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https://github.com/xemu-project/xemu.git
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fe87aa83c6
Edited report from pahole on amd64 host:
struct PCNetState_st {
...
uint16_t bcr[32]; /* 340 64 */
/* XXX 4 bytes hole, try to pack */
...
int tx_busy; /* 4520 4 */
/* XXX 4 bytes hole, try to pack */
qemu_irq irq; /* 4528 8 */
void (*phys_mem_read)(void *, target_phys_addr_t, uint8_t *, int, int); /* 4536 8 */
/* --- cacheline 71 boundary (4544 bytes) --- */
void (*phys_mem_write)(void *, target_phys_addr_t, uint8_t *, int, int); /* 4544 8 */
void * dma_opaque; /* 4552 8 */
int looptest; /* 4560 4 */
/* size: 4568, cachelines: 72 */
/* sum members: 4556, holes: 2, sum holes: 8 */
/* padding: 4 */
/* last cacheline: 24 bytes */
}; /* definitions: 2 */
Fix by rearranging the structure to avoid padding.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
#define PCNET_IOPORT_SIZE 0x20
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#define PCNET_PNPMMIO_SIZE 0x20
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#define PCNET_LOOPTEST_CRC 1
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#define PCNET_LOOPTEST_NOCRC 2
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#include "memory.h"
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typedef struct PCNetState_st PCNetState;
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struct PCNetState_st {
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NICState *nic;
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NICConf conf;
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QEMUTimer *poll_timer;
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int rap, isr, lnkst;
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uint32_t rdra, tdra;
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uint8_t prom[16];
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uint16_t csr[128];
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uint16_t bcr[32];
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int xmit_pos;
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uint64_t timer;
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MemoryRegion mmio;
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uint8_t buffer[4096];
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qemu_irq irq;
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void (*phys_mem_read)(void *dma_opaque, target_phys_addr_t addr,
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uint8_t *buf, int len, int do_bswap);
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void (*phys_mem_write)(void *dma_opaque, target_phys_addr_t addr,
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uint8_t *buf, int len, int do_bswap);
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void *dma_opaque;
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int tx_busy;
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int looptest;
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};
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void pcnet_h_reset(void *opaque);
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void pcnet_ioport_writew(void *opaque, uint32_t addr, uint32_t val);
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uint32_t pcnet_ioport_readw(void *opaque, uint32_t addr);
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void pcnet_ioport_writel(void *opaque, uint32_t addr, uint32_t val);
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uint32_t pcnet_ioport_readl(void *opaque, uint32_t addr);
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uint32_t pcnet_bcr_readw(PCNetState *s, uint32_t rap);
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int pcnet_can_receive(VLANClientState *nc);
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ssize_t pcnet_receive(VLANClientState *nc, const uint8_t *buf, size_t size_);
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void pcnet_common_cleanup(PCNetState *d);
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int pcnet_common_init(DeviceState *dev, PCNetState *s, NetClientInfo *info);
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extern const VMStateDescription vmstate_pcnet;
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