e2k: Increase PCS and PS sizes.

Dynamically expanding the stack has not yet been
implemented, but sometimes applications require
larger stacks.

Signed-off-by: Denis Drakhnya <numas13@gmail.com>

linux-user/elfload.c

@@ -1642,7 +1642,7 @@ void e2k_pcs_new(E2KPcsState *pcs)
     pcs->is_readable = true;
     pcs->is_writable = true;
     pcs->index = 0;
-    pcs->size = TARGET_PAGE_SIZE;
+    pcs->size = E2K_DEFAULT_PCS_SIZE;
     pcs->base = e2k_mmap(pcs->size);
 }
 
@@ -1651,7 +1651,7 @@ void e2k_ps_new(E2KPsState *ps)
     ps->is_readable = true;
     ps->is_writable = true;
     ps->index = 0;
-    ps->size = TARGET_PAGE_SIZE * 8;
+    ps->size = E2K_DEFAULT_PS_SIZE;
     ps->base = e2k_mmap(ps->size);
     ps->base_tag = e2k_mmap(ps->size / 8);
 }

target/e2k/cpu.h

@@ -25,6 +25,8 @@ void e2k_tcg_initialize(void);
 
 #define MMU_USER_IDX 1
 #define CPU_RESOLVING_TYPE TYPE_E2K_CPU
+#define E2K_DEFAULT_PCS_SIZE (TARGET_PAGE_SIZE * 4)
+#define E2K_DEFAULT_PS_SIZE (TARGET_PAGE_SIZE * 16)
 
 #define E2K_TAG_SIZE 2 /* 2-bit tag for 32-bit value */
 #define E2K_REG_LEN sizeof(uint64_t)