Merge tag 'pull-target-arm-20240311' of https://git.linaro.org/people…

…/pmaydell/qemu-arm into staging target-arm queue: * contrib/elf2dmp: Improve robustness to corrupt input files * docs: update copyright date to the year 2024 * hw/arm: Deprecate various old Arm machine types # -----BEGIN PGP SIGNATURE----- # # iQJNBAABCAA3FiEE4aXFk81BneKOgxXPPCUl7RQ2DN4FAmXvV4gZHHBldGVyLm1h # eWRlbGxAbGluYXJvLm9yZwAKCRA8JSXtFDYM3oe5EACvvve9LOJ7UA4teEbn8zzs # O7GGsycpu3XWINX98sUi5Cuu+uexkcXsHf2Vg8GABj2fUuA+EEqPIdIWZhVcfB2t # RYGPgat/JVTwRUsl38OQ97l4joI2JeW18B20Pmh4/2tbZCJuIHoiHxxb+3aQl6Nl # gz/H137ayy+Q5utt1b6z1qXnw4etiUhk4wg2ltGVtAw63w5GZOvamTicSQ1DC3ZP # zfbIKW2WpGNjzrC1tCvaW/dNojt2blpZbsnpdPsL8cNE8puo01FnFLsUZCzOtu3m # 23uoQq0KjQZBJrU2oZMtshc+sKT/FGPADJ9B+J8jjU0EY6cV+Qo7FT4E78mxzoR0 # JbY9SLATtY7RE1Fbh3/Am+3OEyb3ZDor5nCux0CWOsuFoBk96dzD7r5MXxM2eft1 # pGmdJStYysZkdlSyx61bu6OifHOaGjnOe+lYWpaCrVy1U3cO3hbMWH2siSQygppM # 8EfjyfadzfST+nAnXfduSgWMv7Nc4ql4GIOxVnMIfGig32PIp545IvM9neh6GIp/ # 8fzw6TdoCQkHcWaazV1ibPF0ceH6JwRvLIMkWlNpr/QBSNdsx+zkdh7WZD+3S91U # XrCAA7hgf7OIvHauSD0ucSbztIiFRMROcHxIoh0ui6BermtaD6fnlei4QcsJI17o # 6XZSNSWm5/+JEsn+dcVh4g== # =UHyi # -----END PGP SIGNATURE----- # gpg: Signature made Mon 11 Mar 2024 19:12:08 GMT # gpg: using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE # gpg: issuer "peter.maydell@linaro.org" # gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate] # gpg: aka "Peter Maydell <pmaydell@gmail.com>" [ultimate] # gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate] # gpg: aka "Peter Maydell <peter@archaic.org.uk>" [ultimate] # Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE * tag 'pull-target-arm-20240311' of https://git.linaro.org/people/pmaydell/qemu-arm: docs: update copyright date to the year 2024 contrib/elf2dmp: Ensure phdrs fit in file contrib/elf2dmp: Clamp QEMU note to file size contrib/elf2dmp: Use GPtrArray MAINTAINERS: Add Akihiko Odaki as a elf2dmp reviewer contrib/elf2dmp: Use rol64() to decode contrib/elf2dmp: Use lduw_le_p() to read PDB contrib/elf2dmp: Ensure segment fits in file contrib/elf2dmp: Always destroy PA space contrib/elf2dmp: Always check for PA resolution failure contrib/elf2dmp: Fix error reporting style in main.c contrib/elf2dmp: Fix error reporting style in qemu_elf.c contrib/elf2dmp: Fix error reporting style in pdb.c contrib/elf2dmp: Fix error reporting style in download.c contrib/elf2dmp: Fix error reporting style in addrspace.c contrib/elf2dmp: Change pa_space_create() signature contrib/elf2dmp: Continue even contexts are lacking contrib/elf2dmp: Assume error by default contrib/elf2dmp: Remove unnecessary err flags hw/arm: Deprecate various old Arm machine types Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
qemu · Mar 12, 2024 · 1c26899 · 1c26899
2 parents 05ec974 + 5dd6bfd
commit 1c26899
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Showing 20 changed files with 263 additions and 232 deletions.
diff --git a/MAINTAINERS b/MAINTAINERS
@@ -3587,6 +3587,7 @@ F: util/iova-tree.c
 
 elf2dmp
 M: Viktor Prutyanov <viktor.prutyanov@phystech.edu>
+R: Akihiko Odaki <akihiko.odaki@daynix.com>
 S: Maintained
 F: contrib/elf2dmp/
 

diff --git a/contrib/elf2dmp/addrspace.c b/contrib/elf2dmp/addrspace.c
@@ -22,7 +22,7 @@ static struct pa_block *pa_space_find_block(struct pa_space *ps, uint64_t pa)
     return NULL;
 }
 
-static uint8_t *pa_space_resolve(struct pa_space *ps, uint64_t pa)
+static void *pa_space_resolve(struct pa_space *ps, uint64_t pa)
 {
     struct pa_block *block = pa_space_find_block(ps, pa);
 
@@ -33,6 +33,19 @@ static uint8_t *pa_space_resolve(struct pa_space *ps, uint64_t pa)
     return block->addr + (pa - block->paddr);
 }
 
+static bool pa_space_read64(struct pa_space *ps, uint64_t pa, uint64_t *value)
+{
+    uint64_t *resolved = pa_space_resolve(ps, pa);
+
+    if (!resolved) {
+        return false;
+    }
+
+    *value = *resolved;
+
+    return true;
+}
+
 static void pa_block_align(struct pa_block *b)
 {
     uint64_t low_align = ((b->paddr - 1) | ELF2DMP_PAGE_MASK) + 1 - b->paddr;
@@ -57,7 +70,7 @@ static void pa_block_align(struct pa_block *b)
     b->paddr += low_align;
 }
 
-int pa_space_create(struct pa_space *ps, QEMU_Elf *qemu_elf)
+void pa_space_create(struct pa_space *ps, QEMU_Elf *qemu_elf)
 {
     Elf64_Half phdr_nr = elf_getphdrnum(qemu_elf->map);
     Elf64_Phdr *phdr = elf64_getphdr(qemu_elf->map);
@@ -75,20 +88,19 @@ int pa_space_create(struct pa_space *ps, QEMU_Elf *qemu_elf)
     ps->block = g_new(struct pa_block, ps->block_nr);
 
     for (i = 0; i < phdr_nr; i++) {
-        if (phdr[i].p_type == PT_LOAD) {
+        if (phdr[i].p_type == PT_LOAD && phdr[i].p_offset < qemu_elf->size) {
             ps->block[block_i] = (struct pa_block) {
                 .addr = (uint8_t *)qemu_elf->map + phdr[i].p_offset,
                 .paddr = phdr[i].p_paddr,
-                .size = phdr[i].p_filesz,
+                .size = MIN(phdr[i].p_filesz,
+                            qemu_elf->size - phdr[i].p_offset),
             };
             pa_block_align(&ps->block[block_i]);
             block_i = ps->block[block_i].size ? (block_i + 1) : block_i;
         }
     }
 
     ps->block_nr = block_i;
-
-    return 0;
 }
 
 void pa_space_destroy(struct pa_space *ps)
@@ -108,19 +120,20 @@ void va_space_create(struct va_space *vs, struct pa_space *ps, uint64_t dtb)
     va_space_set_dtb(vs, dtb);
 }
 
-static uint64_t get_pml4e(struct va_space *vs, uint64_t va)
+static bool get_pml4e(struct va_space *vs, uint64_t va, uint64_t *value)
 {
     uint64_t pa = (vs->dtb & 0xffffffffff000) | ((va & 0xff8000000000) >> 36);
 
-    return *(uint64_t *)pa_space_resolve(vs->ps, pa);
+    return pa_space_read64(vs->ps, pa, value);
 }
 
-static uint64_t get_pdpi(struct va_space *vs, uint64_t va, uint64_t pml4e)
+static bool get_pdpi(struct va_space *vs, uint64_t va, uint64_t pml4e,
+                    uint64_t *value)
 {
     uint64_t pdpte_paddr = (pml4e & 0xffffffffff000) |
         ((va & 0x7FC0000000) >> 27);
 
-    return *(uint64_t *)pa_space_resolve(vs->ps, pdpte_paddr);
+    return pa_space_read64(vs->ps, pdpte_paddr, value);
 }
 
 static uint64_t pde_index(uint64_t va)
@@ -133,11 +146,12 @@ static uint64_t pdba_base(uint64_t pdpe)
     return pdpe & 0xFFFFFFFFFF000;
 }
 
-static uint64_t get_pgd(struct va_space *vs, uint64_t va, uint64_t pdpe)
+static bool get_pgd(struct va_space *vs, uint64_t va, uint64_t pdpe,
+                   uint64_t *value)
 {
     uint64_t pgd_entry = pdba_base(pdpe) + pde_index(va) * 8;
 
-    return *(uint64_t *)pa_space_resolve(vs->ps, pgd_entry);
+    return pa_space_read64(vs->ps, pgd_entry, value);
 }
 
 static uint64_t pte_index(uint64_t va)
@@ -150,11 +164,12 @@ static uint64_t ptba_base(uint64_t pde)
     return pde & 0xFFFFFFFFFF000;
 }
 
-static uint64_t get_pte(struct va_space *vs, uint64_t va, uint64_t pgd)
+static bool get_pte(struct va_space *vs, uint64_t va, uint64_t pgd,
+                   uint64_t *value)
 {
     uint64_t pgd_val = ptba_base(pgd) + pte_index(va) * 8;
 
-    return *(uint64_t *)pa_space_resolve(vs->ps, pgd_val);
+    return pa_space_read64(vs->ps, pgd_val, value);
 }
 
 static uint64_t get_paddr(uint64_t va, uint64_t pte)
@@ -186,31 +201,27 @@ static uint64_t va_space_va2pa(struct va_space *vs, uint64_t va)
 {
     uint64_t pml4e, pdpe, pgd, pte;
 
-    pml4e = get_pml4e(vs, va);
-    if (!is_present(pml4e)) {
+    if (!get_pml4e(vs, va, &pml4e) || !is_present(pml4e)) {
         return INVALID_PA;
     }
 
-    pdpe = get_pdpi(vs, va, pml4e);
-    if (!is_present(pdpe)) {
+    if (!get_pdpi(vs, va, pml4e, &pdpe) || !is_present(pdpe)) {
         return INVALID_PA;
     }
 
     if (page_size_flag(pdpe)) {
         return get_1GB_paddr(va, pdpe);
     }
 
-    pgd = get_pgd(vs, va, pdpe);
-    if (!is_present(pgd)) {
+    if (!get_pgd(vs, va, pdpe, &pgd) || !is_present(pgd)) {
         return INVALID_PA;
     }
 
     if (page_size_flag(pgd)) {
         return get_2MB_paddr(va, pgd);
     }
 
-    pte = get_pte(vs, va, pgd);
-    if (!is_present(pte)) {
+    if (!get_pte(vs, va, pgd, &pte) || !is_present(pte)) {
         return INVALID_PA;
     }
 
@@ -228,8 +239,8 @@ void *va_space_resolve(struct va_space *vs, uint64_t va)
     return pa_space_resolve(vs->ps, pa);
 }
 
-int va_space_rw(struct va_space *vs, uint64_t addr,
-        void *buf, size_t size, int is_write)
+bool va_space_rw(struct va_space *vs, uint64_t addr,
+                 void *buf, size_t size, int is_write)
 {
     while (size) {
         uint64_t page = addr & ELF2DMP_PFN_MASK;
@@ -240,7 +251,7 @@ int va_space_rw(struct va_space *vs, uint64_t addr,
 
         ptr = va_space_resolve(vs, addr);
         if (!ptr) {
-            return 1;
+            return false;
         }
 
         if (is_write) {
@@ -254,5 +265,5 @@ int va_space_rw(struct va_space *vs, uint64_t addr,
         addr += s;
     }
 
-    return 0;
+    return true;
 }
diff --git a/contrib/elf2dmp/addrspace.h b/contrib/elf2dmp/addrspace.h
@@ -33,13 +33,13 @@ struct va_space {
     struct pa_space *ps;
 };
 
-int pa_space_create(struct pa_space *ps, QEMU_Elf *qemu_elf);
+void pa_space_create(struct pa_space *ps, QEMU_Elf *qemu_elf);
 void pa_space_destroy(struct pa_space *ps);
 
 void va_space_create(struct va_space *vs, struct pa_space *ps, uint64_t dtb);
 void va_space_set_dtb(struct va_space *vs, uint64_t dtb);
 void *va_space_resolve(struct va_space *vs, uint64_t va);
-int va_space_rw(struct va_space *vs, uint64_t addr,
-        void *buf, size_t size, int is_write);
+bool va_space_rw(struct va_space *vs, uint64_t addr,
+                 void *buf, size_t size, int is_write);
 
 #endif /* ADDRSPACE_H */
diff --git a/contrib/elf2dmp/download.c b/contrib/elf2dmp/download.c
@@ -9,19 +9,18 @@
 #include <curl/curl.h>
 #include "download.h"
 
-int download_url(const char *name, const char *url)
+bool download_url(const char *name, const char *url)
 {
-    int err = 0;
+    bool success = false;
     FILE *file;
     CURL *curl = curl_easy_init();
 
     if (!curl) {
-        return 1;
+        return false;
     }
 
     file = fopen(name, "wb");
     if (!file) {
-        err = 1;
         goto out_curl;
     }
 
@@ -33,13 +32,12 @@ int download_url(const char *name, const char *url)
             || curl_easy_perform(curl) != CURLE_OK) {
         unlink(name);
         fclose(file);
-        err = 1;
     } else {
-        err = fclose(file);
+        success = !fclose(file);
     }
 
 out_curl:
     curl_easy_cleanup(curl);
 
-    return err;
+    return success;
 }
diff --git a/contrib/elf2dmp/download.h b/contrib/elf2dmp/download.h
@@ -8,6 +8,6 @@
 #ifndef DOWNLOAD_H
 #define DOWNLOAD_H
 
-int download_url(const char *name, const char *url);
+bool download_url(const char *name, const char *url);
 
 #endif /* DOWNLOAD_H */