| Line 1... |
Line 1... |
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////////////////////////////////////////////////////////////////////////////////
|
//
|
//
|
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// Filename: zip_sim.cpp
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//
|
//
|
// Filename: busmaster_tb.cpp
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// Project: CMod S6 System on a Chip, ZipCPU demonstration project
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//
|
//
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// Project: FPGA library development (S6 development board)
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// Purpose: This provides a simulation capability for the CMod S6 SoC.
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//
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//
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// Purpose:
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// Creator: Dan Gisselquist, Ph.D.
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// Gisselquist Technology, LLC
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//
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//
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// Creator: Dan Gisselquist
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////////////////////////////////////////////////////////////////////////////////
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// Gisselquist Tecnology, LLC
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//
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//
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// Copyright: 2015
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// Copyright (C) 2015-2016, Gisselquist Technology, LLC
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//
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// This program is free software (firmware): you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as published
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// by the Free Software Foundation, either version 3 of the License, or (at
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|
// your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but WITHOUT
|
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// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
|
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// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program. (It's in the $(ROOT)/doc directory, run make with no
|
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// target there if the PDF file isn't present.) If not, see
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// <http://www.gnu.org/licenses/> for a copy.
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//
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// License: GPL, v3, as defined and found on www.gnu.org,
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// http://www.gnu.org/licenses/gpl.html
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//
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//
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|
////////////////////////////////////////////////////////////////////////////////
|
//
|
//
|
//
|
//
|
#include <stdio.h>
|
#include <stdio.h>
|
#include <sys/types.h>
|
#include <sys/types.h>
|
#include <sys/stat.h>
|
#include <sys/stat.h>
|
#include <fcntl.h>
|
#include <fcntl.h>
|
#include <signal.h>
|
#include <signal.h>
|
#include <time.h>
|
#include <time.h>
|
#include <unistd.h>
|
#include <unistd.h>
|
|
#include <stdint.h>
|
|
|
#include "verilated.h"
|
#include "verilated.h"
|
#include "Vbusmaster.h"
|
#include "Vbusmaster.h"
|
|
|
|
#include "regdefs.h"
|
#include "testb.h"
|
#include "testb.h"
|
// #include "twoc.h"
|
// #include "twoc.h"
|
#include "qspiflashsim.h"
|
#include "qspiflashsim.h"
|
#include "uartsim.h"
|
#include "uartsim.h"
|
|
|
|
typedef uint32_t BUSW;
|
|
|
class GPIOSIM {
|
class GPIOSIM {
|
public:
|
public:
|
unsigned operator()(const unsigned o_gpio) { return 0; }
|
unsigned operator()(const unsigned o_gpio) { return 0; }
|
};
|
};
|
|
|
| Line 95... |
Line 122... |
|
|
TESTB<Vbusmasterr>::tick();
|
TESTB<Vbusmasterr>::tick();
|
|
|
if (m_core->o_led != m_last_led) {
|
if (m_core->o_led != m_last_led) {
|
printf("LED: %08x\n", m_core->o_led);
|
printf("LED: %08x\n", m_core->o_led);
|
|
m_last_led = m_core->o_led;
|
}
|
}
|
|
|
/*
|
/*
|
|
printf("PC: %08x:%08x [%08x:%08x:%08x:%08x:%08x],%08x,%08x,%d,%08x,%08x (%x,%x)\n",
|
printf("PC: %08x:%08x [%08x:%08x:%08x:%08x:%08x],%08x,%08x,%d,%08x,%08x\n",
|
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__ipc,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__ipc,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__upc,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__upc,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[0],
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[0],
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[1],
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[1],
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[2],
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[2],
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| Line 111... |
Line 138... |
m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[15],
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[15],
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction_decoder__DOT__r_I,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction_decoder__DOT__r_I,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__r_opB,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__r_opB,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction_decoder__DOT__w_dcdR_pc,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction_decoder__DOT__w_dcdR_pc,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__r_opA,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__r_opA,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__wr_reg_vl);
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__wr_reg_vl,
|
*/
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__w_iflags,
|
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__w_iflags,
|
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__pf_pc
|
|
);
|
|
if (m_core->v__DOT__wb_cyc) {
|
|
printf("WB: %s/%s/%s[@0x%08x] %08x ->%s/%s %08x\n",
|
|
(m_core->v__DOT__wb_cyc)?"CYC":" ",
|
|
(m_core->v__DOT__wb_stb)?"STB":" ",
|
|
(m_core->v__DOT__wb_we )?"WE ":" ",
|
|
(m_core->v__DOT__w_zip_addr),
|
|
(m_core->v__DOT__wb_data),
|
|
(m_core->v__DOT__wb_ack)?"ACK":" ",
|
|
(m_core->v__DOT__wb_stall)?"STL":" ",
|
|
(m_core->v__DOT__wb_idata)
|
|
);
|
|
}
|
|
|
/*
|
|
if (m_core->v__DOT__thecpu__DOT__thecpu__DOT__pf_valid)
|
if (m_core->v__DOT__thecpu__DOT__thecpu__DOT__pf_valid)
|
printf("PC: %08x - %08x, uart=%d,%d, pic = %d,%04x,%0d,%04x\n",
|
printf("PC: %08x - %08x, uart=%d,%d, pic = %d,%04x,%0d,%04x\n",
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction_pc,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction_pc,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction,
|
m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction,
|
m_core->i_rx_stb, m_core->i_tx_busy,
|
m_core->i_rx_stb, m_core->i_tx_busy,
|
m_core->v__DOT__pic__DOT__r_gie,
|
m_core->v__DOT__pic__DOT__r_gie,
|
m_core->v__DOT__pic__DOT__r_int_enable,
|
m_core->v__DOT__pic__DOT__r_int_enable,
|
m_core->v__DOT__pic__DOT__r_any,
|
m_core->v__DOT__pic__DOT__r_any,
|
m_core->v__DOT__pic__DOT__r_int_state);
|
m_core->v__DOT__pic__DOT__r_int_state);
|
*/
|
*/
|
|
|
|
printf("%08x\n", m_core->v__DOT__zipt_a__DOT__r_value);
|
}
|
}
|
};
|
};
|
|
|
ZIPSIM_TB *tb;
|
ZIPSIM_TB *tb;
|
|
|
bool iself(const char *fname) {
|
bool iself(const char *fname) {
|
FILE *fp;
|
FILE *fp;
|
bool ret = true;
|
bool ret = true;
|
fp = fopen(fname, "rb");
|
|
|
|
if (!fp)
|
if ((!fname)||(!fname[0]))
|
return false;
|
return false;
|
if (0x7f != fgetc(fp))
|
|
ret = false;
|
|
if ('E' != fgetc(fp))
|
|
ret = false;
|
|
if ('L' != fgetc(fp))
|
|
ret = false;
|
|
if ('F' != fgetc(fp))
|
|
ret = false;
|
|
|
|
|
fp = fopen(fname, "rb");
|
|
|
|
if (!fp) return false;
|
|
if (0x7f != fgetc(fp)) ret = false;
|
|
if ('E' != fgetc(fp)) ret = false;
|
|
if ('L' != fgetc(fp)) ret = false;
|
|
if ('F' != fgetc(fp)) ret = false;
|
fclose(fp);
|
fclose(fp);
|
return ret;
|
return ret;
|
}
|
}
|
|
|
|
long fgetwords(FILE *fp) {
|
|
// Return the number of words in the current file, and return the
|
|
// file as though it had never been adjusted
|
|
long fpos, flen;
|
|
fpos = ftell(fp);
|
|
if (0 != fseek(fp, 0l, SEEK_END)) {
|
|
fprintf(stderr, "ERR: Could not determine file size\n");
|
|
perror("O/S Err:");
|
|
exit(-2);
|
|
} flen = ftell(fp);
|
|
if (0 != fseek(fp, fpos, SEEK_SET)) {
|
|
fprintf(stderr, "ERR: Could not seek on file\n");
|
|
perror("O/S Err:");
|
|
exit(-2);
|
|
} flen /= sizeof(BUSW);
|
|
return flen;
|
|
}
|
|
|
|
class SECTION {
|
|
public:
|
|
unsigned m_start, m_len;
|
|
BUSW m_data[1];
|
|
};
|
|
|
|
SECTION **singlesection(int nwords) {
|
|
fprintf(stderr, "NWORDS = %d\n", nwords);
|
|
size_t sz = (2*(sizeof(SECTION)+sizeof(SECTION *))
|
|
+(nwords-1)*(sizeof(BUSW)));
|
|
char *d = (char *)malloc(sz);
|
|
SECTION **r = (SECTION **)d;
|
|
memset(r, 0, sz);
|
|
r[0] = (SECTION *)(&d[2*sizeof(SECTION *)]);
|
|
r[0]->m_len = nwords;
|
|
r[1] = (SECTION *)(&r[0]->m_data[r[0]->m_len]);
|
|
r[0]->m_start = 0;
|
|
r[1]->m_start = 0;
|
|
r[1]->m_len = 0;
|
|
|
|
return r;
|
|
}
|
|
|
|
SECTION **rawsection(const char *fname) {
|
|
SECTION **secpp, *secp;
|
|
unsigned num_words;
|
|
FILE *fp;
|
|
int nr;
|
|
|
|
fp = fopen(fname, "r");
|
|
if (fp == NULL) {
|
|
fprintf(stderr, "Could not open: %s\n", fname);
|
|
exit(-1);
|
|
}
|
|
|
|
if ((num_words=fgetwords(fp)) > FLASHWORDS) {
|
|
fprintf(stderr, "File overruns flash memory\n");
|
|
exit(-1);
|
|
}
|
|
secpp = singlesection(num_words);
|
|
secp = secpp[0];
|
|
secp->m_start = RESET_ADDRESS;
|
|
secp->m_len = num_words;
|
|
nr= fread(secp->m_data, sizeof(BUSW), num_words, fp);
|
|
if (nr != (int)num_words) {
|
|
fprintf(stderr, "Could not read entire file\n");
|
|
perror("O/S Err:");
|
|
exit(-2);
|
|
} assert(secpp[1]->m_len == 0);
|
|
|
|
return secpp;
|
|
}
|
|
|
|
unsigned byteswap(unsigned n) {
|
|
unsigned r;
|
|
|
|
r = (n&0x0ff); n>>= 8;
|
|
r = (r<<8) | (n&0x0ff); n>>= 8;
|
|
r = (r<<8) | (n&0x0ff); n>>= 8;
|
|
r = (r<<8) | (n&0x0ff); n>>= 8;
|
|
|
|
return r;
|
|
}
|
|
|
|
#include <libelf.h>
|
|
#include <gelf.h>
|
|
|
|
void elfread(const char *fname, unsigned &entry, SECTION **§ions) {
|
|
Elf *e;
|
|
int fd, i;
|
|
size_t n;
|
|
char *id;
|
|
Elf_Kind ek;
|
|
GElf_Ehdr ehdr;
|
|
GElf_Phdr phdr;
|
|
const bool dbg = false;
|
|
|
|
if (elf_version(EV_CURRENT) == EV_NONE) {
|
|
fprintf(stderr, "ELF library initialization err, %s\n", elf_errmsg(-1));
|
|
perror("O/S Err:");
|
|
exit(EXIT_FAILURE);
|
|
} if ((fd = open(fname, O_RDONLY, 0)) < 0) {
|
|
fprintf(stderr, "Could not open %s\n", fname);
|
|
perror("O/S Err:");
|
|
exit(EXIT_FAILURE);
|
|
} if ((e = elf_begin(fd, ELF_C_READ, NULL))==NULL) {
|
|
fprintf(stderr, "Could not run elf_begin, %s\n", elf_errmsg(-1));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
ek = elf_kind(e);
|
|
if (ek == ELF_K_ELF) {
|
|
; // This is the kind of file we should expect
|
|
} else if (ek == ELF_K_AR) {
|
|
fprintf(stderr, "Cannot run an archive!\n");
|
|
exit(EXIT_FAILURE);
|
|
} else if (ek == ELF_K_NONE) {
|
|
;
|
|
} else {
|
|
fprintf(stderr, "Unexpected ELF file kind!\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (gelf_getehdr(e, &ehdr) == NULL) {
|
|
fprintf(stderr, "getehdr() failed: %s\n", elf_errmsg(-1));
|
|
exit(EXIT_FAILURE);
|
|
} if ((i=gelf_getclass(e)) == ELFCLASSNONE) {
|
|
fprintf(stderr, "getclass() failed: %s\n", elf_errmsg(-1));
|
|
exit(EXIT_FAILURE);
|
|
} if ((id = elf_getident(e, NULL)) == NULL) {
|
|
fprintf(stderr, "getident() failed: %s\n", elf_errmsg(-1));
|
|
exit(EXIT_FAILURE);
|
|
} if (i != ELFCLASS32) {
|
|
fprintf(stderr, "This is a 64-bit ELF file, ZipCPU ELF files are all 32-bit\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (dbg) {
|
|
printf(" %-20s 0x%jx\n", "e_type", (uintmax_t)ehdr.e_type);
|
|
printf(" %-20s 0x%jx\n", "e_machine", (uintmax_t)ehdr.e_machine);
|
|
printf(" %-20s 0x%jx\n", "e_version", (uintmax_t)ehdr.e_version);
|
|
printf(" %-20s 0x%jx\n", "e_entry", (uintmax_t)ehdr.e_entry);
|
|
printf(" %-20s 0x%jx\n", "e_phoff", (uintmax_t)ehdr.e_phoff);
|
|
printf(" %-20s 0x%jx\n", "e_shoff", (uintmax_t)ehdr.e_shoff);
|
|
printf(" %-20s 0x%jx\n", "e_flags", (uintmax_t)ehdr.e_flags);
|
|
printf(" %-20s 0x%jx\n", "e_ehsize", (uintmax_t)ehdr.e_ehsize);
|
|
printf(" %-20s 0x%jx\n", "e_phentsize", (uintmax_t)ehdr.e_phentsize);
|
|
printf(" %-20s 0x%jx\n", "e_shentsize", (uintmax_t)ehdr.e_shentsize);
|
|
printf("\n");
|
|
}
|
|
|
|
|
|
// Check whether or not this is an ELF file for the ZipCPU ...
|
|
if (ehdr.e_machine != 0x0dadd) {
|
|
fprintf(stderr, "This is not a ZipCPU ELF file\n");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
// Get our entry address
|
|
entry = ehdr.e_entry;
|
|
|
|
|
|
// Now, let's go look at the program header
|
|
if (elf_getphdrnum(e, &n) != 0) {
|
|
fprintf(stderr, "elf_getphdrnum() failed: %s\n", elf_errmsg(-1));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
unsigned total_octets = 0, current_offset=0, current_section=0;
|
|
for(i=0; i<(int)n; i++) {
|
|
total_octets += sizeof(SECTION *)+sizeof(SECTION);
|
|
|
|
if (gelf_getphdr(e, i, &phdr) != &phdr) {
|
|
fprintf(stderr, "getphdr() failed: %s\n", elf_errmsg(-1));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (dbg) {
|
|
printf(" %-20s 0x%x\n", "p_type", phdr.p_type);
|
|
printf(" %-20s 0x%jx\n", "p_offset", phdr.p_offset);
|
|
printf(" %-20s 0x%jx\n", "p_vaddr", phdr.p_vaddr);
|
|
printf(" %-20s 0x%jx\n", "p_paddr", phdr.p_paddr);
|
|
printf(" %-20s 0x%jx\n", "p_filesz", phdr.p_filesz);
|
|
printf(" %-20s 0x%jx\n", "p_memsz", phdr.p_memsz);
|
|
printf(" %-20s 0x%x [", "p_flags", phdr.p_flags);
|
|
|
|
if (phdr.p_flags & PF_X) printf(" Execute");
|
|
if (phdr.p_flags & PF_R) printf(" Read");
|
|
if (phdr.p_flags & PF_W) printf(" Write");
|
|
printf("]\n");
|
|
printf(" %-20s 0x%jx\n", "p_align", phdr.p_align);
|
|
}
|
|
|
|
total_octets += phdr.p_memsz;
|
|
}
|
|
|
|
char *d = (char *)malloc(total_octets + sizeof(SECTION)+sizeof(SECTION *));
|
|
memset(d, 0, total_octets);
|
|
|
|
SECTION **r = sections = (SECTION **)d;
|
|
current_offset = (n+1)*sizeof(SECTION *);
|
|
current_section = 0;
|
|
|
|
for(i=0; i<(int)n; i++) {
|
|
r[i] = (SECTION *)(&d[current_offset]);
|
|
|
|
if (gelf_getphdr(e, i, &phdr) != &phdr) {
|
|
fprintf(stderr, "getphdr() failed: %s\n", elf_errmsg(-1));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (dbg) {
|
|
printf(" %-20s 0x%jx\n", "p_offset", phdr.p_offset);
|
|
printf(" %-20s 0x%jx\n", "p_vaddr", phdr.p_vaddr);
|
|
printf(" %-20s 0x%jx\n", "p_paddr", phdr.p_paddr);
|
|
printf(" %-20s 0x%jx\n", "p_filesz", phdr.p_filesz);
|
|
printf(" %-20s 0x%jx\n", "p_memsz", phdr.p_memsz);
|
|
printf(" %-20s 0x%x [", "p_flags", phdr.p_flags);
|
|
|
|
if (phdr.p_flags & PF_X) printf(" Execute");
|
|
if (phdr.p_flags & PF_R) printf(" Read");
|
|
if (phdr.p_flags & PF_W) printf(" Write");
|
|
printf("]\n");
|
|
|
|
printf(" %-20s 0x%jx\n", "p_align", phdr.p_align);
|
|
}
|
|
|
|
current_section++;
|
|
|
|
r[i]->m_start = phdr.p_vaddr;
|
|
r[i]->m_len = phdr.p_filesz/ sizeof(BUSW);
|
|
|
|
current_offset += phdr.p_memsz + sizeof(SECTION);
|
|
|
|
// Now, let's read in our section ...
|
|
if (lseek(fd, phdr.p_offset, SEEK_SET) < 0) {
|
|
fprintf(stderr, "Could not seek to file position %08lx\n", phdr.p_offset);
|
|
perror("O/S Err:");
|
|
exit(EXIT_FAILURE);
|
|
} if (phdr.p_filesz > phdr.p_memsz)
|
|
phdr.p_filesz = 0;
|
|
if (read(fd, r[i]->m_data, phdr.p_filesz) != (int)phdr.p_filesz) {
|
|
fprintf(stderr, "Didnt read entire section\n");
|
|
perror("O/S Err:");
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
// Next, we need to byte swap it from big to little endian
|
|
for(unsigned j=0; j<r[i]->m_len; j++)
|
|
r[i]->m_data[j] = byteswap(r[i]->m_data[j]);
|
|
|
|
if (dbg) for(unsigned j=0; j<r[i]->m_len; j++)
|
|
fprintf(stderr, "ADR[%04x] = %08x\n", r[i]->m_start+j,
|
|
r[i]->m_data[j]);
|
|
}
|
|
|
|
r[i] = (SECTION *)(&d[current_offset]);
|
|
r[current_section]->m_start = 0;
|
|
r[current_section]->m_len = 0;
|
|
|
|
elf_end(e);
|
|
close(fd);
|
|
}
|
|
|
|
|
void usage(void) {
|
void usage(void) {
|
fprintf(stderr, "Usage: zip_sim flash_program\n");
|
fprintf(stderr, "Usage: zip_sim flash_program\n");
|
}
|
}
|
|
|
int main(int argc, char **argv) {
|
int main(int argc, char **argv) {
|
| Line 174... |
Line 478... |
|
|
if (access(codef, R_OK)!=0)
|
if (access(codef, R_OK)!=0)
|
fprintf(stderr, "Cannot read code filename, %s\n", codef);
|
fprintf(stderr, "Cannot read code filename, %s\n", codef);
|
|
|
if (iself(codef)) {
|
if (iself(codef)) {
|
char tmpbuf[TMP_MAX], cmdbuf[256];
|
SECTION **secpp, *secp;
|
int unused_fd;
|
BUSW entry;
|
strcpy(tmpbuf, "/var/tmp/zipsimXXXX");
|
elfread(codef, entry, secpp);
|
|
|
// Make a temporary file
|
for(int i=0; secpp[i]->m_len; i++) {
|
unused_fd = mkostemp(tmpbuf, O_CREAT|O_TRUNC|O_RDWR);
|
secp = secpp[i];
|
// Close it, though, since we don't want to write to it here
|
tb->m_flash.write(secp->m_start, secp->m_len, secp->m_data);
|
close(unused_fd);
|
|
|
|
// Now we right to it, as part of calling objcopy
|
|
sprintf(cmdbuf, "zip-objcopy -S -O binary --reverse-bytes=4 %s %s\n",
|
|
codef, tmpbuf);
|
|
if (system(cmdbuf) != 0) {
|
|
unlink(tmpbuf);
|
|
fprintf(stderr, "ZIP_SIM::Could not convert ELF binary to a raw file\n");
|
|
exit(-2);
|
|
}
|
}
|
|
|
tb->m_flash.load(0x0400, tmpbuf);
|
|
unlink(tmpbuf);
|
|
} else {
|
} else {
|
tb->m_flash.load(0x0400, codef);
|
tb->m_flash.load(RESET_ADDRESS, codef);
|
}
|
}
|
|
|
tb->reset();
|
tb->reset();
|
|
|
while(1)
|
while(1)
|
| Line 207... |
Line 499... |
|
|
printf("SUCCESS!\n");
|
printf("SUCCESS!\n");
|
exit(0);
|
exit(0);
|
}
|
}
|
|
|
|
|
No newline at end of file
|
No newline at end of file
|
