diff options
| author | Marek Vasut <marex@denx.de> | 2017-01-18 23:01:42 +0100 |
|---|---|---|
| committer | Richard Henderson <rth@twiddle.net> | 2017-01-24 13:10:35 -0800 |
| commit | a0a839b65b61a51934b9c2c197fa058c319cc94a (patch) | |
| tree | 925ce4031c19b9e10cc8927c934a4e90a6f7dff6 /linux-user/elfload.c | |
| parent | 3f0c3423093fe7a07af3806cc773bf7d71adf8c9 (diff) | |
| download | qemu-a0a839b65b61a51934b9c2c197fa058c319cc94a.tar.gz | |
nios2: Add usermode binaries emulation
Add missing bits for qemu-user required for emulating Altera Nios2
userspace binaries.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Chris Wulff <crwulff@gmail.com>
Cc: Jeff Da Silva <jdasilva@altera.com>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Sandra Loosemore <sandra@codesourcery.com>
Cc: Yves Vandervennet <yvanderv@altera.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Message-Id: <20170118220146.489-4-marex@denx.de>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'linux-user/elfload.c')
| -rw-r--r-- | linux-user/elfload.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 51794bbb45..c66cbbe84b 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -967,6 +967,63 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUMBState *env #endif /* TARGET_MICROBLAZE */ +#ifdef TARGET_NIOS2 + +#define ELF_START_MMAP 0x80000000 + +#define elf_check_arch(x) ((x) == EM_ALTERA_NIOS2) + +#define ELF_CLASS ELFCLASS32 +#define ELF_ARCH EM_ALTERA_NIOS2 + +static void init_thread(struct target_pt_regs *regs, struct image_info *infop) +{ + regs->ea = infop->entry; + regs->sp = infop->start_stack; + regs->estatus = 0x3; +} + +#define ELF_EXEC_PAGESIZE 4096 + +#define USE_ELF_CORE_DUMP +#define ELF_NREG 49 +typedef target_elf_greg_t target_elf_gregset_t[ELF_NREG]; + +/* See linux kernel: arch/mips/kernel/process.c:elf_dump_regs. */ +static void elf_core_copy_regs(target_elf_gregset_t *regs, + const CPUNios2State *env) +{ + int i; + + (*regs)[0] = -1; + for (i = 1; i < 8; i++) /* r0-r7 */ + (*regs)[i] = tswapreg(env->regs[i + 7]); + + for (i = 8; i < 16; i++) /* r8-r15 */ + (*regs)[i] = tswapreg(env->regs[i - 8]); + + for (i = 16; i < 24; i++) /* r16-r23 */ + (*regs)[i] = tswapreg(env->regs[i + 7]); + (*regs)[24] = -1; /* R_ET */ + (*regs)[25] = -1; /* R_BT */ + (*regs)[26] = tswapreg(env->regs[R_GP]); + (*regs)[27] = tswapreg(env->regs[R_SP]); + (*regs)[28] = tswapreg(env->regs[R_FP]); + (*regs)[29] = tswapreg(env->regs[R_EA]); + (*regs)[30] = -1; /* R_SSTATUS */ + (*regs)[31] = tswapreg(env->regs[R_RA]); + + (*regs)[32] = tswapreg(env->regs[R_PC]); + + (*regs)[33] = -1; /* R_STATUS */ + (*regs)[34] = tswapreg(env->regs[CR_ESTATUS]); + + for (i = 35; i < 49; i++) /* ... */ + (*regs)[i] = -1; +} + +#endif /* TARGET_NIOS2 */ + #ifdef TARGET_OPENRISC #define ELF_START_MMAP 0x08000000 |