From: Roman Kiryanov <rkir@google.com>
To: qemu-devel@nongnu.org
Cc: jansene@google.com, mett@google.com, jpcottin@google.com,
Roman Kiryanov <rkir@google.com>
Subject: [PATCH 3/3] exec: use char* for pointer arithmetic
Date: Tue, 18 Jun 2024 15:46:04 -0700 [thread overview]
Message-ID: <20240618224604.879275-1-rkir@google.com> (raw)
void* pointer arithmetic is not in the
C standard. This change allows using
the QEMU headers with a C++ compiler.
Google-Bug-Id: 331190993
Change-Id: I5a064853429f627c17a9213910811dea4ced6174
Signed-off-by: Roman Kiryanov <rkir@google.com>
---
include/exec/memory.h | 8 ++++----
include/exec/memory_ldst_cached.h.inc | 12 ++++++------
2 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/include/exec/memory.h b/include/exec/memory.h
index d7591a60d9..738e4cef2c 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -2839,7 +2839,7 @@ static inline uint8_t address_space_ldub_cached(MemoryRegionCache *cache,
{
assert(addr < cache->len);
if (likely(cache->ptr)) {
- return ldub_p(cache->ptr + addr);
+ return ldub_p((char*)cache->ptr + addr);
} else {
return address_space_ldub_cached_slow(cache, addr, attrs, result);
}
@@ -2850,7 +2850,7 @@ static inline void address_space_stb_cached(MemoryRegionCache *cache,
{
assert(addr < cache->len);
if (likely(cache->ptr)) {
- stb_p(cache->ptr + addr, val);
+ stb_p((char*)cache->ptr + addr, val);
} else {
address_space_stb_cached_slow(cache, addr, val, attrs, result);
}
@@ -3123,7 +3123,7 @@ address_space_read_cached(MemoryRegionCache *cache, hwaddr addr,
assert(addr < cache->len && len <= cache->len - addr);
fuzz_dma_read_cb(cache->xlat + addr, len, cache->mrs.mr);
if (likely(cache->ptr)) {
- memcpy(buf, cache->ptr + addr, len);
+ memcpy(buf, (char*)cache->ptr + addr, len);
return MEMTX_OK;
} else {
return address_space_read_cached_slow(cache, addr, buf, len);
@@ -3144,7 +3144,7 @@ address_space_write_cached(MemoryRegionCache *cache, hwaddr addr,
{
assert(addr < cache->len && len <= cache->len - addr);
if (likely(cache->ptr)) {
- memcpy(cache->ptr + addr, buf, len);
+ memcpy((char*)cache->ptr + addr, buf, len);
return MEMTX_OK;
} else {
return address_space_write_cached_slow(cache, addr, buf, len);
diff --git a/include/exec/memory_ldst_cached.h.inc b/include/exec/memory_ldst_cached.h.inc
index d7834f852c..f767e53a3d 100644
--- a/include/exec/memory_ldst_cached.h.inc
+++ b/include/exec/memory_ldst_cached.h.inc
@@ -30,7 +30,7 @@ static inline uint16_t ADDRESS_SPACE_LD_CACHED(uw)(MemoryRegionCache *cache,
assert(addr < cache->len && 2 <= cache->len - addr);
fuzz_dma_read_cb(cache->xlat + addr, 2, cache->mrs.mr);
if (likely(cache->ptr)) {
- return LD_P(uw)(cache->ptr + addr);
+ return LD_P(uw)((char*)cache->ptr + addr);
} else {
return ADDRESS_SPACE_LD_CACHED_SLOW(uw)(cache, addr, attrs, result);
}
@@ -42,7 +42,7 @@ static inline uint32_t ADDRESS_SPACE_LD_CACHED(l)(MemoryRegionCache *cache,
assert(addr < cache->len && 4 <= cache->len - addr);
fuzz_dma_read_cb(cache->xlat + addr, 4, cache->mrs.mr);
if (likely(cache->ptr)) {
- return LD_P(l)(cache->ptr + addr);
+ return LD_P(l)((char*)cache->ptr + addr);
} else {
return ADDRESS_SPACE_LD_CACHED_SLOW(l)(cache, addr, attrs, result);
}
@@ -54,7 +54,7 @@ static inline uint64_t ADDRESS_SPACE_LD_CACHED(q)(MemoryRegionCache *cache,
assert(addr < cache->len && 8 <= cache->len - addr);
fuzz_dma_read_cb(cache->xlat + addr, 8, cache->mrs.mr);
if (likely(cache->ptr)) {
- return LD_P(q)(cache->ptr + addr);
+ return LD_P(q)((char*)cache->ptr + addr);
} else {
return ADDRESS_SPACE_LD_CACHED_SLOW(q)(cache, addr, attrs, result);
}
@@ -76,7 +76,7 @@ static inline void ADDRESS_SPACE_ST_CACHED(w)(MemoryRegionCache *cache,
{
assert(addr < cache->len && 2 <= cache->len - addr);
if (likely(cache->ptr)) {
- ST_P(w)(cache->ptr + addr, val);
+ ST_P(w)((char*)cache->ptr + addr, val);
} else {
ADDRESS_SPACE_ST_CACHED_SLOW(w)(cache, addr, val, attrs, result);
}
@@ -87,7 +87,7 @@ static inline void ADDRESS_SPACE_ST_CACHED(l)(MemoryRegionCache *cache,
{
assert(addr < cache->len && 4 <= cache->len - addr);
if (likely(cache->ptr)) {
- ST_P(l)(cache->ptr + addr, val);
+ ST_P(l)((char*)cache->ptr + addr, val);
} else {
ADDRESS_SPACE_ST_CACHED_SLOW(l)(cache, addr, val, attrs, result);
}
@@ -98,7 +98,7 @@ static inline void ADDRESS_SPACE_ST_CACHED(q)(MemoryRegionCache *cache,
{
assert(addr < cache->len && 8 <= cache->len - addr);
if (likely(cache->ptr)) {
- ST_P(q)(cache->ptr + addr, val);
+ ST_P(q)((char*)cache->ptr + addr, val);
} else {
ADDRESS_SPACE_ST_CACHED_SLOW(q)(cache, addr, val, attrs, result);
}
--
2.45.2.627.g7a2c4fd464-goog
next reply other threads:[~2024-06-18 22:46 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-18 22:46 Roman Kiryanov [this message]
2024-06-18 23:05 ` [PATCH 3/3] exec: use char* for pointer arithmetic Richard Henderson
2024-06-19 0:09 ` Roman Kiryanov
2024-06-19 8:05 ` Daniel P. Berrangé
2024-06-20 15:10 ` Alex Bennée
2024-06-20 16:23 ` Roman Kiryanov
2024-06-20 19:09 ` Peter Maydell
2024-06-20 20:23 ` Roman Kiryanov
2024-06-20 18:06 ` Paolo Bonzini
2024-06-20 18:14 ` Richard Henderson
2024-06-20 18:16 ` Paolo Bonzini
2024-06-20 18:27 ` Roman Kiryanov
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