What are the ESI registers?
In addition to the registers being used for mass operations, they are useful for their property of being preserved through a function call (call-preserved) in 32-bit calling convention. The ESI, EDI, EBX, EBP, ESP are call-preserved whereas EAX, ECX and EDX are not call-preserved.
What are the 32-bit registers?
General-Purpose Registers. The EAX, EDX, ECX, EBX, EBP, EDI, and ESI registers are 32-bit general-purpose registers, used for temporary data storage and memory access. The AX, DX, CX, BX, BP, DI, and SI registers are 16-bit equivalents of the above, they represent the low-order 16 bits of 32-bit registers.
What is the ESP register?
The ESP register is the stack pointer for the system stack. It is rarely changed directly by a program but is changed when data is pushed onto the stack or popped from the stack. One use for the stack is in procedure calls. the address of the instructions following the procedure call instruction is stored on the stack.
What are ESI and EDI?
•ESI and EDI are general purpose registers. If a variable is to have register storage class, it is. often stored in either ESI or EDI. A few instructions use ESI and EDI as pointers to source and. destination addresses when copying a block of data.
What documents are required for ESIC registration?
Following Documents required for Employees’ State Insurance Corporation (ESI) Registration
- Copy of pan of company/partnership/firm.
- Copy of Certificate of Incorporation / Registration certificate.
- Copy of Bank Statement.
- Copy of all licenses issued in the name of establishment.
- A cancelled cheque.
- Copy of electricity Bill.
What is the difference between EAX and ax?
eax is the 32-bit, “int” size register. ax is the 16-bit, “short” size register. It was added in 1979 with the 8086 CPU, but is used in DOS or BIOS code to this day. al and ah are the 8-bit, “char” size registers.
What is ESP register used for?
The ESP register serves as an indirect memory operand pointing to the top of the stack at any time. As program adds data to the stack, the stack grows downward from high memory to low memory. When items removed from the stack, stack shrinks upward from low to high memory.
Are you eligible for ESIC form?
To be eligible for the ESI scheme, the employee or the worker’s monthly salary should not exceed Rs. 21,000 and Rs. 25,000 for people with disability. An interest of 12% is charged per annum for each day of non-payment of the workers or employees contribution.
Is ESIC registration mandatory?
Is it mandatory for the Employer to register under the scheme? Yes, it is the statutory responsibility of the employer under Section 2A of the Act read with Regulation 10-B, to register their Factory/ Establishment under the ESI Act within 15 days from the date of its applicability to them.
Why are ESI and Edi registers used in Assembly?
Jeff Duntemann in his assembly language book has an example assembly code for printing the command line arguments. The code uses esi and edi to store counters as they will be unchanged by the C library function printf. For other registers like eax, ecx, edx, there is no guarantee of them not being used by the C library functions.
Which is the base for the ESP register?
Other addressing modes (without ESP/EBP as the base) default to the DS segment. (absolute, DI, SI, and/or BX in 16-bit mode, and in 32-bit addressing modes any register can be a base in an addressing mode). The ESP register is the stack pointer for the system stack.
What’s the difference between EBP and ESI?
It is similar to esi, except that it is generally used as a destination for data. ebp is a non-volatile general-purpose register that has two distinct uses depending on compile settings: it is either the frame pointer or a general purpose register.
Is the EDI Register the same as the di Register?
The first 16 bits of the EDI register can be accessed as the DI register. ESI, EBP and ESP work in the same way, but note there is no further sub division of 16 bit register in the case of these particular registers. To make their programs run as fast as possible assembler programmers use the registers as much as they can.