Version 0.4.00.4.0

1 files changed, 120 insertions, 0 deletions

diff --git a/cpu/cpu-context.h b/cpu/cpu-context.h
new file mode 100644
index 0000000..1957df9
--- /dev/null
+++ b/cpu/cpu-context.h
@@ -0,0 +1,120 @@
+/***************************************************************
+  __CPU_CONTEXT.H
+
+       This file contains CPU CONTEXT operation functions & data
+       declarations.
+
+       PART OF : CPU - library .
+       USAGE   : Internal only .
+       NOTE    : Include "libcpu.h" before this FILE .
+
+       Copyright (C) 2026  by Andrew V.Kosteltsev.
+       All Rights Reserved.
+ ***************************************************************/
+#ifndef __CPU_CONTEXT_H
+#define __CPU_CONTEXT_H
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define CPU_GUEST_FD_MAX  256
+
+typedef struct __cpu_fd_entry
+{
+  int           host_fd;
+  unsigned int  owned;
+  unsigned int  flags;
+} __cpu_fd_entry;
+
+typedef struct __cpu_context cpu_context;
+struct __cpu_context
+{
+  __mpu_uint64_t _pc;
+  __mpu_uint64_t _sp;
+  __mpu_uint64_t _fp;
+  __mpu_uint32_t _psw;
+  cpu_stop_reason _stop_reason;
+  __mpu_int32_t _exit_status;
+
+  __mpu_UNIT_t  *_program;
+  __mpu_uint64_t _program_size;
+  __mpu_uint64_t _program_capacity;
+  __mpu_UNIT_t  *_data;
+  __mpu_uint64_t _data_size;
+  __mpu_uint64_t _data_capacity;
+  __mpu_UNIT_t  *_stack;
+  __mpu_uint64_t _stack_size;
+  __mpu_uint64_t _stack_capacity;
+  __mpu_UNIT_t  *_control;
+  __mpu_uint64_t _control_size;
+  __mpu_uint64_t _control_capacity;
+  __mpu_UNIT_t  *_input;
+  __mpu_uint64_t _input_size;
+  __mpu_uint64_t _input_capacity;
+  __mpu_UNIT_t  *_output;
+  __mpu_uint64_t _output_size;
+  __mpu_uint64_t _output_capacity;
+  __mpu_UNIT_t  *_trace;
+  __mpu_uint64_t _trace_size;
+  __mpu_uint64_t _trace_capacity;
+  __mpu_UNIT_t  *_heap;
+  __mpu_uint64_t _heap_brk;
+  __mpu_uint64_t _heap_size;
+  __mpu_uint64_t _heap_capacity;
+  __mpu_uint64_t _heap_limit;
+
+  int             _fd_initialized;
+  __cpu_fd_entry  _fd[CPU_GUEST_FD_MAX];
+
+  int             _cwd_initialized;
+  int             _cwd_fd;
+
+  __mpu_UNIT_t _regs[CPU_REGISTERS_MEM_SIZE_IN_UNITS];
+};
+
+extern __thread struct __cpu_context *pcctx;
+
+#define __PC       (pcctx->_pc)
+#define __SP       (pcctx->_sp)
+#define __FP       (pcctx->_fp)
+#define __REGS     ((__mpu_UNIT_t *)&pcctx->_regs[0])
+#define __PROGRAM  (pcctx->_program)
+#define __PSIZE    (pcctx->_program_size)
+#define __PCAP     (pcctx->_program_capacity)
+#define __DATA     (pcctx->_data)
+#define __DSIZE    (pcctx->_data_size)
+#define __DCAP     (pcctx->_data_capacity)
+#define __STACK    (pcctx->_stack)
+#define __SSIZE    (pcctx->_stack_size)
+#define __SCAP     (pcctx->_stack_capacity)
+#define __CONTROL  (pcctx->_control)
+#define __CSIZE    (pcctx->_control_size)
+#define __CCAP     (pcctx->_control_capacity)
+#define __INPUT    (pcctx->_input)
+#define __ISIZE    (pcctx->_input_size)
+#define __ICAP     (pcctx->_input_capacity)
+#define __OUTPUT   (pcctx->_output)
+#define __OSIZE    (pcctx->_output_size)
+#define __OCAP     (pcctx->_output_capacity)
+#define __TRACE    (pcctx->_trace)
+#define __TSIZE    (pcctx->_trace_size)
+#define __TCAP     (pcctx->_trace_capacity)
+#define __HEAP     (pcctx->_heap)
+#define __HBRK     (pcctx->_heap_brk)
+#define __HSIZE    (pcctx->_heap_size)
+#define __HCAP     (pcctx->_heap_capacity)
+#define __HLIMIT   (pcctx->_heap_limit)
+#define __STOP_REASON (pcctx->_stop_reason)
+#define __EXIT_STATUS (pcctx->_exit_status)
+#define __CPU_PSW  (pcctx->_psw)
+#define __SET_CFLAG(mask)     (pcctx->_psw |= (mask))
+#define __CLEAR_CFLAG(mask)   (pcctx->_psw &= ~(mask))
+#define __INVERT_CFLAG(mask)  (pcctx->_psw ^= (mask))
+#define __CFLAG(mask,shift)   ((pcctx->_psw & (mask)) >> (shift))
+
+extern __mpu_uint64_t __cpu_heap_brk( __mpu_uint64_t new_brk );
+
+#ifdef __cplusplus
+}
+#endif
+#endif