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Return new UC_ERR_OVERFLOW instead of UC_ERR_NOMEM when reg buffer is too small

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This commit is contained in:
Robert Xiao
2023-06-16 14:47:03 -07:00
parent b041345a73
commit 2b80ab425b
3 changed files with 16 additions and 9 deletions
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21
include/unicorn/unicorn.h
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@@ -192,6 +192,7 @@ typedef enum uc_err {
UC_ERR_HOOK_EXIST, // hook for this event already existed
UC_ERR_RESOURCE, // Insufficient resource: uc_emu_start()
UC_ERR_EXCEPTION, // Unhandled CPU exception
UC_ERR_OVERFLOW, // Provided buffer is not large enough: uc_reg_*2()
} uc_err;
/*
@@ -807,7 +808,7 @@ uc_err uc_reg_read(uc_engine *uc, int regid, void *value);
@size: size of value being written; on return, size of value written
@return UC_ERR_OK on success; UC_ERR_ARG if register number or value is
invalid; UC_ERR_NOMEM if value is not large enough.
invalid; UC_ERR_OVERFLOW if value is not large enough for the register.
*/
UNICORN_EXPORT
uc_err uc_reg_write2(uc_engine *uc, int regid, const void *value, size_t *size);
@@ -821,7 +822,7 @@ uc_err uc_reg_write2(uc_engine *uc, int regid, const void *value, size_t *size);
@size: size of value buffer; on return, size of value read
@return UC_ERR_OK on success; UC_ERR_ARG if register number or value is
invalid; UC_ERR_NOMEM if value is not large enough.
invalid; UC_ERR_OVERFLOW if value is not large enough to hold the register.
*/
UNICORN_EXPORT
uc_err uc_reg_read2(uc_engine *uc, int regid, void *value, size_t *size);
@@ -865,7 +866,8 @@ uc_err uc_reg_read_batch(uc_engine *uc, int *regs, void **vals, int count);
@count: length of *regs, *vals and *sizes
@return UC_ERR_OK on success; UC_ERR_ARG if some register number or value is
invalid; UC_ERR_NOMEM if some value is not large enough.
invalid; UC_ERR_OVERFLOW if some value is not large enough for the
corresponding register.
*/
UNICORN_EXPORT
uc_err uc_reg_write_batch2(uc_engine *uc, int *regs, const void *const *vals,
@@ -882,7 +884,8 @@ uc_err uc_reg_write_batch2(uc_engine *uc, int *regs, const void *const *vals,
@count: length of *regs, *vals and *sizes
@return UC_ERR_OK on success; UC_ERR_ARG if some register number or value is
invalid; UC_ERR_NOMEM if some value is not large enough.
invalid; UC_ERR_OVERFLOW if some value is not large enough to hold the
corresponding register.
*/
UNICORN_EXPORT
uc_err uc_reg_read_batch2(uc_engine *uc, int *regs, void *const *vals,
@@ -1218,7 +1221,7 @@ uc_err uc_context_reg_read(uc_context *ctx, int regid, void *value);
@size: size of value being written; on return, size of value written
@return UC_ERR_OK on success; UC_ERR_ARG if register number or value is
invalid; UC_ERR_NOMEM if value is not large enough.
invalid; UC_ERR_OVERFLOW if value is not large enough for the register.
*/
UNICORN_EXPORT
uc_err uc_context_reg_write2(uc_context *ctx, int regid, const void *value,
@@ -1233,7 +1236,7 @@ uc_err uc_context_reg_write2(uc_context *ctx, int regid, const void *value,
@size: size of value buffer; on return, size of value read
@return UC_ERR_OK on success; UC_ERR_ARG if register number or value is
invalid; UC_ERR_NOMEM if value is not large enough.
invalid; UC_ERR_OVERFLOW if value is not large enough to hold the register.
*/
UNICORN_EXPORT
uc_err uc_context_reg_read2(uc_context *ctx, int regid, void *value,
@@ -1279,7 +1282,8 @@ uc_err uc_context_reg_read_batch(uc_context *ctx, int *regs, void **vals,
@count: length of *regs, *vals and *sizes
@return UC_ERR_OK on success; UC_ERR_ARG if some register number or value is
invalid; UC_ERR_NOMEM if some value is not large enough.
invalid; UC_ERR_OVERFLOW if some value is not large enough for the
corresponding register.
*/
UNICORN_EXPORT
uc_err uc_context_reg_write_batch2(uc_context *ctx, int *regs,
@@ -1297,7 +1301,8 @@ uc_err uc_context_reg_write_batch2(uc_context *ctx, int *regs,
@count: length of *regs, *vals and *sizes
@return UC_ERR_OK on success; UC_ERR_ARG if some register number or value is
invalid; UC_ERR_NOMEM if some value is not large enough.
invalid; UC_ERR_OVERFLOW if some value is not large enough to hold the
corresponding register.
*/
UNICORN_EXPORT
uc_err uc_context_reg_read_batch2(uc_context *ctx, int *regs, void *const *vals,