diff options
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/elfload.c | 32 | ||||
| -rw-r--r-- | linux-user/main.c | 15 | ||||
| -rw-r--r-- | linux-user/mmap.c | 56 |
3 files changed, 59 insertions, 44 deletions
diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 21261e2c0c..cfc4256974 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -13,6 +13,16 @@ #include "qemu.h" #include "disas.h" +/* this flag is uneffective under linux too, should be deleted */ +#ifndef MAP_DENYWRITE +#define MAP_DENYWRITE 0 +#endif + +/* should probably go in elf.h */ +#ifndef ELIBBAD +#define ELIBBAD 80 +#endif + #ifdef TARGET_I386 #define ELF_START_MMAP 0x80000000 @@ -332,7 +342,7 @@ static void * get_free_page(void) /* User-space version of kernel get_free_page. Returns a page-aligned * page-sized chunk of memory. */ - retval = (void *)target_mmap(0, host_page_size, PROT_READ|PROT_WRITE, + retval = (void *)target_mmap(0, qemu_host_page_size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); if((long)retval == -1) { @@ -346,7 +356,7 @@ static void * get_free_page(void) static void free_page(void * pageaddr) { - target_munmap((unsigned long)pageaddr, host_page_size); + target_munmap((unsigned long)pageaddr, qemu_host_page_size); } /* @@ -502,7 +512,7 @@ unsigned long setup_arg_pages(unsigned long p, struct linux_binprm * bprm, if (size < MAX_ARG_PAGES*TARGET_PAGE_SIZE) size = MAX_ARG_PAGES*TARGET_PAGE_SIZE; error = target_mmap(0, - size + host_page_size, + size + qemu_host_page_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); @@ -511,7 +521,7 @@ unsigned long setup_arg_pages(unsigned long p, struct linux_binprm * bprm, exit(-1); } /* we reserve one extra page at the top of the stack as guard */ - target_mprotect(error + size, host_page_size, PROT_NONE); + target_mprotect(error + size, qemu_host_page_size, PROT_NONE); stack_base = error + size - MAX_ARG_PAGES*TARGET_PAGE_SIZE; p += stack_base; @@ -562,10 +572,10 @@ static void padzero(unsigned long elf_bss) of the file may not be mapped. A better fix would be to patch target_mmap(), but it is more complicated as the file size must be known */ - if (real_host_page_size < host_page_size) { + if (qemu_real_host_page_size < qemu_host_page_size) { unsigned long end_addr, end_addr1; - end_addr1 = (elf_bss + real_host_page_size - 1) & - ~(real_host_page_size - 1); + end_addr1 = (elf_bss + qemu_real_host_page_size - 1) & + ~(qemu_real_host_page_size - 1); end_addr = HOST_PAGE_ALIGN(elf_bss); if (end_addr1 < end_addr) { mmap((void *)end_addr1, end_addr - end_addr1, @@ -574,9 +584,9 @@ static void padzero(unsigned long elf_bss) } } - nbyte = elf_bss & (host_page_size-1); + nbyte = elf_bss & (qemu_host_page_size-1); if (nbyte) { - nbyte = host_page_size - nbyte; + nbyte = qemu_host_page_size - nbyte; fpnt = (char *) elf_bss; do { *fpnt++ = 0; @@ -811,7 +821,7 @@ static unsigned long load_elf_interp(struct elfhdr * interp_elf_ex, * bss page. */ padzero(elf_bss); - elf_bss = TARGET_ELF_PAGESTART(elf_bss + host_page_size - 1); /* What we have mapped so far */ + elf_bss = TARGET_ELF_PAGESTART(elf_bss + qemu_host_page_size - 1); /* What we have mapped so far */ /* Map the last of the bss segment */ if (last_bss > elf_bss) { @@ -1252,7 +1262,7 @@ static int load_elf_binary(struct linux_binprm * bprm, struct target_pt_regs * r and some applications "depend" upon this behavior. Since we do not have the power to recompile these, we emulate the SVr4 behavior. Sigh. */ - mapped_addr = target_mmap(0, host_page_size, PROT_READ | PROT_EXEC, + mapped_addr = target_mmap(0, qemu_host_page_size, PROT_READ | PROT_EXEC, MAP_FIXED | MAP_PRIVATE, -1, 0); } diff --git a/linux-user/main.c b/linux-user/main.c index 2275b01f97..00afaafa75 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -28,6 +28,11 @@ #define DEBUG_LOGFILE "/tmp/qemu.log" +#ifdef __APPLE__ +#include <crt_externs.h> +# define environ (*_NSGetEnviron()) +#endif + static const char *interp_prefix = CONFIG_QEMU_PREFIX; #if defined(__i386__) && !defined(CONFIG_STATIC) @@ -977,9 +982,9 @@ int main(int argc, char **argv) } else if (!strcmp(r, "L")) { interp_prefix = argv[optind++]; } else if (!strcmp(r, "p")) { - host_page_size = atoi(argv[optind++]); - if (host_page_size == 0 || - (host_page_size & (host_page_size - 1)) != 0) { + qemu_host_page_size = atoi(argv[optind++]); + if (qemu_host_page_size == 0 || + (qemu_host_page_size & (qemu_host_page_size - 1)) != 0) { fprintf(stderr, "page size must be a power of two\n"); exit(1); } @@ -1006,8 +1011,8 @@ int main(int argc, char **argv) /* Scan interp_prefix dir for replacement files. */ init_paths(interp_prefix); - /* NOTE: we need to init the CPU at this stage to get the - host_page_size */ + /* NOTE: we need to init the CPU at this stage to get + qemu_host_page_size */ env = cpu_init(); if (elf_exec(filename, argv+optind, environ, regs, info) != 0) { diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 312af9b1de..81233035d9 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -53,7 +53,7 @@ int target_mprotect(unsigned long start, unsigned long len, int prot) if (len == 0) return 0; - host_start = start & host_page_mask; + host_start = start & qemu_host_page_mask; host_end = HOST_PAGE_ALIGN(end); if (start > host_start) { /* handle host page containing start */ @@ -61,27 +61,27 @@ int target_mprotect(unsigned long start, unsigned long len, int prot) for(addr = host_start; addr < start; addr += TARGET_PAGE_SIZE) { prot1 |= page_get_flags(addr); } - if (host_end == host_start + host_page_size) { + if (host_end == host_start + qemu_host_page_size) { for(addr = end; addr < host_end; addr += TARGET_PAGE_SIZE) { prot1 |= page_get_flags(addr); } end = host_end; } - ret = mprotect((void *)host_start, host_page_size, prot1 & PAGE_BITS); + ret = mprotect((void *)host_start, qemu_host_page_size, prot1 & PAGE_BITS); if (ret != 0) return ret; - host_start += host_page_size; + host_start += qemu_host_page_size; } if (end < host_end) { prot1 = prot; for(addr = end; addr < host_end; addr += TARGET_PAGE_SIZE) { prot1 |= page_get_flags(addr); } - ret = mprotect((void *)(host_end - host_page_size), host_page_size, + ret = mprotect((void *)(host_end - qemu_host_page_size), qemu_host_page_size, prot1 & PAGE_BITS); if (ret != 0) return ret; - host_end -= host_page_size; + host_end -= qemu_host_page_size; } /* handle the pages in the middle */ @@ -102,7 +102,7 @@ int mmap_frag(unsigned long host_start, unsigned long host_end, ret, addr; int prot1, prot_new; - host_end = host_start + host_page_size; + host_end = host_start + qemu_host_page_size; /* get the protection of the target pages outside the mapping */ prot1 = 0; @@ -113,7 +113,7 @@ int mmap_frag(unsigned long host_start, if (prot1 == 0) { /* no page was there, so we allocate one */ - ret = (long)mmap((void *)host_start, host_page_size, prot, + ret = (long)mmap((void *)host_start, qemu_host_page_size, prot, flags | MAP_ANONYMOUS, -1, 0); if (ret == -1) return ret; @@ -130,18 +130,18 @@ int mmap_frag(unsigned long host_start, /* adjust protection to be able to read */ if (!(prot1 & PROT_WRITE)) - mprotect((void *)host_start, host_page_size, prot1 | PROT_WRITE); + mprotect((void *)host_start, qemu_host_page_size, prot1 | PROT_WRITE); /* read the corresponding file data */ pread(fd, (void *)start, end - start, offset); /* put final protection */ if (prot_new != (prot1 | PROT_WRITE)) - mprotect((void *)host_start, host_page_size, prot_new); + mprotect((void *)host_start, qemu_host_page_size, prot_new); } else { /* just update the protection */ if (prot_new != prot1) { - mprotect((void *)host_start, host_page_size, prot_new); + mprotect((void *)host_start, qemu_host_page_size, prot_new); } } return 0; @@ -188,7 +188,7 @@ long target_mmap(unsigned long start, unsigned long len, int prot, len = TARGET_PAGE_ALIGN(len); if (len == 0) return start; - host_start = start & host_page_mask; + host_start = start & qemu_host_page_mask; if (!(flags & MAP_FIXED)) { #if defined(__alpha__) || defined(__sparc__) || defined(__x86_64__) @@ -198,10 +198,10 @@ long target_mmap(unsigned long start, unsigned long len, int prot, last_start += HOST_PAGE_ALIGN(len); } #endif - if (host_page_size != real_host_page_size) { + if (qemu_host_page_size != qemu_real_host_page_size) { /* NOTE: this code is only for debugging with '-p' option */ /* reserve a memory area */ - host_len = HOST_PAGE_ALIGN(len) + host_page_size - TARGET_PAGE_SIZE; + host_len = HOST_PAGE_ALIGN(len) + qemu_host_page_size - TARGET_PAGE_SIZE; host_start = (long)mmap((void *)host_start, host_len, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); if (host_start == -1) @@ -217,7 +217,7 @@ long target_mmap(unsigned long start, unsigned long len, int prot, flags |= MAP_FIXED; } else { /* if not fixed, no need to do anything */ - host_offset = offset & host_page_mask; + host_offset = offset & qemu_host_page_mask; host_len = len + offset - host_offset; start = (long)mmap((void *)host_start, host_len, prot, flags, fd, host_offset); @@ -238,7 +238,7 @@ long target_mmap(unsigned long start, unsigned long len, int prot, /* worst case: we cannot map the file because the offset is not aligned, so we read it */ if (!(flags & MAP_ANONYMOUS) && - (offset & ~host_page_mask) != (start & ~host_page_mask)) { + (offset & ~qemu_host_page_mask) != (start & ~qemu_host_page_mask)) { /* msync() won't work here, so we return an error if write is possible while it is a shared mapping */ if ((flags & MAP_TYPE) == MAP_SHARED && @@ -260,7 +260,7 @@ long target_mmap(unsigned long start, unsigned long len, int prot, /* handle the start of the mapping */ if (start > host_start) { - if (host_end == host_start + host_page_size) { + if (host_end == host_start + qemu_host_page_size) { /* one single host page */ ret = mmap_frag(host_start, start, end, prot, flags, fd, offset); @@ -268,21 +268,21 @@ long target_mmap(unsigned long start, unsigned long len, int prot, return ret; goto the_end1; } - ret = mmap_frag(host_start, start, host_start + host_page_size, + ret = mmap_frag(host_start, start, host_start + qemu_host_page_size, prot, flags, fd, offset); if (ret == -1) return ret; - host_start += host_page_size; + host_start += qemu_host_page_size; } /* handle the end of the mapping */ if (end < host_end) { - ret = mmap_frag(host_end - host_page_size, - host_end - host_page_size, host_end, + ret = mmap_frag(host_end - qemu_host_page_size, + host_end - qemu_host_page_size, host_end, prot, flags, fd, - offset + host_end - host_page_size - start); + offset + host_end - qemu_host_page_size - start); if (ret == -1) return ret; - host_end -= host_page_size; + host_end -= qemu_host_page_size; } /* map the middle (easier) */ @@ -322,7 +322,7 @@ int target_munmap(unsigned long start, unsigned long len) if (len == 0) return -EINVAL; end = start + len; - host_start = start & host_page_mask; + host_start = start & qemu_host_page_mask; host_end = HOST_PAGE_ALIGN(end); if (start > host_start) { @@ -331,14 +331,14 @@ int target_munmap(unsigned long start, unsigned long len) for(addr = host_start; addr < start; addr += TARGET_PAGE_SIZE) { prot |= page_get_flags(addr); } - if (host_end == host_start + host_page_size) { + if (host_end == host_start + qemu_host_page_size) { for(addr = end; addr < host_end; addr += TARGET_PAGE_SIZE) { prot |= page_get_flags(addr); } end = host_end; } if (prot != 0) - host_start += host_page_size; + host_start += qemu_host_page_size; } if (end < host_end) { prot = 0; @@ -346,7 +346,7 @@ int target_munmap(unsigned long start, unsigned long len) prot |= page_get_flags(addr); } if (prot != 0) - host_end -= host_page_size; + host_end -= qemu_host_page_size; } /* unmap what we can */ @@ -391,7 +391,7 @@ int target_msync(unsigned long start, unsigned long len, int flags) if (end == start) return 0; - start &= host_page_mask; + start &= qemu_host_page_mask; return msync((void *)start, end - start, flags); } |