source: mainline/tools/amd64/gencontext.c@ cd92528

#include <stdio.h>
#include <stdint.h>

typedef uint64_t __u64;
typedef __u64 ipl_t;
typedef __u64 __address;

#define __amd64_TYPES_H__
#include "../../arch/amd64/include/context.h"

#define FILENAME "../../arch/amd64/include/context_offset.h"

int main(void)
{
        FILE *f;
        struct context ctx;
        struct context *pctx = &ctx;

        struct interrupt_context ictx;
        struct interrupt_context *ipctx = &ictx;

        f = fopen(FILENAME,"w");
        if (!f) {
                perror(FILENAME);
                return 1;
        }

        fprintf(f, "/* This file is automatically generated by %s. */\n", __FILE__);    

        fprintf(f,"#define OFFSET_SP  0x%x\n", ((int) &pctx->sp) - (int) pctx);
        fprintf(f,"#define OFFSET_PC  0x%x\n", ((int) &pctx->pc) - (int) pctx);
        fprintf(f,"#define OFFSET_RBX 0x%x\n", ((int) &pctx->rbx) - (int) pctx);
        fprintf(f,"#define OFFSET_RBP 0x%x\n", ((int) &pctx->rbp) - (int) pctx);
        fprintf(f,"#define OFFSET_R12 0x%x\n", ((int) &pctx->r12) - (int) pctx);
        fprintf(f,"#define OFFSET_R13 0x%x\n", ((int) &pctx->r13) - (int) pctx);
        fprintf(f,"#define OFFSET_R14 0x%x\n", ((int) &pctx->r14) - (int) pctx);
        fprintf(f,"#define OFFSET_R15 0x%x\n", ((int) &pctx->r15) - (int) pctx);
        fprintf(f,"#define OFFSET_IPL 0x%x\n", ((int) &pctx->ipl) - (int) pctx);

        fprintf(f, "\n");

#define ifpr(big, nm) fprintf(f, "#define IOFFSET_" #big " 0x%x\n", ((int) &ipctx->nm) - (int) ipctx)
        
        ifpr(RAX, rax);
        ifpr(RBX, rbx);
        ifpr(RCX, rcx);
        ifpr(RDX, rdx);
        ifpr(RSI, rsi);
        ifpr(RDI, rdi);
        ifpr(R8, r8);
        ifpr(R9, r9);
        ifpr(R10, r10);
        ifpr(R11, r11);
        ifpr(R12, r12);
        ifpr(R13, r13);
        ifpr(R14, r14);
        ifpr(R15, r15);
        ifpr(RBP, rbp);

        fprintf(f, "#define IREGISTER_SPACE %d\n", sizeof(ictx));

        fclose(f);

        return 0;
}