diff options
| author | Helge Deller <deller@gmx.de> | 2024-02-02 21:05:56 +0100 |
|---|---|---|
| committer | Helge Deller <deller@gmx.de> | 2024-02-11 13:20:23 +0100 |
| commit | b7174d9ad3ec3966270eeefa965ffe8f336b86dd (patch) | |
| tree | 7e4adbc428f9c1c851f261fc6e9c567ead89513e /hw/pci-host | |
| parent | dbca083513aeb2ba65fe170f39e535c165abee22 (diff) | |
hw/pci-host/astro: Avoid aborting on access failure
Instead of stopping the emulation, report a MEMTX_DECODE_ERROR if the OS
tries to access non-existent registers.
Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'hw/pci-host')
| -rw-r--r-- | hw/pci-host/astro.c | 27 |
1 files changed, 11 insertions, 16 deletions
diff --git a/hw/pci-host/astro.c b/hw/pci-host/astro.c index 37d271118c..96d655f5fb 100644 --- a/hw/pci-host/astro.c +++ b/hw/pci-host/astro.c @@ -122,10 +122,6 @@ static MemTxResult elroy_chip_read_with_attrs(void *opaque, hwaddr addr, case 0x0800: /* IOSAPIC_REG_SELECT */ val = s->iosapic_reg_select; break; - case 0x0808: - val = UINT64_MAX; /* XXX: tbc. */ - g_assert_not_reached(); - break; case 0x0810: /* IOSAPIC_REG_WINDOW */ switch (s->iosapic_reg_select) { case 0x01: /* IOSAPIC_REG_VERSION */ @@ -135,15 +131,15 @@ static MemTxResult elroy_chip_read_with_attrs(void *opaque, hwaddr addr, if (s->iosapic_reg_select < ARRAY_SIZE(s->iosapic_reg)) { val = s->iosapic_reg[s->iosapic_reg_select]; } else { - trace_iosapic_reg_read(s->iosapic_reg_select, size, val); - g_assert_not_reached(); + val = 0; + ret = MEMTX_DECODE_ERROR; } } trace_iosapic_reg_read(s->iosapic_reg_select, size, val); break; default: - trace_elroy_read(addr, size, val); - g_assert_not_reached(); + val = 0; + ret = MEMTX_DECODE_ERROR; } trace_elroy_read(addr, size, val); @@ -191,7 +187,7 @@ static MemTxResult elroy_chip_write_with_attrs(void *opaque, hwaddr addr, if (s->iosapic_reg_select < ARRAY_SIZE(s->iosapic_reg)) { s->iosapic_reg[s->iosapic_reg_select] = val; } else { - g_assert_not_reached(); + return MEMTX_DECODE_ERROR; } break; case 0x0840: /* IOSAPIC_REG_EOI */ @@ -204,7 +200,7 @@ static MemTxResult elroy_chip_write_with_attrs(void *opaque, hwaddr addr, } break; default: - g_assert_not_reached(); + return MEMTX_DECODE_ERROR; } return MEMTX_OK; } @@ -594,8 +590,8 @@ static MemTxResult astro_chip_read_with_attrs(void *opaque, hwaddr addr, #undef EMPTY_PORT default: - trace_astro_chip_read(addr, size, val); - g_assert_not_reached(); + val = 0; + ret = MEMTX_DECODE_ERROR; } /* for 32-bit accesses mask return value */ @@ -610,6 +606,7 @@ static MemTxResult astro_chip_write_with_attrs(void *opaque, hwaddr addr, uint64_t val, unsigned size, MemTxAttrs attrs) { + MemTxResult ret = MEMTX_OK; AstroState *s = opaque; trace_astro_chip_write(addr, size, val); @@ -686,11 +683,9 @@ static MemTxResult astro_chip_write_with_attrs(void *opaque, hwaddr addr, #undef EMPTY_PORT default: - /* Controlled by astro_chip_mem_valid above. */ - trace_astro_chip_write(addr, size, val); - g_assert_not_reached(); + ret = MEMTX_DECODE_ERROR; } - return MEMTX_OK; + return ret; } static const MemoryRegionOps astro_chip_ops = { |