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authorRichard Henderson <richard.henderson@linaro.org>2021-04-25 19:53:15 -0700
committerLaurent Vivier <laurent@vivier.eu>2021-05-15 21:43:23 +0200
commit089a2256eec34f56db88977bf5bf8d566c4f24ad (patch)
tree04adbb475d400e4160b6518555b3f23fc46bbeaa /linux-user/elfload.c
parenteb215f40c2b4cbb12e97197db5fb06bd73b8324e (diff)
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linux-user/sparc: Clean up init_thread
Share code between sparc32 and sparc64, removing a bit of pointless difference wrt psr/tstate. Use sizeof(abi_ulong) for allocating initial register window. Use TARGET_STACK_BIAS. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210426025334.1168495-7-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Diffstat (limited to 'linux-user/elfload.c')
-rw-r--r--linux-user/elfload.c33
1 files changed, 5 insertions, 28 deletions
diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index fc9c4f1..ffc03d7 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -676,48 +676,25 @@ static uint32_t get_elf_hwcap2(void)
#define ELF_CLASS ELFCLASS64
#define ELF_ARCH EM_SPARCV9
-
-#define STACK_BIAS 2047
-
-static inline void init_thread(struct target_pt_regs *regs,
- struct image_info *infop)
-{
-#ifndef TARGET_ABI32
- regs->tstate = 0;
-#endif
- regs->pc = infop->entry;
- regs->npc = regs->pc + 4;
- regs->y = 0;
-#ifdef TARGET_ABI32
- regs->u_regs[14] = infop->start_stack - 16 * 4;
-#else
- if (personality(infop->personality) == PER_LINUX32)
- regs->u_regs[14] = infop->start_stack - 16 * 4;
- else
- regs->u_regs[14] = infop->start_stack - 16 * 8 - STACK_BIAS;
-#endif
-}
-
#else
#define ELF_START_MMAP 0x80000000
#define ELF_HWCAP (HWCAP_SPARC_FLUSH | HWCAP_SPARC_STBAR | HWCAP_SPARC_SWAP \
| HWCAP_SPARC_MULDIV)
-
#define ELF_CLASS ELFCLASS32
#define ELF_ARCH EM_SPARC
+#endif /* TARGET_SPARC64 */
static inline void init_thread(struct target_pt_regs *regs,
struct image_info *infop)
{
- regs->psr = 0;
+ /* Note that target_cpu_copy_regs does not read psr/tstate. */
regs->pc = infop->entry;
regs->npc = regs->pc + 4;
regs->y = 0;
- regs->u_regs[14] = infop->start_stack - 16 * 4;
+ regs->u_regs[14] = (infop->start_stack - 16 * sizeof(abi_ulong)
+ - TARGET_STACK_BIAS);
}
-
-#endif
-#endif
+#endif /* TARGET_SPARC */
#ifdef TARGET_PPC