84 lines
2.4 KiB
Diff
84 lines
2.4 KiB
Diff
From 8a88b86cc9a3ad0bb6da52fb0f938fe5a085c027 Mon Sep 17 00:00:00 2001
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From: Ulrich Hecht <uli@suse.de>
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Date: Tue, 14 Apr 2009 16:20:50 +0200
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Subject: [PATCH 03/17] qemu-cvs-alsa_bitfield
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Implements TYPE_INTBITFIELD partially. (required for ALSA support)
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Signed-off-by: Ulrich Hecht <uli@suse.de>
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---
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thunk.c | 21 +++++++++++++++++++++
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thunk.h | 3 +++
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2 files changed, 24 insertions(+), 0 deletions(-)
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diff --git a/thunk.c b/thunk.c
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index 0657188..5638b2c 100644
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--- a/thunk.c
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+++ b/thunk.c
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@@ -41,6 +41,7 @@ static inline const argtype *thunk_type_next(const argtype *type_ptr)
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case TYPE_CHAR:
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case TYPE_SHORT:
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case TYPE_INT:
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+ case TYPE_INTBITFIELD:
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case TYPE_LONGLONG:
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case TYPE_ULONGLONG:
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case TYPE_LONG:
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@@ -139,6 +140,26 @@ const argtype *thunk_convert(void *dst, const void *src,
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case TYPE_INT:
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*(uint32_t *)dst = tswap32(*(uint32_t *)src);
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break;
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+ case TYPE_INTBITFIELD:
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+#if defined(TARGET_I386) && defined(__powerpc__)
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+ /* powerpc uses the MSB, whereas i386 uses the LSB
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+ * to store the first bit in a field */
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+ {
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+ unsigned char byte = *(uint8_t *)src;
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+ *(uint8_t *)dst = ((byte >> 7) & 1)
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+ | ((byte >> 5) & 2)
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+ | ((byte >> 3) & 4)
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+ | ((byte >> 1) & 8)
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+ | ((byte << 1) & 16)
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+ | ((byte << 3) & 32)
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+ | ((byte << 5) & 64)
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+ | ((byte << 7) & 128);
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+ /* FIXME: implement for bitfields > 1 byte and other archs */
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+ }
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+#else
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+ *(uint32_t *)dst = tswap32(*(uint32_t *)src);
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+#endif
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+ break;
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case TYPE_LONGLONG:
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case TYPE_ULONGLONG:
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*(uint64_t *)dst = tswap64(*(uint64_t *)src);
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diff --git a/thunk.h b/thunk.h
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index 109c541..55890f3 100644
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--- a/thunk.h
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+++ b/thunk.h
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@@ -37,6 +37,7 @@ typedef enum argtype {
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TYPE_PTR,
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TYPE_ARRAY,
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TYPE_STRUCT,
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+ TYPE_INTBITFIELD,
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} argtype;
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#define MK_PTR(type) TYPE_PTR, type
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@@ -90,6 +91,7 @@ static inline int thunk_type_size(const argtype *type_ptr, int is_host)
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case TYPE_SHORT:
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return 2;
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case TYPE_INT:
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+ case TYPE_INTBITFIELD:
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return 4;
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case TYPE_LONGLONG:
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case TYPE_ULONGLONG:
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@@ -127,6 +129,7 @@ static inline int thunk_type_align(const argtype *type_ptr, int is_host)
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case TYPE_SHORT:
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return 2;
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case TYPE_INT:
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+ case TYPE_INTBITFIELD:
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return 4;
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case TYPE_LONGLONG:
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case TYPE_ULONGLONG:
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--
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1.7.1
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