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[Qemu-devel] [PATCH v16 02/35] linux-user: Support tilegx architecture i
From: |
Richard Henderson |
Subject: |
[Qemu-devel] [PATCH v16 02/35] linux-user: Support tilegx architecture in linux-user |
Date: |
Mon, 14 Sep 2015 15:43:09 -0700 |
From: Chen Gang <address@hidden>
Add main working flow feature, system call processing feature, and elf64
tilegx binary loading feature, based on Linux kernel tilegx 64-bit
implementation.
[rth: Moved all of the implementation of atomic instructions to a later patch.]
Signed-off-by: Chen Gang <address@hidden>
Reviewed-by: Peter Maydell <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
include/elf.h | 2 ++
linux-user/elfload.c | 23 ++++++++++++++++
linux-user/main.c | 69 +++++++++++++++++++++++++++++++++++++++++++++++
linux-user/syscall_defs.h | 14 ++++++----
4 files changed, 103 insertions(+), 5 deletions(-)
diff --git a/include/elf.h b/include/elf.h
index 4afd474..79859f0 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 /* TILE-Gx */
+
/* 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 eca0c7f..39f3282 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -1218,6 +1218,29 @@ 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->pc = infop->entry;
+ regs->sp = infop->start_stack;
+
+}
+
+#define ELF_EXEC_PAGESIZE 65536 /* TILE-Gx 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 4ba7228..f3a37a2 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -3412,6 +3412,64 @@ void cpu_loop(CPUS390XState *env)
#endif /* TARGET_S390X */
+#ifdef TARGET_TILEGX
+
+static void gen_sigsegv_mapper(CPUTLGState *env, target_ulong addr)
+{
+ target_siginfo_t info;
+
+ info.si_signo = TARGET_SIGSEGV;
+ info.si_errno = 0;
+ info.si_code = TARGET_SEGV_MAPERR;
+ info._sifields._sigfault._addr = addr;
+ queue_signal(env, info.si_signo, &info);
+}
+
+static void gen_sigill_reg(CPUTLGState *env)
+{
+ target_siginfo_t info;
+
+ info.si_signo = TARGET_SIGILL;
+ info.si_errno = 0;
+ info.si_code = TARGET_ILL_PRVREG;
+ info._sifields._sigfault._addr = env->pc;
+ queue_signal(env, info.si_signo, &info);
+}
+
+void cpu_loop(CPUTLGState *env)
+{
+ CPUState *cs = CPU(tilegx_env_get_cpu(env));
+ int trapnr;
+
+ while (1) {
+ cpu_exec_start(cs);
+ trapnr = cpu_tilegx_exec(cs);
+ cpu_exec_end(cs);
+ switch (trapnr) {
+ case TILEGX_EXCP_SYSCALL:
+ env->regs[TILEGX_R_RE] = do_syscall(env, env->regs[TILEGX_R_NR],
+ env->regs[0], env->regs[1],
+ env->regs[2], env->regs[3],
+ env->regs[4], env->regs[5],
+ env->regs[6], env->regs[7]);
+ env->regs[TILEGX_R_ERR] = TILEGX_IS_ERRNO(env->regs[TILEGX_R_RE])
+ ? -
env->regs[TILEGX_R_RE]
+ : 0;
+ break;
+ case TILEGX_EXCP_REG_IDN_ACCESS:
+ case TILEGX_EXCP_REG_UDN_ACCESS:
+ gen_sigill_reg(env);
+ break;
+ default:
+ fprintf(stderr, "trapnr is %d[0x%x].\n", trapnr, trapnr);
+ g_assert_not_reached();
+ }
+ process_pending_signals(env);
+ }
+}
+
+#endif
+
THREAD CPUState *thread_cpu;
void task_settid(TaskState *ts)
@@ -4377,6 +4435,17 @@ int main(int argc, char **argv, char **envp)
env->psw.mask = regs->psw.mask;
env->psw.addr = regs->psw.addr;
}
+#elif defined(TARGET_TILEGX)
+ {
+ int i;
+ for (i = 0; i < TILEGX_R_COUNT; i++) {
+ env->regs[i] = regs->regs[i];
+ }
+ for (i = 0; i < TILEGX_SPR_COUNT; i++) {
+ env->spregs[i] = 0;
+ }
+ env->pc = regs->pc;
+ }
#else
#error unsupported target CPU
#endif
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 5256fe5..cdc8db4 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -64,8 +64,9 @@
#endif
#if defined(TARGET_I386) || defined(TARGET_ARM) || defined(TARGET_SH4) \
- || defined(TARGET_M68K) || defined(TARGET_CRIS) ||
defined(TARGET_UNICORE32) \
- || defined(TARGET_S390X) || defined(TARGET_OPENRISC)
+ || defined(TARGET_M68K) || defined(TARGET_CRIS) \
+ || defined(TARGET_UNICORE32) || defined(TARGET_S390X) \
+ || defined(TARGET_OPENRISC) || defined(TARGET_TILEGX)
#define TARGET_IOC_SIZEBITS 14
#define TARGET_IOC_DIRBITS 2
@@ -365,7 +366,8 @@ int do_sigaction(int sig, const struct target_sigaction
*act,
|| defined(TARGET_PPC) || defined(TARGET_MIPS) || defined(TARGET_SH4) \
|| defined(TARGET_M68K) || defined(TARGET_ALPHA) || defined(TARGET_CRIS) \
|| defined(TARGET_MICROBLAZE) || defined(TARGET_UNICORE32) \
- || defined(TARGET_S390X) || defined(TARGET_OPENRISC)
+ || defined(TARGET_S390X) || defined(TARGET_OPENRISC) \
+ || defined(TARGET_TILEGX)
#if defined(TARGET_SPARC)
#define TARGET_SA_NOCLDSTOP 8u
@@ -1871,7 +1873,7 @@ struct target_stat {
abi_ulong target_st_ctime_nsec;
unsigned int __unused[2];
};
-#elif defined(TARGET_OPENRISC)
+#elif defined(TARGET_OPENRISC) || defined(TARGET_TILEGX)
/* These are the asm-generic versions of the stat and stat64 structures */
@@ -2264,7 +2266,9 @@ struct target_flock {
struct target_flock64 {
short l_type;
short l_whence;
-#if defined(TARGET_PPC) || defined(TARGET_X86_64) || defined(TARGET_MIPS) ||
defined(TARGET_SPARC) || defined(TARGET_HPPA) || defined (TARGET_MICROBLAZE)
+#if defined(TARGET_PPC) || defined(TARGET_X86_64) || defined(TARGET_MIPS) \
+ || defined(TARGET_SPARC) || defined(TARGET_HPPA) \
+ || defined(TARGET_MICROBLAZE) || defined(TARGET_TILEGX)
int __pad;
#endif
unsigned long long l_start;
--
2.4.3
- [Qemu-devel] [PATCH v16 00/35] TileGX basic instructions, Richard Henderson, 2015/09/14
- [Qemu-devel] [PATCH v16 02/35] linux-user: Support tilegx architecture in linux-user,
Richard Henderson <=
- [Qemu-devel] [PATCH v16 03/35] linux-user: Conditionalize syscalls which are not defined in tilegx, Richard Henderson, 2015/09/14
- [Qemu-devel] [PATCH v16 07/35] target-tilegx: Fix LDNA_ADD_IMM8_OPCODE_X1, Richard Henderson, 2015/09/14
- [Qemu-devel] [PATCH v16 06/35] target-tilegx: Modify _SPECIAL_ opcodes, Richard Henderson, 2015/09/14
- [Qemu-devel] [PATCH v16 01/35] linux-user: tilegx: Add architecture related features, Richard Henderson, 2015/09/14
- [Qemu-devel] [PATCH v16 04/35] target-tilegx: Add opcode basic implementation from Tilera Corporation, Richard Henderson, 2015/09/14
- [Qemu-devel] [PATCH v16 05/35] target-tilegx: Modify opcode_tilegx.h to fit QEMU usage, Richard Henderson, 2015/09/14
- [Qemu-devel] [PATCH v16 08/35] target-tilegx: Add special register information from Tilera Corporation, Richard Henderson, 2015/09/14
- [Qemu-devel] [PATCH v16 09/35] target-tilegx: Add cpu basic features for linux-user, Richard Henderson, 2015/09/14
- [Qemu-devel] [PATCH v16 13/35] target-tilegx: Add TILE-Gx building files, Richard Henderson, 2015/09/14