英飞凌TriCore TC1.6 汇编指令手册

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"英飞凌Tc系列，特别是TC1.6P和TC1.6E型号的32位微控制器，其内置的32位统一处理器核心——TriCore® TC1.6，拥有特定的汇编指令集。为了实现高效的编程和优化代码执行速度，深入理解编译器原理并掌握内核汇编指令是必要的。" 本文档《TriCore® TC1.6P&TC1.6E Instruction Set》是2013年7月版的用户手册，由英飞凌科技股份公司发布，提供了关于如何使用TC1.6内核汇编指令的详细指导。该手册涵盖了32位微控制器的核心特性和功能，旨在帮助开发者充分利用英飞凌的TriCore架构进行低级编程。在汇编语言编程中，了解特定的指令集至关重要，因为这直接影响到程序的性能和效率。TriCore TC1.6的汇编指令集可能包括数据处理、转移指令、控制流指令、算术运算、逻辑运算、浮点运算等多种指令，每种指令都有其特定的功能和用法。例如，数据处理指令可能用于加载、存储和操作寄存器中的数据，而控制流指令则用于控制程序的流程，如跳转、循环等。在编写优化的代码时，开发者需要考虑指令的执行时间和资源占用，合理地安排指令序列以减少不必要的计算和内存访问，提高执行效率。此外，理解和应用编译器原理可以帮助开发者写出更利于编译器优化的代码，例如通过适当使用内联汇编，或者理解编译器的优化策略来避免潜在的性能瓶颈。英飞凌明确声明，文档提供的所有信息不构成任何条件或特性的保证，且对于因使用设备而产生的知识产权侵权或其他任何类型的保证和责任，英飞隆不承担责任。因此，开发者在实际应用这些技术时，应自行评估风险，并可能需要联系英飞凌获取更具体的技术支持、交付条款以及价格信息。需要注意的是，由于技术要求，英飞凌的组件可能含有有害物质。关于具体涉及的类型，建议联系最近的英飞凌办事处获取详细信息。总体来说，熟悉和精通TriCore TC1.6的汇编指令集是开发高效嵌入式系统的关键，这不仅涉及到对指令本身的了解，还包括对编译器工作原理的深入理解，以及对潜在风险的充分认识。

TriCore

TC1.6P & TC1.6E

32-bit Unified Processor Core

Instruction Set Information

V1.0 2013-07

User Manual (Volume 2) 1-9

1.3.2 Cache RTL Functions

CACHE[ ] is a syntactic structure which hides the implementation characteristics of the cache implemented.

CACHE can be associatively accessed either by:

• A single argument which is an address.

• Two arguments consisting of implementation defined ranges for set_index and set_element.

In either case the CACHE[ ] access returns a structure with:

• Boolean validity information (CACHE[ ].valid).

• Boolean data modification information (CACHE[ ].modified).

• Physical address of the copied location (CACHE[ ].physical_address).

• Stored data associated with the address (CACHE[ ].data).

The cache function descriptions are given in the following table.

Notes

1. ‘cacheline’, which appears in the cache function descriptions, is the size of the cache line in bytes and is

implementation dependent.

2. ‘index’ and ‘elem’, which appear in the cache function descriptions, are the set_index and set_element values.

These values are implementation dependent.

Table 1-10 Cache Functions

Function Definition

cache_address_ivld(EA) if (CACHE[EA].valid==1) then CACHE [EA].valid=0;

cache_address_wb(EA) if ((CACHE[EA].valid==1) AND (CACHE[EA].modified==1)) then {

pa = CACHE[EA].physical_address;

M[pa,cacheline] = CACHE[EA].data;

CACHE[EA].modified = 0;

}

cache_address_wi(EA) if (CACHE[EA].valid==1) then {

if (CACHE[EA].modified==1) then {

pa = CACHE[EA].physical_address;

M[pa,cacheline] = CACHE[EA].data;

}

CACHE[EA].modified = 0;

CACHE[EA].valid = 0;

}

cache_index_ivld if (CACHE[index,elem].valid = = 1) then CACHE[index,elem].valid = 0;

cache_index_wb if ((CACHE[index,elem].valid==1) AND (CACHE[index,elem].modified==1))

then {

pa = CACHE[index,elem].physical_address;

M[pa,cacheline] = CACHE[index,elem].data;

CACHE[index,elem].modified = 0;

}

TriCore

TC1.6P & TC1.6E

32-bit Unified Processor Core

Instruction Set Information

V1.0 2013-07

User Manual (Volume 2) 1-11

1.3.3 Floating Point Operation Syntax

The following table defines the floating point operation syntax.

Table 1-11 Floating Point Operation Syntax

Syntax Definition

ADD_NAN 7FC00001

MUL_NAN 7FC00002

SQRT_NAN 7FC00004

DIV_NAN 7FC00008

POS_INFINITY 7F800000

NEG_INFINITY FF800000

is_s_nan(x) Takes the IEEE-754-1985 32-bit single precision floating point format value ‘x’

and returns the boolean result of the expression:

(x[30:23] == 8'b11111111) AND (x[22] == 1’b0) AND (x[21:0] != 0);

is_q_nan(x) Takes the IEEE-754-1985 32-bit single precision floating point format value ‘x’

and returns the boolean result of the expression:

(x[30:23] == 8’b11111111) AND (x[22] == 1’b1);

is_nan(x) Takes the IEEE-754-1985 32-bit single precision floating point format value ‘x’

and returns the boolean result of the expression: (is_s_nan(x) OR

is_q_nan(x));

is_pos_inf(x) Takes the IEEE-754-1985 32-bit single precision floating point format value ‘x’

and returns the boolean result of the expression:

(x[31:0] == POS_INFINITY);

is_neg_inf(x) Takes the IEEE-754-1985 32-bit single precision floating point format value ‘x’

and returns the boolean result of the expression:

(x[31:0] == NEG_INFINITY);

is_inf(x) Takes the IEEE-754-1985 32-bit single precision floating point format value ‘x’

and returns the boolean result of the expression: (is_neg_inf(x) OR

is_pos_inf(x));

is_zero(x) Takes the IEEE-754-1985 32-bit single precision floating point format value ‘x’

and returns the boolean result of the expression: (x[30:0] == 0);

is_denorm(x) Takes the IEEE-754-1985 32-bit single precision floating point format value ‘x’

and returns the boolean result of the expression: (x[30:23] == 0) AND (x[22:0]

!= 0);

denorm_to_zero(x) If the IEEE-754-1985 32-bit single precision floating point format value ‘x’ is a

denormal value return the appropriately signed infinitely accurate real value 0.

Otherwise return ‘x’ as an infinitely accurate real value; i.e.

if((x < 0) AND (x > -2-126)) then return -0.0;

else if((x > 0) AND (x < 2126)) then return +0.0;

else return f_real(x);

round_to_integer(x,y) Returns a signed integer result of infinite width by rounding the IEEE-754-1985

32-bit single precision floating point format value ‘x’ to an integer value using

the IEEE-754-1985 mode specified by ‘y’.

round_to_unsigned(x,y) Returns an unsigned integer result of infinite width by rounding the IEEEV 32-

bit single precision floating point format value ‘x’ to an integer value using the

IEEE-754-1985 mode specified by ‘y’.

TriCore

TC1.6P & TC1.6E

32-bit Unified Processor Core

Instruction Set Information

V1.0 2013-07

User Manual (Volume 2) 1-12

round_to_q31(x,y) Returns a Q format result of infinite width by rounding the real value ‘x’ to a Q

format value using the IEEE-754-1985 mode specified by ‘y’.

i_real(x) Returns a infinitely accurate real number of equal value to the 32-bit signed

integer value ‘x’.

u_real(x) Returns a infinitely accurate real number of equal value to the 32-bit unsigned

integer value ‘x’.

f_real(x) Returns the IEEE-754-1985 32-bit single precision floating point format value

‘x’ as an infinitely accurate real value.

q_real(x) Returns the Q31 format value ‘x’ as an infinitely accurate real value.

add(x,y) Adds the real value ‘x’ to the real value ‘y’ and returns an infinitely accurate real

result.

mul(x,y) Multiply the real value ‘x’ by the real value ‘y’ and return an infinitely accurate

real result.

divide(x,y) Divides the real value ‘x’ by the real value ‘y’ and returns an infinitely accurate

real result.

ieee754_round(x,y) Rounds the real value ‘x’ using the type of rounding specified by ‘y’ compliant

with IEEE-754-1985.

ieee754_32bit_format(x) Returns the real value ‘x’ in the standard 32-bit single precision IEEE-754-

1985 floating point format. ‘x’ is converted to the correct IEEE-754-1985 result

on overflow or underflow.

ieee754_lt(x,y) Returns TRUE if ‘x’ is less than ‘y’ according to the IEEE-754-1985 rules for

32-bit single precision floating point numbers otherwise returns FALSE.

ieee754_gt(x,y) Returns TRUE if ‘x’ is greater than ‘y’ according to the IEEE-754-1985 rules for

32-bit single precision floating point numbers otherwise returns FALSE.

ieee754_eq(x,y) Returns TRUE if ‘x’ is equal to ‘y’ according to the IEEE-754-1985 rules for 32-

bit single precision floating point numbers otherwise returns FALSE.

fp_abs(x) Returns the infinitely accurate absolute value of the real value ‘x’; i.e. (x < 0.0)

? (0.0 - x) : x;

approx_inv_sqrt(x) Takes the real argument x and returns the approximate inverse square root (x

0.5

) to at least 6.75 bits of precision.

Table 1-11 Floating Point Operation Syntax

Syntax Definition

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