[21] = regs->r21;
+ env->regs[22] = regs->r22;
+ env->regs[23] = regs->r23;
+ env->regs[24] = regs->r24;
+ env->regs[25] = regs->r25;
+ env->regs[26] = regs->r26;
+ env->regs[27] = regs->r27;
+ env->regs[28] = regs->r28;
+ env->regs[29] = regs->r29;
+ env->regs[30] = regs->r30;
+ env->regs[31] = regs->r31;
+ env->regs[32] = regs->r32;
+ env->regs[33] = regs->r33;
+ env->regs[34] = regs->r34;
+ env->regs[35] = regs->r35;
+ env->regs[36] = regs->r36;
+ env->regs[37] = regs->r37;
+ env->regs[38] = regs->r38;
+ env->regs[39] = regs->r39;
+ env->regs[40] = regs->r40;
+ env->regs[41] = regs->r41;
+ env->regs[42] = regs->r42;
+ env->regs[43] = regs->r43;
+ env->regs[44] = regs->r44;
+ env->regs[45] = regs->r45;
+ env->regs[46] = regs->r46;
+ env->regs[47] = regs->r47;
+ env->regs[48] = regs->r48;
+ env->regs[49] = regs->r49;
+ env->regs[50] = regs->r50;
+ env->regs[51] = regs->r51;
+ env->regs[52] = regs->r52; /* TILEGX_R_BP */
+ env->regs[53] = regs->tp; /* TILEGX_R_TP */
+ env->regs[54] = regs->sp; /* TILEGX_R_SP */
+ env->regs[55] = regs->lr; /* TILEGX_R_LR */
+ env->pc = regs->lr;
+ }
#else
#error unsupported target CPU
#endif
--
1.9.3
