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endianness and portability fixes

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@434 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-10-30 01:11:23 +00:00
parent aebcb60e55
commit 7f7f987341
1 changed files with 56 additions and 34 deletions
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90
vl.c
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@ -3319,6 +3319,12 @@ static void host_alarm_handler(int host_signum, siginfo_t *info,
}
}
#ifdef CONFIG_SOFTMMU
void *get_mmap_addr(unsigned long size)
{
return NULL;
}
#else
unsigned long mmap_addr = PHYS_RAM_BASE;
void *get_mmap_addr(unsigned long size)
@ -3328,6 +3334,7 @@ void *get_mmap_addr(unsigned long size)
mmap_addr += ((size + 4095) & ~4095) + 4096;
return (void *)addr;
}
#endif
/* main execution loop */
@ -3522,7 +3529,7 @@ int main(int argc, char **argv)
struct sigaction act;
struct itimerval itv;
CPUX86State *env;
const char *tmpdir, *initrd_filename;
const char *initrd_filename;
const char *hd_filename[MAX_DISKS];
const char *kernel_filename, *kernel_cmdline;
DisplayState *ds = &display_state;
@ -3644,32 +3651,47 @@ int main(int argc, char **argv)
net_init();
/* init the memory */
tmpdir = getenv("QEMU_TMPDIR");
if (!tmpdir)
tmpdir = "/tmp";
snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/vlXXXXXX", tmpdir);
if (mkstemp(phys_ram_file) < 0) {
fprintf(stderr, "Could not create temporary memory file '%s'\n",
phys_ram_file);
exit(1);
}
phys_ram_fd = open(phys_ram_file, O_CREAT | O_TRUNC | O_RDWR, 0600);
if (phys_ram_fd < 0) {
fprintf(stderr, "Could not open temporary memory file '%s'\n",
phys_ram_file);
exit(1);
}
total_ram_size = phys_ram_size + vga_ram_size;
ftruncate(phys_ram_fd, total_ram_size);
unlink(phys_ram_file);
phys_ram_base = mmap(get_mmap_addr(total_ram_size),
total_ram_size,
PROT_WRITE | PROT_READ, MAP_SHARED | MAP_FIXED,
phys_ram_fd, 0);
if (phys_ram_base == MAP_FAILED) {
fprintf(stderr, "Could not map physical memory\n");
#ifdef CONFIG_SOFTMMU
phys_ram_base = malloc(total_ram_size);
if (!phys_ram_base) {
fprintf(stderr, "Could not allocate physical memory\n");
exit(1);
}
#else
/* as we must map the same page at several addresses, we must use
a fd */
{
const char *tmpdir;
tmpdir = getenv("QEMU_TMPDIR");
if (!tmpdir)
tmpdir = "/tmp";
snprintf(phys_ram_file, sizeof(phys_ram_file), "%s/vlXXXXXX", tmpdir);
if (mkstemp(phys_ram_file) < 0) {
fprintf(stderr, "Could not create temporary memory file '%s'\n",
phys_ram_file);
exit(1);
}
phys_ram_fd = open(phys_ram_file, O_CREAT | O_TRUNC | O_RDWR, 0600);
if (phys_ram_fd < 0) {
fprintf(stderr, "Could not open temporary memory file '%s'\n",
phys_ram_file);
exit(1);
}
ftruncate(phys_ram_fd, total_ram_size);
unlink(phys_ram_file);
phys_ram_base = mmap(get_mmap_addr(total_ram_size),
total_ram_size,
PROT_WRITE | PROT_READ, MAP_SHARED | MAP_FIXED,
phys_ram_fd, 0);
if (phys_ram_base == MAP_FAILED) {
fprintf(stderr, "Could not map physical memory\n");
exit(1);
}
}
#endif
/* open the virtual block devices */
for(i = 0; i < MAX_DISKS; i++) {
@ -3717,14 +3739,14 @@ int main(int argc, char **argv)
params = (void *)(phys_ram_base + KERNEL_PARAMS_ADDR);
memset(params, 0, sizeof(struct linux_params));
params->mount_root_rdonly = 0;
params->cl_magic = 0xA33F;
params->cl_offset = params->commandline - (uint8_t *)params;
params->alt_mem_k = (phys_ram_size / 1024) - 1024;
stw_raw(&params->cl_magic, 0xA33F);
stw_raw(&params->cl_offset, params->commandline - (uint8_t *)params);
stl_raw(&params->alt_mem_k, (phys_ram_size / 1024) - 1024);
pstrcat(params->commandline, sizeof(params->commandline), kernel_cmdline);
params->loader_type = 0x01;
if (initrd_size > 0) {
params->initrd_start = INITRD_LOAD_ADDR;
params->initrd_size = initrd_size;
stl_raw(&params->initrd_start, INITRD_LOAD_ADDR);
stl_raw(&params->initrd_size, initrd_size);
}
params->orig_video_lines = 25;
params->orig_video_cols = 80;
@ -3735,11 +3757,11 @@ int main(int argc, char **argv)
memset(params->idt_table, 0, sizeof(params->idt_table));
params->gdt_table[2] = 0x00cf9a000000ffffLL; /* KERNEL_CS */
params->gdt_table[3] = 0x00cf92000000ffffLL; /* KERNEL_DS */
stq_raw(&params->gdt_table[2], 0x00cf9a000000ffffLL); /* KERNEL_CS */
stq_raw(&params->gdt_table[3], 0x00cf92000000ffffLL); /* KERNEL_DS */
/* for newer kernels (2.6.0) CS/DS are at different addresses */
params->gdt_table[12] = 0x00cf9a000000ffffLL; /* KERNEL_CS */
params->gdt_table[13] = 0x00cf92000000ffffLL; /* KERNEL_DS */
stq_raw(&params->gdt_table[12], 0x00cf9a000000ffffLL); /* KERNEL_CS */
stq_raw(&params->gdt_table[13], 0x00cf92000000ffffLL); /* KERNEL_DS */
env->idt.base = (void *)((uint8_t *)params->idt_table - phys_ram_base);
env->idt.limit = sizeof(params->idt_table) - 1;
@ -3844,7 +3866,7 @@ int main(int argc, char **argv)
timer_ms = itv.it_interval.tv_usec / 1000;
pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * PIT_FREQ) /
1000000;
if (use_gdbstub) {
cpu_gdbstub(NULL, main_loop, gdbstub_port);
} else {